Information
-
Patent Grant
-
6212980
-
Patent Number
6,212,980
-
Date Filed
Thursday, August 12, 199925 years ago
-
Date Issued
Tuesday, April 10, 200123 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Smith; James G.
- Ojini; Anthony
Agents
-
CPC
-
US Classifications
Field of Search
US
- 081 434
- 081 435
- 081 5736
- 081 5737
-
International Classifications
-
Abstract
An apparatus for sequentially aligning a number of screws with a screwdriver and guiding the number of screws during advancement by the screwdriver is disclosed. The apparatus includes a body which includes (i) a channel adapted to receive a screw strip having the number of screws supported thereon, (ii) a feed passage adapted to sequentially receive the number of screws from the channel, and (ii) a guide track having a planar segment and an inclined ramp segment. The apparatus further includes a movable pawl which travels on the guide track through the planar segment and the inclined ramp segment, wherein (i) the movable pawl contacts at least one of the number of screws when both the movable pawl is located on the planar segment of the guide track and the screw strip having the number of screws supported thereon is located in the channel, and (ii) the movable pawl is spaced apart from all of the number of screws when both the movable pawl is located on the inclined ramp segment of the guide track and the screw strip having the number of screws supported thereon is located in the channel. Moreover, the movable pawl includes a spring and a slider assembly. The spring biases the slider assembly from the inclined ramp segment toward the planar segment.
Description
BACKGROUND OF THE INVENTION
The present invention relates generally to a screw aligning and guiding device, and more particularly to a screw aligning and guiding device having an arrangement which facilitates loading and unloading of a screw strip into and out of the device.
Numerous screw aligning and guiding devices have heretofore been designed which are adapted to be used with screw strips which have a number of screws supported thereon. The screw aligning and guiding devices are designed to sequentially feed screws into alignment with a bit end of a shaft driven by an electrically powered drill. The screw aligning and guiding devices are also designed to sequentially guide such screws during advancement thereof into a workpiece of such shaft.
In order to sequentially feed screws into alignment with the bit end of the shaft, the previously designed screw aligning and guiding devices have incorporated various pawl and ratchet mechanisms. Such mechanisms operate to engage one of the screws supported on an associated screw strip and urge the screw, and consequently the entire screw strip, upwardly toward a desired position. Typically, the previously designed screw aligning and guiding devices have utilized various springs to generate the biasing force needed to urge the screw strip upwardly.
The pawl and ratchet mechanisms, along with their associated springs, tend to be quite complex arrangements. Further, the interaction of the mechanical parts of the pawl and ratchet mechanism with the screws of the screw strip, make loading and unloading of the screw strip into and out of the device a somewhat difficult and complicated task.
What is needed therefore is a screw aligning and guiding device which overcomes one or more drawbacks of the previously designed devices. For example, what is needed is a screw aligning and guiding device which possesses a mechanism for urging a screw strip upwardly to a desired position in the device which is relatively less mechanically complex. Moreover, for example, what is needed is a screw aligning and guiding device which enables very easy loading and unloading of an associated screw strip into and out of the device.
SUMMARY OF THE INVENTION
In accordance with one embodiment of the present invention, there is provided an apparatus for sequentially aligning a number of screws with a screwdriver and guiding the number of screws during advancement by the screwdriver. The apparatus includes a body which includes (i) a channel adapted to receive a screw strip having the number of screws supported thereon, (ii) a feed passage adapted to sequentially receive the number of screws from the channel, and (ii) a guide track having a planar segment and an inclined ramp segment. The apparatus further includes a movable pawl which travels on the guide track through the planar segment and the inclined ramp segment, wherein (i) the movable pawl contacts at least one of the number of screws when both the movable pawl is located in the planar segment of the guide track and the screw strip having the number of screws supported thereon is located in the channel, and (ii) the movable pawl is spaced apart from all of the number of screws when both the movable pawl is located on the inclined ramp segment of the guide track and the screw strip having the number of screws supported thereon is located in the channel.
Pursuant to another embodiment of the present invention, there is provided a screw driver assembly which includes a shaft having a screw engaging end. The assembly further includes a body which includes (i) a channel adapted to receive a screw strip having a number of screws supported thereon, (ii) a feed passage adapted to sequentially receive the number of screws from the channel and guide the number of screws during advancement by the shaft, and (iii) a number of rails. Moreover, the assembly includes a movable pawl which travels on the number of rails, wherein (i) the movable pawl is positioned to contact at least one of the number of screws in the channel when both the movable pawl is located on a first portion of the number of rails and the screw strip having the number of screws supported thereon is located in the channel, and (ii) the movable pawl is spaced apart from all of the number of screws when both the movable pawl is located on a second portion of the number of rails and the screw strip having the number of screws supported thereon is located in the channel.
According to still another embodiment of the present invention, there is provided a screw aligning and guiding device. The device includes a body which includes (i) a channel adapted to receive a screw strip having a number of screws supported thereon, and (ii) a feed passage adapted to sequentially receive the number of screws from the channel and guide the number of screws during advancement by a screwdriver. The device further includes a movable pawl which is movable relative to the body, wherein (i) the movable pawl is positioned to contact at least one of the number of screws in the channel when both the movable pawl is located at a first orientation with respect to the body and the screw strip having the number of screws supported thereon is located in the channel, and (ii) the movable pawl is spaced apart from all of the number of screws when both the movable pawl is located at a second orientation with respect to the body and the screw strip having the number of screws supported thereon is located in the channel. The screw strip used in the device has an upper end and a lower end. And the movable pawl is located at a vertical position which is interposed between the upper end and the lower end when (i) the movable pawl is located at the second orientation with respect to the body, and (ii) the screw strip having the number of screws supported thereon is located in the channel.
It is therefore an object of the present invention to provide a new and useful screw aligning and guiding device.
It is another object of the present invention to provide an improved screw aligning and guiding device
It is yet another object of the present invention to provide a screw aligning and guiding device which possesses a mechanism for urging a screw strip upwardly to a desired position in the device which is relatively less mechanically complex.
It is still another object of the present invention to provide a screw aligning and guiding device which enables very easy loading and unloading of an associated screw strip into and out of the device.
Other objects and benefits of the present invention can be discerned from the following description and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a left side elevational view of a screw aligning and guide device which incorporates the features of the present invention therein;
FIG,
2
is an enlarged side elevational view of a first housing portion of the screw aligning and guiding device of
FIG. 1
, with the first housing portion shown rotated 180° relative to its position depicted in
FIG. 1
so as to show its internal structures and components thereof;
FIG. 3
is a right side elevational view of the screw aligning and guiding device of
FIG. 1
;
FIG. 4
is an enlarged side elevational view of a second housing portion of the screw aligning and guiding device of
FIG. 1
, with the second housing portion shown rotated 180° relative to its position depicted in
FIG. 3
so as to show its internal structures and components thereof;
FIG. 5
is a top elevational view of the screw aligning and guiding device of
FIG. 1
;
FIG. 6
is an enlarged fragmentary view of the exit opening of the screw aligning and guiding device of
FIG. 5
;
FIG. 7
is a front elevational view of the screw aligning and guiding device of
FIG. 1
;
FIG. 8
is an enlarged fragmentary view of a lower portion of
FIG. 7
showing the ramp member which is defined by the body of the screw aligning and guiding device;
FIG. 9
is an elevational view of a strip having a number of screws supported thereon which is used with the screw aligning and guiding device of
FIG. 1
;
FIG. 10
is a partial cross-sectional view of the movable pawl of the screw aligning and guiding device of
FIG. 1
cooperating with one of the rails of the body; and
FIG. 11
is an enlarged view of
FIG. 7
but showing the handle of the movable pawl removed from the device for clarity of description.
DESCRIPTION OF THE PREFERRED EMBODIMENT
While the invention is susceptible to various modifications and alternative forms, a specific embodiment thereof has been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Referring now to
FIGS. 1 and 3
, there is shown a screw aligning and guiding device
10
. The device includes a first housing portion
11
as shown in
FIG. 2
, and a second housing portion
12
as shown in FIG.
4
. The first and second housing portions
11
,
12
are preferably made from a 20% glass-filled nylon material, however, other types of thermoplastic materials may be used to make the housing portions
11
,
12
. The first housing portion
11
cooperates with the second housing portion
12
to form a body
13
having a handle
14
which enables a user to conveniently manipulate the device
10
during use thereof.
The device
10
is adapted to receive a screw strip
15
having a number of screws
16
supported thereon (see FIG.
9
). The screw strip includes an upper end
18
and a lower end
20
as shown in FIG.
9
.
FIGS. 1 and 3
show the screw strip
15
and a number of screws
16
received within the device
10
. Note that at certain times during operation of the device
10
, an upper portion of the strip
15
extends out of an exit opening
17
defined in the top of the device
10
, and a lower portion of the strip
15
extends out of an entrance opening
19
defined in the bottom of the device
10
as shown in
FIGS. 1 and 3
. The screws
16
may be any suitable type or possess any suitable size. For example, the screws
16
may be 2″ yellow zinc coated screws. Alternatively, for example, the screws
16
may be 2″ galvanized deck screws.
FIG. 2
shows the interior of the first housing portion
11
. Note that
FIG. 1
shows the exterior of the first housing portion
11
.
FIG. 2
shows the first housing portion rotated 180° relative to its position shown in
FIG. 1
so as to expose internal structures and components thereof. The first housing portion
11
defines a channel portion
22
, a feed passage portion
24
, a screw head recess portion
26
, and a guide track
28
. The guide track
28
includes a pair of rails
30
which are spaced apart from each other so as to define a slider gap
32
. The first housing portion
11
further includes a number of support ribs
34
positioned in a pattern to provide stability to the device
10
.
FIG. 4
shows the interior of the second housing portion
12
. Note that
FIG. 3
shows the exterior of the second housing portion
12
.
FIG. 4
shows the second housing portion rotated
180
° relative to its position shown in
FIG. 3
so as to expose internal structures and components thereof. The second housing portion
12
defines a channel portion
35
, a feed passage portion
36
, and a screw head recess portion
38
. The second housing portion
12
further includes a number of support ribs
40
positioned in a pattern to provide stability to the device
10
.
The channel portion
22
and the channel portion
35
cooperate to define a strip and screw channel though which the screw strip
15
and the number of screws
16
supported thereon are advanced during operation of the device
10
. The second housing portion
12
further includes a number of guide members
42
as shown in
FIG. 4
which function to guide the screw strip
15
during advancement through the strip and screw channel.
The feed passage portion
24
and the feed passage portion
36
cooperate to define a feed passage adapted to sequentially receive screws
16
therein and guide the screws during advancement thereof by a shaft
44
having a bit end which is adapted to meshingly engage the head of a respective screw
16
(see FIG.
2
). Note that the shaft
44
is driven by an electrically powered drill
46
as schematically shown in FIG.
2
.
The screw head recess portion
26
and the screw head recess portion
38
cooperate to define a screw head recess which functions to allow vertical advancement of the screws
16
while preventing lateral advancement of the screws
16
(except for the uppermost screw on the screw strip
15
) during operation of the device
10
. Note that
FIGS. 2 and 4
show a number of screws (in phantom) having their heads located in the screw head recess. Only selected screws
16
are shown supported by the screw strip
15
in
FIGS. 2 and 4
for clarity of description. However, it should be noted that the screws
16
advancing though the device
10
would typically be supported on the screw strip
15
in a manner as shown in FIG.
9
.
The device
10
further includes a movable pawl
48
which includes a spring
50
and a movable slider assembly
52
. The spring
50
possesses a coil-shape in its relaxed, non-stressed state. During operation of the device
10
, the spring
50
is located in a spring recess
54
which is defined by the first housing portion
11
. An end portion of the spring
50
is secured to the slider assembly
52
by a fastener
56
which extends through the slider gap
32
as shown in
FIG. 2
(see also FIG.
10
). The spring
50
is preferably a stainless steel constant force spring. The spring
50
travels in sliding contact on the pair of rails
30
of the guide track
28
on the interior side of the housing portion
11
as shown in
FIGS. 2 and 10
.
The slider assembly
52
includes an external handle
58
which travels in sliding contact on the pair of rails
30
on the exterior side of the housing portion
11
as shown in FIG.
1
. The slider assembly
52
further includes an internal plate
60
which is positioned in contact with the spring
50
as shown in FIG.
10
. The slider assembly
52
further includes a finger
62
which is secured to both the external handle
58
and the internal plate
60
by the fastener
56
.
FIG. 10
shows a cross-sectional view of the components of the slider assembly
52
cooperating with one of the rails
30
.
During operation of the device
10
, the finger
62
is urged upwardly by the spring bias of the spring
50
. As a result, the finger
62
contacts one of the screws
16
and urges such screw
16
, and consequently, the entire screw strip
15
and all of the other screws
16
supported thereon upwardly until the uppermost screw
16
is positioned within the feed passage
24
,
36
as shown in
FIG. 2
Thereafter, the drill
46
is operated to rotate the uppermost screw
16
. Rotation of the uppermost screw
16
causes such screw to separate from the screw strip
15
in a conventional manner. Then, advancement of shaft
44
causes advancement of such screw
16
whereby the structure of the device
10
which defines the feed passage
24
,
36
guides the screw
16
during its advancement within the device
10
. Thereafter, continued rotation of the screw
16
by the shaft
44
causes the screw
16
to be advanced into a workpiece such as a piece of wood.
After the uppermost screw
16
is advanced into the workpiece and the shaft
44
is retracted out of the feed passage
24
,
36
, the next uppermost screw
16
is advanced into the feed passage
24
,
36
in a similar manner. Once the spring
50
retracts substantially completely into the spring recess
54
such that slider assembly
52
is moved to its uppermost position, the slide pawl must be cocked or otherwise manually pulled downwardly to again generate spring bias to urge the screw strip
15
and the screws
16
supported thereon in an upward direction.
In order to prevent the screw strip
15
and the associated screws
16
from being pulled downwardly while the movable pawl is being cocked downwardly, the device
10
further includes a stationary pawl
64
, The stationary pawl
64
includes an end portion which extends into the strip and screw channel
22
,
35
so that such end portion contacts one screw
16
supported on the strip
15
as the movable pawl is being cocked downwardly thereby preventing further downward travel of the screw strip
15
and the associated screws
16
.
FIG. 4
shows the screw
16
which is positioned next to the uppermost screw
16
contacting the stationary pawl
64
.
The stationary pawl
64
is secured to the second housing portion
12
by a fastener
66
. A pair of guards
67
are positioned adjacent to the stationary pawl
64
as shown in
FIGS. 3 and 5
to provide protection to the stationary pawl
64
from inadvertent contact.
The guide track
28
includes a planar segment
68
and an inclined ramp segment
70
as shown in FIG.
11
. In particular, the rails
30
extend for a first distance in a substantially planar manner from a point A to a point B. Then, the rails
30
extend in an inclined ramp-like manner from the point B to a point C. To this end, the first housing portion
11
includes a ramp member
72
defined therein as shown in FIG.
11
.
When both the movable pawl
48
is located on the planar segment of the guide track
28
and the screw strip
15
having the number of screws
16
supported thereon is located in the strip and screw channel
22
,
35
, the movable pawl
48
contacts at least one of the number of screws
16
so as to urge the screw strip
15
and associated screws
16
upwardly. In particular, when both the movable pawl
48
is located on the planar segment of the guide track
28
and the screw strip
15
having the number of screws
16
supported thereon is located in the strip and screw channel
22
,
35
, the finger
62
of the movable pawl
48
is urged into contact with a lower side of a corresponding screw
16
as shown in
FIG. 2
so as to urge the entire screw strip
15
and associated screws
16
upwardly.
After all of the screws
16
associated with one screw strip
15
are utilized, and it is desired to load a new screw strip
15
having associated screws
16
supported thereon into the device
10
, a user grasps the handle
58
of the movable pawl
48
and urges it downwardly against the spring bias of the spring
50
from its actual position shown in solid lines in
FIG. 1
to a loading position shown in phantom in FIG.
1
. This action causes the slider assembly
52
to be advanced in sliding contact with the rails
30
to the loading position shown in phantom in FIG.
1
. Now with the slider assembly
52
positioned in such loading position, the new screw strip
15
with its associated screws
16
is advanced upwardly into the strip and screw channel
22
,
35
until its upper most screw is positioned in the feed passage
24
,
36
.
When the movable pawl
48
is located on the inclined ramp segment
70
of the guide track
28
and the screw strip
15
having the number of screws
16
supported thereon is located in the strip and screw channel
22
,
35
, the movable pawl
48
is spaced apart from all of the number of associated screws
16
. In particular, when both the movable pawl
48
is located on the inclined ramp segment
70
of the guide track
28
and the screw strip
15
having the number of screws
16
supported thereon is located in the strip and screw channel
22
,
35
, the finger
62
of the movable pawl
48
is spaced apart from all of the number of associated screws
16
. Moreover, when the movable pawl
48
is located at this orientation relative to the first housing portion
11
, the movable pawl
48
(including its finger
62
) is located at a vertical position which is interposed between the upper end
18
of the screw strip
15
and the lower end
20
of the screw strip
15
.
Thereafter, once the new strip
15
and associated screws
16
are loaded into the strip and screw channel
22
,
35
, the movable pawl
48
is released thereby allowing the slider assembly
52
to be urged upwardly by the spring bias of spring
50
until the finger
52
contact one of the screws
16
to urge the entire strip
15
and its associated screws
16
upwardly.
If it is desired to remove a partially full screw strip from the device
10
(i.e. a screw strip
15
from which a number of screws have been removed, yet some are still remaining on the screw strip), the present invention facilitates such removal. In particular, in order to remove such partially full screw strip, the handle
58
is advanced onto the inclined ramp segment
70
to a location as shown in phantom in
FIGS. 7 and 8
. Thereafter, with the handle
58
located on the inclined ramp segment
70
, the user grasps an end portion of the stationary pawl
64
which is extending out of the body
13
as shown in FIG.
5
and pulls the stationary pawl
64
in a direction indicated by arrow D. Pulling the stationary pawl
64
in such a direction moves the stationary pawl
64
out of the strip and screw channel
22
,
35
so as to allow the strip
15
along with the associated screws
16
to be freely advanced downwardly out through the entrance opening
19
of the body
13
.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiments and methods have been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.
There are a plurality of advantages of the present invention arising from the various features of the screw aligning and guiding device described herein. It will be noted that alternative embodiments of the screw aligning and guiding device of the present invention may not include all of the features described yet still benefit from at least some of the advantages of such features. Those of ordinary skill in the art may readily devise their own implementations of the screw aligning and guiding device that incorporate one or more of the features of the present invention and fall within the spirit and scope of the present invention as defined by the appended claims.
Claims
- 1. An apparatus for sequentially aligning a number of screws with a screwdriver and guiding said number of screws during advancement by said screwdriver, comprising:a body which includes (i) a channel adapted to receive a screw strip having said number of screws supported thereon, (ii) a feed passage adapted to sequentially receive said number of screws from said channel, and (ii) a guide track having a planar segment and an inclined ramp segment; and a movable pawl which travels on said guide track through said planar segment and said inclined ramp segment, wherein (i) said movable pawl contacts at least one of said number of screws when both said movable pawl is located on said planar segment of said guide track and said screw strip having said number of screws supported thereon is located in said channel, and (ii) said movable pawl is spaced apart from all of said number of screws when both said movable pawl is located on said inclined ramp segment of said guide track and said screw strip having said number of screws supported thereon is located in said channel.
- 2. The apparatus of claim 1, wherein:said movable pawl includes a spring and a slider assembly, and said spring biases said slider assembly from said inclined ramp segment toward said planar segment.
- 3. The apparatus of claim 2, wherein:said body includes a spring recess, said spring is positioned within said spring recess, an end portion of said spring is secured to said slider assembly.
- 4. The apparatus of claim 3, wherein:said guide track includes a pair of spaced apart rails defined by said body, said pair of spaced apart rails defines a slider gap, said slider assembly includes (i) an internal plate located on a first side of said rails, (ii) an external handle positioned on a second side of said rails, and (iii) a fastener which extends through said slider gap to secure said internal plate to said external handle, and (iv) a finger secured to said internal plate, and said finger contacts said at least one of said number of screws when both said movable pawl is located on said planar segment of said guide track and said screw strip having said number of screws supported thereon is located in said channel.
- 5. The apparatus of claim 4, wherein:said finger is spaced apart from all of said number of screws when both said movable pawl is located on said inclined ramp segment of said guide track and said screw strip having said number of screws supported thereon is located in said channel.
- 6. The apparatus of claim 5, wherein:said finger is spaced apart from said channel when said movable pawl is located on said inclined ramp segment of said guide track.
- 7. The apparatus of claim 4, wherein said pair of spaced apart rails defines said inclined ramp segment.
- 8. The apparatus of claim 1, further comprising a stationary pawl which is secured to said body and contacts another one of said number of screws when said movable pawl is moved from said planar segment to said inclined ramp segment.
- 9. A screw driver assembly, comprising:a shaft having a screw engaging end; a body which includes (i) a channel adapted to receive a screw strip having a number of screws supported thereon, (ii) a feed passage adapted to sequentially receive said number of screws from said channel and guide said number of screws during advancement by said shaft, and (iii) a number of rails; and a movable pawl which travels on said number of rails, wherein (i) said movable pawl is positioned to contact at least one of said number of screws in said channel when both said movable pawl is located on a first portion of said number of rails and said screw strip having said number of screws supported thereon is located in said channel, and (ii) said movable pawl is spaced apart from all of said number of screws when both said movable pawl is located on a second portion of said number of rails and said screw strip having said number of screws supported thereon is located in said channel.
- 10. The apparatus of claim 9, wherein:said movable pawl includes a spring and a slider assembly, and said spring biases said slider assembly from said second portion of said number of rails toward said first portion of said number of rails.
- 11. The apparatus of claim 10, wherein:said body includes a spring recess, said spring is positioned within said spring recess, an end portion of said spring is secured to said slider assembly.
- 12. The apparatus of claim 11, wherein:said number of rails defines a slider gap, said slider assembly includes (i) an internal plate located on a first side of said number of rails, (ii) an external handle positioned on a second side of said number of rails, and (iii) a fastener which extends through said slider gap to secure said internal plate to said external handle, and (iv) a finger secured to said internal plate, and said finger contacts said at least one of said number of screws when both said movable pawl is located on said first portion of said number of rails and said screw strip having said number of screws supported thereon is located in said channel.
- 13. The apparatus of claim 12, wherein:said finger is spaced apart from all of said number of screws when both said movable pawl is located on said second portion of said number of rails and said screw strip having said number of screws supported thereon is located in said channel.
- 14. The apparatus of claim 9, wherein:said body further defines an inclined ramp member, and said inclined ramp member is defined by said second portion of said pair of spaced apart rails.
- 15. The apparatus of claim 9, further comprising a stationary pawl which is secured to said body and contacts another one of said number of screws when said movable pawl is moved from said first portion of said number of rails to said second portion of said number of rails.
- 16. A screw aligning and guiding device, comprising:a body which includes (i) a channel adapted to receive a screw strip having a number of screws supported thereon, (ii) a feed passage adapted to sequentially receive said number of screws from said channel and guide said number of screws during advancement by a screwdriver, and (iii) a guide track; and a movable pawl which is movable relative to said body on said guide track, wherein (i) said movable pawl is positioned to contact at least one of said number of screws in said channel when both said movable pawl is located at a first location on said guide track and said screw strip having said number of screws supported thereon is located in said channel, and (ii) said movable pawl is spaced apart from all of said number of screws when both said movable pawl is located at a second location on said guide track and said screw strip having said number of screws supported thereon is located in said channel, wherein said first location on said guide track is spaced apart from said second location on said guide track, and wherein movement of said movable pawl from said first location on said guide track to said second location on said guide track causes said movable pawl to move in a direction away from said screw strip.
- 17. The apparatus of claim 16, wherein;said movable pawl includes a spring and a slider assembly, and said spring biases said slider assembly from said second location on said guide track toward said first location on said guide track.
- 18. A screw aligning and guiding device, comprising:a body which includes (i) a channel adapted to receive a screw strip having a number of screws supported thereon, and (ii) a feed passage adapted to sequentially receive said number of screws from said channel and guide said number of screws during advancement by a screwdriver; and a movable pawl which is movable relative to said body, wherein (i) said movable pawl is positioned to contact at least one of said number of screws in said channel when both said movable pawl is located at a first orientation with respect to said body and said screw strip having said number of screws supported thereon is located in said channel, and (ii) said movable pawl is spaced apart from all of said number of screws when both said movable pawl is located at a second orientation with respect to said body and said screw strip having said number of screws supported thereon is located in said channel, wherein said screw strip has an upper end and a lower end, and wherein said movable pawl is located at a vertical position which is interposed between said upper end and said lower end when (i) said movable pawl is located at said second orientation with respect to said body, and (ii) said screw strip having said number of screws supported thereon is located in said channel, wherein said movable pawl includes a spring and a slider assembly, wherein said spring biases said slider assembly from said second orientation to said first orientation, wherein said body includes a spring recess, wherein said spring is positioned within said spring recess, wherein an end portion of said spring is secured to said slider assembly.
- 19. The apparatus of claim 18, wherein:said guide track includes a pair of spaced apart rails defined by said body, said pair of spaced apart rails defines a slider gap, said slider assembly includes (i) an internal plate located on a first side of said rails, (ii) an external handle positioned on a second side of said rails, and (iii) a fastener which extends through said slider gap to secure said internal plate to said external handle, and (iv) a finger secured to said internal plate, and said finger contacts said at least one of said number of screws when both said movable pawl is located at said first orientation and said screw strip having said number of screws supported thereon is located in said channel.
- 20. The apparatus of claim 19, wherein:said finger is spaced apart from all of said number of screws when both said movable pawl is located at said second orientation and said screw strip having said number of screws supported thereon is located in said channel.
- 21. The apparatus of claim 19, wherein:said body further defines an inclined ramp member, and said inclined ramp member is defined by at least a portion of said pair of spaced apart rails.
- 22. A screw aligning and guiding device, comprising:a body which includes (i) a channel adapted to receive a screw strip having a number of screws supported thereon, and (ii) a feed passage adapted to sequentially receive said number of screws from said channel and guide said number of screws during advancement by a screwdriver; and a movable pawl which is movable relative to said body, wherein (i) said movable bawl is positioned to contact at least one of said number of screws in said channel when both said movable pawl is located at a first orientation with respect to said body and said screw strip having said number of screws supported thereon is located in said channel, and (ii) said movable pawl is spaced apart from all of said number of screws when both said movable pawl is located at a second orientation with respect to said body and said screw strip having said number of screws supported thereon is located in said channel, wherein said screw strip has an upper end and a lower end, and wherein said movable pawl is located at a vertical position which is interposed between said upper end and said lower end when (i) said movable pawl is located at said second orientation with respect to said body, and (ii) said screw strip having said number of screws supported thereon is located in said channel, and further comprising a stationary pawl which is secured to said body and contacts another one of said number of screws when said movable pawl is moved from said first orientation with respect to said body to said second orientation with respect to said body.
US Referenced Citations (45)
Foreign Referenced Citations (4)
Number |
Date |
Country |
2750562 |
Nov 1977 |
DE |
0248101 |
Jun 1986 |
EP |
2132531 |
Jul 1984 |
GB |
2147873 |
May 1985 |
GB |