Display apparatus

Abstract

A display apparatus is removably attachable to the filler gun of a fuel pump, where the filler gun includes in series connection, a gun nozzle having a forward discharge end, and a rear end, a gun head having both a forward end portion which connects with the rear end of the gun nozzle; and a rearward handle portion whose forward end connects to the rear of the gun nozzle and a rearward handle portion whose forward end connects to the rear end of the gun head. The display apparatus includes a carrying body adapted to fit onto the filler gun and to extend from approximately a first junction between the rear end of the gun nozzle and the forward end of the gun head to approximately a second junction between the rear end of the gun head and the forward end of the handle. The carrying body has an upper surface defining an elongate display surface for messages, and includes a first member and a second member where there are various techniques for releasably interconnecting the first and second members. The first and second members are shaped to generally conform, when interconnected, to enclose the sides, bottom, and upper portions of the gun head, and through various techniques pivotally connect to the upper surface of the carrying body for supporting a replaceable message card placed on the display surface.

Description

FIELD OF THE INVENTION

The present invention relates to a display apparatus removably attachable to the filler gun of a fuel pump. The filler gun includes, in series connection, a nozzle having a forward discharge end and a rear end, a gun head having both a forward end portion which connects with the rear end of the gun nozzle and a rearward handle portion whose forward end connects to the rear end of the gun head. The display apparatus comprises a carrying body adapted to be fitted onto the filler gun and to extend from approximately a first junction between the rear end of the gun nozzle and the forward end of the gun head to approximately a second junction between the rear end of the gun head and a forward end of the handle. The carrying body has an upper surface defining an elongate display surface for messages. The display apparatus is also useful on a filler gun having the gun head covered by a protective boot of rubber or plastic material.

BACKGROUND OF THE INVENTION

The prior art discloses a carrying body of the above mentioned type with the carrying body being shaped like a boot and having a rear end which is fully open for entry through the filler gun nozzle and the gun head, and a front end with a substantially smaller opening through which the filler gun nozzle extends when the carrying body is fitted onto the filler gun. A carrying body of such prior art type has an upper surface which effectively covers only the upper region of the gun head in order to define the elongate display surface for messages. Such carrying bodies are suitable for use in countries having only a very limited number of filler gun types, such as, for example, in Norway, Denmark, Germany and Sweden. However, in other areas of the world, the number of differently designed filler guns may be substantially higher. In the United States of America, for example, the number of differently shaped filler guns is in excess of ten. Such a large number of different types of filler guns requires a large number of differently made carrying bodies. In practice, it is difficult to obtain the same display surface area and configuration for each carrying body type. Also, some filler guns are so designed that they are difficult to design so as to be easily fitted and removed from a carrying body.

It is highly desirable to have a carrying body which is easily attachable to the filler gun even by an inexperienced person, and also to have a carrying body which is easily removable from the filler gun when maintenance is to be carried out on the filler gun, e.g. repair of the fuel valve within the filler gun head.

Most filler guns are known to have the gun head covered by a protective boot of rubber or plastic material, both for protecting the gun head against damage and to prevent a bare gun head from making scratches on a car's paint work. Removing such protective boot from a filler gun in order to mount a carrying body according to the present invention is both time consuming, resulting in a waste of the boot material, and causes the gun head to be less protected. The present invention therefore also includes the feature of being able to be fitted onto a filler gun without having to remove such protective boot.

According to a first embodiment of the present invention, the carrying body comprises a first member and a second member and means for releasably interconnecting the first and second members, the first and second members being shaped to generally conform, when so interconnected, to enclose the side, bottom, and upper portions of the gun head, and means pivotally connected to a top surface of the carrying body for supporting a replaceable message card placed on the display surface of the first member.

According to another embodiment of the present display apparatus, the carrying body comprises a lower member and an upper member releasably engageable with the lower member, the lower member having two side panels, a bottom element and means connecting the side panels with the bottom element. The lower member, when the two side panels and the bottom element are brought to lie against the gun head substantially fitting around a lower part of the gun head. The side panels have at their top region a first interlocking means, the upper member being formed as a cap-like member to fit over an upper part of the gun head, and having a second interlocking means for releasably engaging the first interlocking means on the lower member, and a top member releasably engageable with the upper member. The top member has means for releasable engagement with the upper member, space being provided between an upper surface of the upper member and a portion of the top member for locating a replaceable message card when the top member and the upper member engage.

When the filler gun head is of the type already covered by a protective boot of rubber of plastic material, the carrying body can be fitted on the filler gun without having to remove the protective boot.

In a further embodiment of the display apparatus, the carrying body comprises a lower member and an upper member releasably engageable with the lower member, and further a top member which is releasably engageable with the upper member. The top member has a curved configuration along its length.

According to a further embodiment of the display apparatus, the carrying body may comprise a lower member, an upper member releasably engageable with the lower member, the lower member having two side panels, a bottom element, and means connecting the side panels with the bottom element. The lower member, when the two side panels and the bottom element are brought to lie against the gun head, substantially surrounding a lower part of the gun head. The side panels have at their top regions a first interlocking means, and the upper member is formed as a cap like means to fit over an upper part of the gun head, and has a second interlocking means for releasable engaging the first interlocking means onto the lower member. The upper member may have an upper (top) surface for locating a replaceable message card, the upper surface having along at least a portion of its peripheral edge an upwardly extending rim and means protruding up from the upper (top) surface for releasably engaging holes in the message card. This latter embodiment is also useful on a filler gun which has its gun head covered by a protective boot, because there is no need to remove the protective boot before fitting the carrying body to the filler gun.

It is also possible to provide a carrying body comprising a lower member, and an upper member releasably engageable with the lower member, the upper member having a top surface with a curved configuration along its length.

Although, in a preferred embodiment of the present invention, the two side panels are brought towards each other to lie against opposite sides of the gun head, it is possible, with a choice of suitable material for the lower member, to have the two side panels integrally joined at a front region thereof. Such a variant may be useful in order to provide typical male/female elements for matching and joining front region edges of the two side panels.

Contrary to the prior art carrying body, the carrying body of the present invention is made of a substantially hard plastic material e.g. polyamide. The pivotally connected member or top member is also suitably made of a substantially hard plastic material, e.g. polycarbonate.

If the carrying body is provided with a pivotally connected top member, such member can be a lid with a transparent face portion for viewing a message therethrough, or a frame with an open space between opposite sides of the frame. In the case of a frame, the frame can be made of a transparent or non-transparent material, for example, polycarbonate, and the color thereof can therefore be of the same color as that of the carrying body or a color forming a typical contrast to the color of the carrying body. Also, such frame can have a portion carrying information related to the type of fuel supplied from the gun.

These, and further, embodiments of the display apparatus according to the present invention will appear from the description below with reference to the attached drawing figures, as well as the attached patent claims.

The present invention is now to be described with reference to the attached drawing figures illustrating preferred, but non-limitative embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 and 2 illustrate fitting of a lower member of the carrying body of the present invention onto a filler gun head;

FIG. 3 illustrates fitting of an upper member of the carrying body onto the filler gun head through engagement with the lower member;

FIG. 4 further illustrates mounting of the upper member onto the filler gun and with pivotable engagement of a top member with the upper member;

FIG. 5 shows a carrying body with the top member fully installed on the filler gun;

FIG. 6 is a side view of the upper member of the carrying body, according to the present invention;

FIG. 7 is a bottom view of the upper member of the carrying body, according to the present invention;

FIGS. 8, 9, 10, 11 and 12 are sectional views VIII, IX, X, XI and XII of FIG. 7;

FIG. 13 is a top plan view of a top member of the display apparatus, according to the invention;

FIG. 14 is section XIV--XIV of FIG. 13;

FIG. 15 is a cross section through the display apparatus with the top member of FIG. 13 and installed on a filler gun;

FIG. 16 is a top plan view of a modified top member of the display apparatus formed as an open frame;

FIG. 17 is section XVII--XVII of FIG. 16;

FIG. 18 is a cross-section of the display apparatus, according to the present invention fitted onto a filler gun and with a top member according to FIG. 16;

FIG. 19 shows a top plan view of a modification of the top member of FIG. 16;

FIG. 20 is a cross-section XX--XX of FIG. 19;

FIG. 21 illustrates in a perspective view the display apparatus installed on a fuel gun with a top member according to FIG. 16;

FIG. 22 shows in perspective view a display apparatus according to the present invention installed on a filler gun and with a top member according to FIG. 19;

FIG. 23 shows a further embodiment of an upper member of the carrying body of the display apparatus according to the present invention, with an integral frame structure at the top surface of the upper member;

FIG. 24 is cross-section XXIV--XXIV of FIG. 23;

FIGS. 25, 26 and 27 are side view, top view and perspective view, respectively, of a further modified upper member of the carrying body;

FIG. 28 is cross-section XXVII--XXVII of FIG. 27;

FIG. 29 is an enlarged view XXIX of FIG. 28;

FIG. 30 is a side view of a filler gun with a two-part carrying body fitted thereon and with a pivotally connected top member fitted onto the carrying body;

FIG. 31 is a side view of a filler gun with a two-part carrying body fitted thereon, and with a top member engageable with an upper part of the carrying body;

FIG. 32 is a side view of a filler gun with a two-part carrying body fitted thereon, and in accordance with the embodiments shown in FIGS. 23, 24 and 25-29;

FIGS. 33-35 illustrate fitting of the lower member of the carrying body onto the filler gun when the lower member at its front end region has its side panels integrally joined; and

FIG. 36 illustrates a further modification of the two piece carrying body, and the top member.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)

FIGS. 1 and 2 show a filler gun 1 of a fuel pump. The filler gun includes a fuel gun nozzle 2 for discharging fuel at its front end and a gun head 3 having internally located fuel valve means (not shown). The valve outlet means communicates with the nozzle 2 and a valve inlet means (not shown) communicates with fuel supply means connected to a fuel hose 4, the fuel supply means extending through a handle 5 of the gun. The handle 5 has lever means 6 which are operatively connected to the valve means. The gun head 3 may be of an unprotected type, or may be covered by a protective boot of rubber or plastic material as indicated by reference number 3'.

As shown in FIGS. 4 and 5, the filler gun is provided with a display apparatus, generally denoted by reference number 70. Such display apparatus is intended for supporting on its upper surface 8 a message card 9 for displaying a graphic message readily viewable by a filler gun user.

As clearly shown in FIGS. 4 and 5, the carrying body 7 for the graphic message is adapted to fit over the filler gun to extend from approximately the junction "a" of the gun nozzle 2 with the gun head 3 to approximately the junction "b" of the gun head 3 with a forward end of the handle 5. The display surface 8 for the graphic message, when the carrying body 7 is attached to the filler gun, extends longitudinally along the filler gun from approximately the junction "a" of the gun head 3 with the nozzle 2 to approximately the junction "b" of the gun head with a forward end of the handle of the gun.

As clearly seen from FIGS. 1-5, the carrying body 7 comprises a lower member 10 and an upper member 11 releasably engageable with the lower member 10. The lower member 10 has two side panels 12, 13, a bottom element 14, and means 15, such as film hinges or other transition means, integrally connecting side panels 12, 13 with the bottom element 14. As shown in FIG. 2, the lower member 10 with its side panels 12, 13 and bottom element 14 are brought to lie against the gun head 3, substantially fitting around a lower part of the gun head. At the top region of the side panels there are first interlocking means 16, 17 and 18, 19 on the respective panels 12 and 13. The first interlocking means 16-19 are suitably formed as male elements in the form of snap hooks.

As seen from FIGS. 3 and 4, the upper member 11 is formed as cap-like means to fit over an upper part of the gun head 3. The upper member 11 has second interlocking means 20, 21 and 22, 23 for releasably engaging the first interlocking means 16, 17 and 18, 19, respectively, on the lower member. The second interlocking means are formed as female elements having means, e.g. in the form of a ledge or set-off 20', 21', 22', 23' as indicated more closely in FIGS. 7, 8 and 10. FIG. 1 shows that the panels 12, 13, the bottom element 14, the connecting means 15, and the first interlocking means 16-19 are formed as an integrally made structure, e.g. through an injection molding process.

As seen from FIG. 6, the upper member 11 has an upper peripheral portion 11' with a bead 11" extending along the upper peripheral portion 11' for releasably engaging a peripheral skirt portion of a top member located on the upper member 11, as will be explained further with reference to FIGS. 13-15.

At a forward end of the upper member, there is provided a first hinge means 24 in the form of a protruding member having a transverse hole 24'.

As illustrated in FIGS. 1 and 2, side panels 12, 13 may be provided with a plurality of integrally made studs 25 which both compensate for any tolerances in the space between the panels 12, 13 and the gun head 3 as well as being able to penetrate partly into any protective boot provided on the gun head. Thus, when fitted around the gun head 3, the lower member 10 may obtain an improved contact with the gun head 3.

Similarly, as indicated in FIGS. 8-11, the upper member 11 may have similar or technically equivalent space compensating studs, generally denoted by reference number 26. The studs should be so dimensioned that they will easily yield and/or penetrate into the soft protective boot covering the gun head if so provided.

FIG. 12 discloses that the top face 11'" of the upper member 11 has a curved configuration along its length. In a first embodiment, the top member shown in FIG. 4 and also in FIG. 13, is labelled with reference number 27 and is formed as a lid with a transparent face portion 27' for viewing a message on the message card 9. The top member 27 has means in the form of thickened portions 28 on a peripheral skirt portion 29 depending from the transparent face portion 27' designed to engage the bead 11' on the upper member 11. Space is provided between an upper surface of the upper member 11 and a portion of the top member 27 in order that the replaceable message card 9 can be located in such space when the top member 27 and the upper member 11 engage, as illustrated in FIG. 15. FIG. 15 shows how the lower member 10, with its side panels 12, 13 and the first interlocking means 16, 18, is capable of snap locking to the upper member 11.

The top member 27 is suitably provided with a second hinge means 30 engageable with the first hinge means 24 on the upper member 11 for pivotable attachment of the top member 27 to the upper member 11. The second hinge means has a protrusion integral with a pin 31, having a slit 32 and a thickened end 33.

FIGS. 16-20 will now be explained with regard to the differences from what is shown and described in connection with FIGS. 13-15. Instead of the top member 27 being formed as a lid, the embodiment of FIG. 16 shows a top member 34 formed as a frame with open space 35 between opposite sides of the frame. The frame has a first element 34' for laying over a marginal edge portion of a top surface of the upper member 11, as clearly illustrated in FIG. 18, and a second element 34" integral with the first element 34' for releasably engaging upper, peripheral portion of the upper member 11. As similarly shown in FIG. 13, the second element may be provided with second portions 36 for releasable engagement with upper peripheral portion of the upper member. Similarly to that shown in FIGS. 13 and 14, the top member according to FIG. 16 is provided with a second hinge means 30.

The top member of FIG. 16 can be made of a transparent material. Alternatively, it can be made of a non-transparent material, e.g. of a color that is the same as that of the upper member 11 or a color forming a suitable contrast with the color of member 11.

FIG. 19 is a slight modification of the embodiment of FIG. 16, in that a rear end of the top member has a widened portion, as seen in the longitudinal direction of the top member. The widened portion of the frame is labelled with reference number 37 and is in reality a widened portion of the first element 34' as shown and described in connection with FIGS. 16 and 17. The widened portion 37 of the frame is suitable for carrying information related to type of fuel supplied from the gun, e.g. "PREMIUM."

FIG. 21 is a perspective view of the embodiment according to FIGS. 16-18, and FIG. 22 is a perspective view of the embodiment according to FIGS. 19 and 20.

FIG. 13 with reference to FIGS. 6 and 7, shows the second hinge means being in the form of the male member 31 which is capable of releasable snap engagement with the female member 24 of the hinge connection between the upper member 11 and its top member, e.g. 27 as shown in FIGS. 13 or 34 as shown in FIG. 16, or the modified version of the top member 34 shown in FIG. 19.

A modified version of the upper member 11 is shown in FIGS. 23 and 24, the modified upper member being denoted by reference number 38. The upper member 38 has along its peripheral outline a frame member 39 formed with open space 40 between opposite sides of the frame 39. The frame has a first element 39' located over a marginal top edge portion of the upper surface of the upper member 38, and a second element 39" integral with the first element 39'. The second element is preferably integral with the upper surface of the upper member, e.g. by welding or through the use of suitable adhesive. In order to properly locate the frame 39 onto the upper member 38, e.g. during welding or other operation for joining the two male/female members, means denoted by reference numeral 41 may be provided on the frame 39 and the upper member 38, respectively.

To provide insertion of a message card 9 in the space between the upper surface of the upper member 38 and the first element 39' of frame 39 a slot 42 may be provided as shown e.g. by dotted lines on FIG. 23, the slot being provided suitably in the second element 39" of the frame 39. Alternatively, the first element 39' of the frame 39 may have a removed section 43 to facilitate easy insertion and removal of the message card 9.

An additional modification of the upper member 11 is shown and described with reference to FIGS. 25-29. In this embodiment, the upper member is labelled with reference numeral 44. It has a top surface 44' and, along at least a portion of the peripheral edge of the top surface, an upwardly extending rim 45. The rim is suitably only a few millimeters high, maybe even less. Means in the form of studs 46 protrude upwardly from the surface 44', the protruding means 46 having a substantially arrow-shaped configuration, a straight upright portion thereof having a height substantially equal to the thickness "d" of the message card 9.

When the message card 9 is positioned inside the inner circumference of the rim 45, as indicated on FIG. 27, holes 47 provided in the message card 9 are brought into snap-like engagement with the arrow-shaped studs 46. Thus, the message card 9 is held suitably in place on the upper member 44. To provide for drainage of any rain water when the gun is located on the fuel pump between filling operations, the rim 45 is suitably provided with an opening 45' as indicated in FIG. 27. The opening 45' also provides for easier removal of the message card 9 when it is to be replaced by a new message card.

To further secure the message card 9 onto the top surface 44' of the upper member 44, a region of adhesive 48 may be applied to the upper surface 44' of the upper member 44, as indicated in FIG. 26. Alternatively, the adhesive may be available on the rear side of the message card 9 and be of a type which, for example, firmly adheres to the rear side of the message card 9, but not so firmly that it sticks to the upper surface 44' of the upper member 44.

FIG. 30 illustrates how the display apparatus according to the present invention and in accordance with the embodiments shown and described in connection with FIGS. 1-22 appears in a side view when mounted on a filler gun.

FIG. 31 illustrates that the top member 27; 34 (and 37) could be replaced by a top member 49 having no pivotable connection with the upper member 11. In such a variant, the hinge means 24, 30 are not present.

FIG. 32 illustrates a side view of the embodiments according to FIGS. 23, 24 and 25-29.

In connection with the description of FIGS. 1 and 2, it should be noted that the side panels 12, 13 at their front region have edges which mate when the panels are brought to lie against the gun head. Until such moment, the edges are spaced apart. However, in a modified embodiment of the lower member 10, denoted by reference numeral 10a in FIGS. 33 and 35, it is proposed, to let the two side panels 12, 13 be integrally joined at a front region thereof. Suitably, the front region of the two side panels is above, as indicated by reference number 10' and below as indicated by reference number 10" a front opening 10'" in the lower member, through which the fuel gun nozzle 2 extends when the lower member 10a is brought into engagement with the gun head 3 on the filler gun 1, as illustrated on FIG. 33.

FIGS. 12, 14, 17 and 20, show that both the upper surface of the upper member as well as the top member have a curved configuration along its length. However, it is readily conceivable that the top member, as indicated by reference number 50 in the side view of FIG. 36 could have two substantially planar sections 50' and 50" mutually forming an obtuse angle. Similarly, the upper member, here labelled as 51, can have a top surface of similar configuration seen along its length, i.e. two substantially planar, upper surfaces 51' and 51" forming an obtuse angle. Contrary to prior art carrying bodies for a display apparatus which is removably attachable to the filler gun of a fuel pump, the carrying body, in this particular invention a two-piece carrying body, can be made of a substantially hard plastic material. As an example, a suitable material would be e.g. polyamide. In a prototype, polyamide 66 has proved to be a suitable plastic material.

The top member 27; 34 (37); 49; 50 is suitably made of a substantially hard plastic material which may be transparent or non-transparent. A type of material such as polycarbonate has proved to be suitable in connection with a prototype made of the present apparatus. Suitably, the polycarbonate could be e.g. of the make LEXAN.RTM., MAKROLON.RTM., GRILIAMID.RTM. or other suitable make.

In the embodiment of the lower member 10a as described in connection with FIGS. 33-35, when the lower member is to be fitted onto the gun head of the filler gun 1, the rear portions of the side panels 12, 13 may be pushed slightly away from each other to more easily push and enter the lower member 10a onto the filler gun. Although the lower member is made of a substantially hard plastic material, the wall thickness of the lower member is of such dimension that manipulation of the side panels is possible.

With reference to in particular FIG. 7 of the drawings, and also FIG. 26, and further with reference to FIGS. 13, 16, 19, 21, 22 the upper members as shown have a peripheral outline of substantially oval form. Further, the top member also has a peripheral outline of substantially oval form.

Suitable dimensions of the top member in the longitudinal direction are in the range of 110-140 millimeters and a maximum transverse dimension in the range of 80-105 millimeters. Preferably, the longitudinal dimension is in the range of about 120-135 millimeters and the maximum transverse dimension is in the range of about 90-100 millimeters.

With the present invention, it is possible to design a display apparatus having a carrying body with an upper member suitable for any type of filler gun, and a lower member which is selected from a set of lower members, each such lower member being "tailor-made" to fit a particular type or make of filler gun. Thus, use of an upper member having the same display area for all types of filler message guns facilitates standarization of the configuration of the message card.

Although preferred embodiments of the present invention have been shown and described, it will be possible for a person skilled in the art to modify the present display apparatus, and the scope of the present invention is therefor only to be limited by the features of the attached patent claims and technical equivalents thereof.

Claims

1. Display apparatus removably attachable to a fluid pump filler gun, the filler gun including a nozzle and a gun head, said display apparatus comprising:

a substantially hard carrying body comprising a lower member and an upper member releasably engageable with said lower member, said lower member having two side panels, a bottom element and means connecting said side panels with said bottom element, said lower member when two side panels and said bottom element are brought to lie against the gun head substantially fitting around a lower part of the gun head, and side panels having at a top region thereof a first lock device, and said upper member defining a cap fitting over the upper part of the gun head, and having an upper surface and a second lock device releasably engaging said first lock device on said lower member, where said first lock device includes a male element, and said second lock device includes a female element receiving and releasably engaging themale element; and

a top member releasably engageable with said upper member, space being provided between the upper surface of said upper member and a portion of said top member for locating a replaceable message card when said top member and said upper member engage.

2. Display apparatus removably attachable to a fluid pump filler gun, the filler gun including a nozzle, a gun head having an internally located valve with a valve outlet communicating with the nozzle and a valve inlet communicating with a fluid supply extending through a handle of the gun, the handle having a lever operatively connected to the valve, the display apparatus comprising:

a carrying body for displaying a graphic message viewable by a user, said carrying body being adapted to fit over the filler gun;

said carrying body comprising a lower member and an upper member releasably engageable with said lower member, said lower member having two side panels and a bottom element connected with the side panels, said lower member when said two side panels and said bottom element are brought to lie against the gun head substantially fitting around a lower part of the gun head, and said side panels having at respective top regions thereof a first interlock, and said upper member defining a cap fitting over the upper part of the gun head, and having an upper surface and a second interlock for releasably engaging said first interlock on said lower member;

a top member releasably engageable with said upper member, space being provided between the upper surface of said upper member and a portion of said top member for locating a replaceable message card when said top member and said upper member engage, said top member being a lid with a transparent face portion for viewing a message therethrough when said message card is located at the space, and a peripheral skirt portion depending from said face and having means for releasably engaging an upper peripheral portion of said upper member; and

said upper member having a first hinge portion and said top member having a second hinge portion engageable with said first hinge portion for pivotable attachment of said top member to said upper member, wherein said first hinge portion is a cylindrical sleeve, and wherein said second hinge portion is a male member which fits into said cylindrical sleeve for releasable engagement therewith.

3. Display apparatus removably attachable to a conventional fluid pump filler gun, the filler gun including a gun head adapted to be covered by a protective boot of rubber or plastic material, said display apparatus comprising:

a substantially hard carrying body comprising a lower member, and an upper member releasably engageable with said lower member, said lower member having two side panels, a bottom element and means connecting said side panels with said bottom element, said lower member when said two side panels and said bottom element are brought to lie against said gun head and its protective boot substantially fitting around a lower part of the gun head, and said side panels having at a top region thereof a first interlock, said upper member being formed as a cap to fit over an upper part of the gun head and its protective boot, and having a second interlock for releasably engaging said first interlock on said lower member, wherein said first interlock is formed as male elements in the form of snap hooks, and said second interlock is formed as female elements having means for receiving and releasably engaging said hooks; and

a top member releasably engageable with said upper member;

said upper member and said top member being dimensioned to provide a space between an upper face of said upper member and a portion of said top member for locating a replaceable message card when said top member and said upper member engage.

4. Display apparatus removably attachable to a fluid pump filler gun, the filler gun including a nozzle, a gun head adapted to be covered by a protective boot of rubber or plastic material, said gun head having an internally located valve with a valve outlet communicating with the nozzle and a valve inlet communicating with a fluid supply extending through a handle of the gun, the handle having a lever operatively connected to the valve, comprising:

a carrying body for displaying a graphic message viewable by a gun user, said carrying body while attached to the filler gun, without said protective boot having been removed, being adapted to fit over the filler gun;

said carrying body comprising a lower member and an upper member releasably engageable with said lower member, said lower member having two side panels and a bottom element connected with said side panels, said lower member when said two side panels and said bottom element are brought to lie against said gun head and its protective boot substantially fitting around a lower part of the gun head, and said side panels having at respective top regions thereof a first interlock and said upper member being formed as a cap to fit over an upper part of the gun head and its protective boot, and having a second interlock for releasably engaging said first interlock on said lower member, and a first hinge portion; and

a top member having a second hinge portion pivotally engaging the first hinge portion of said upper member, wherein said first hinge portion is a female member in a form of a cylindrical sleeve, and wherein said second hinge portion is a male member which fits into said female member for releasable snap engagement therewith, space being provided between an upper face of said upper member and a portion of said top member for locating a replaceable message card when said top member and said upper member engage.

5. Display apparatus removably attachable to a conventional fluid pump filler gun, the filler gun including a gun head adapted to be covered by a protective boot of rubber or plastic material, said display apparatus comprising:

a substantially hard carrying body comprising a lower member, and an upper member releasably engageable with said lower member, said lower member having two side panels, a bottom element and means connecting said side panels with said bottom element, said lower member when said two side panels and said bottom element are brought to lie against said gun head and its protective boot substantially fitting around a lower part of the gun head, and said side panels having at a top region thereof a first interlock, said upper member being formed as a cap to fit over an upper part of the gun head and its protective boot, and having a second interlock for releasably engaging said first interlock on said lower member; and

a top member releasably engageable with said upper member;

said upper member and said top member being dimensioned to provide a space between an upper face of said upper member and a portion of said top member for locating a replaceable message card when said top member and said upper member engage, wherein said upper member has a first hinge portion and said top member has a second hinge portion engageable with said first hinge portion for pivotable attachment of said top member to said upper member, wherein said first hinge portion is a female member in the form of a cylindrical sleeve, and wherein said second hinge portion is a male member which fits into said female member for releasable snap engagement therewith.

6. Display apparatus removably attachable to a filler gun of a fluid pump, the filler gun including a fuel gun nozzle, a gun head having an internally located valve with a valve outlet communicating with the nozzle and a valve inlet communicating with a fluid supply extending through a handle of the gun, the handle having a lever operatively connected to the valve, the display apparatus comprising:

a carrying body for displaying a graphic message viewable by a user, said carrying body being adapted to fit over the filler gun,

said carrying body comprising a lower member and an upper member releasably engageable with said lower member, said lower member having two side panels and a bottom element connected with said side panels, said lower member when said two side panels and said bottom element are brought to lie against the gun head substantially fitting around a lower part of the gun head, and said side panels having at respective top regions thereof interlocking male elements, and said upper member defining a cap to fit over an upper part of the gun head, and having an upper surface and an interlocking female element for receiving and releasably engaging the interlocking male element on said lower member, and

a top member releasably engageable with said upper member, a space being provided between the upper surface of said upper member and a portion of said top member for locating a replaceable message card when said top member and said upper member engage.

7. Display apparatus removably attachable to a filler gun of a fluid pump, the filler gun including a fuel gun nozzle, a gun head adapted to be covered by a protective boot of rubber or plastic material, said gun head having an internally located valve with a valve outlet communicating with the nozzle and a valve inlet communicating with a fluid supply extending through a handle of the gun, the handle having a lever operatively connected to the valve, said apparatus supporting on its upper surface means for displaying a graphic message readily viewable by a gun user, comprising:

a carrying body for displaying a graphic message viewable by a user, said carrying body while attached to the filler gun, without said protective boot having been removed, being adapted to fit over the filler gun,

said carrying body comprising a lower member and an upper member releasably engageable with said lower member, said lower member having two side panels and a bottom element connected with side panels, said lower member when said two side panels and said bottom element are brought to lie against said gun head and its protective boot substantially fitting around a lower part of the gun head, and said side panels having at respective top regions thereof a snap hook, and said upper member defining a cap to fit over an upper part of the gun head and its protective boot, and having a female element for receiving and releasably engaging the snap hook on said lower member, and

a top member releasably engageable with said upper member, a space being provided between an upper face of said upper member and a portion of said top member for locating a replaceable message card when said top member and said upper member engage.