Patent Application
20060226168
The present invention relates generally to adhesive applicators. More particularly, the present invention relates to an apparatus for the placement of seam tape to a roof, a roofing membrane, or to a membrane used with a low-slope roof, the apparatus may be described as a roofing seam tape applicator.
It will be appreciated by those skilled in the art that commercial equipment is available to apply roofing seam tape to a single ply membrane surface. Such conventional systems have been generally designed to lay material on a roof that comes in roll form and is applied in sheet form. These prior art pieces of equipment have ranged from the effective but complicated to the ineffective.
The conventional systems normally would require an elaborate routing of the rolled material through the conventional system as it is applied to the roof. Other forms of conventional pieces of equipment have required platforms and implementation of heat in order to properly lay the sheet material on the roof.
Additionally, conventional applicators for sheet material on rooftops do not allow for direct viewing of the application of the sheet material to the roof. In these conventional pieces of equipment, the elements of the equipment themselves block the view of an operator of the conventional equipment.
These other prior art attempts fail to provide a simple roofing seam tape applicator that facilitates easy alignment of the roofing tape onto the roof in the proper position and then allows the machine to be loaded with the roll of material for further application of the seam tape to the roof.
Additionally, the prior art attempts have had difficulty in applying proper pressure to the tape across the full width of the tape. The inconsistencies may arise by improper balancing of the weight of the conventional applicators. Additionally, the conventional applicators traditionally lack the ability to adjust to imperfections in the roofing surface. As such, a proper adhesion or bond is not realized.
What is needed then is a roofing seam tape applicator that facilitates the proper alignment of the seam tape to a roof, or a membrane on the roof deck. Additionally, the applicator could include cushioned supports and pressure elements used to place the seam tape on the roof, or roofing membrane, and follow the contours of the roof when they are irregular. This type of roofing seam tape applicator is lacking in the art.
Disclosed herein is an apparatus for placement of seam tape to a roof. The apparatus comprises first and second sides spaced a distance apart, wherein each side includes a material axle opening and a pressure applicator orifice. The apparatus also comprises a removable pressure applicator having a first end and second end positioned in the pressure applicator orifices of the first and second sides. A support element may be operatively attached to the first and second sides, span the distance between the first and second sides, and positioned opposite the pressure applicator to support the apparatus.
Additionally, a material axle may be positioned such that its ends are removably positioned in the material axle openings of the first and second sides. A closed front side may connect the first and second side, while an open stern may allow direct access to the pressure applicator, the support element, and the material axle. Additionally a tension element may be positioned approximately below one of the material axle openings to maintain a level of pressure on a roll of material positioned on the material axle. A handle may be rotatively fixed to the first and second sides for imparting horizontal momentum to the apparatus.
The pressure applicator may include a deflecting axle positioned to removably secure the pressure applicable orifice of the first and second sides. Alternately, the pressure applicator orifice may be shaped into a slotted opening that may be notched to accept the pressure applicator and to removably secure the pressure applicator in the pressure applicator orifice of the first and second side.
Also, the apparatus may include at least one handle stop attached to at least one of the first or second sides to restrict rotational movement of the handle. Additionally, the material axle may include material guides removably positioned on a material axle to align the roll of material on the material axle.
The pressure applicator may be comprised of a weighted cushion material used to provide pressure for the application of the seam tape to the roof wherein the surface of the roof is uneven. The hardness of the weighted cushion material may vary across the length of the pressure applicator. For example, each end of the pressure applicator may include a hardness that is greater than the hardness of a middle section of the pressure applicator. The middle section may substantially span the length of the pressure applicator.
Referring generally now to
The first and second sides (16 and 18) may be spaced a distance (17) apart, which may also be described as a width (17). Preferably the distance (17) is a distance suitable to accommodate the width of the material (12). The first and second sides (16 and 18) may include a material axle opening (26) and a pressure applicator orifice (28), which may also be described as a pressure roll aperture (28) or a pressure roll channel (28).
The pressure applicator (20), which may also be described as a removable pressure roll (20), includes a first pressure applicator end (30) positioned in the pressure applicator orifice (28) of the first side (16). The pressure applicator (20) also includes a second applicator end (32) positioned in the pressure applicator orifice (28) of the second side (18). The ends (30 and 32) may be positioned in the pressure applicator orifices (28) such that they may be secured and removed by a user of the apparatus (10). Alternately described, the pressure applicator (20) may be removably secured to the pressure applicator orifices (28) through the use of the first and second pressure applicator ends (30 and 32).
The pressure applicator (20) may include an axle (21) that may be positioned in the pressure applicator orifice (28) to securely and removably engage the pressure applicator orifice (28) of the first and second sides (16 and 18). The axle (21) may be positioned in the orifices (28) through an axial defection. The axle (21) may be compressed and inserted between the sides (16 and 18) and then released to extend beyond the width (17) of the apparatus (10). In this embodiment, the axle (21) may be compressed or deflected axially to fit between the first and second sides (16 and 18) such that the axle (21) may be removably secured to the pressure applicator orifice (28).
Alternately, the pressure applicator orifice (28) may include a slotted opening (29) that may be notched to accept the pressure applicator (20) such that the slotted opening (29) removably secures the pressure applicator (20) to the pressure applicator orifice (28) of the first and second sides (16 and 18). The slotted opening (29) may be shaped to provide the proper resistance and securement to the pressure applicator (20) in order to secure the pressure applicator (20) to the first and second sides (16 and 18). The slotted opening (29) may be sized to provide a frictional fit to the pressure applicator (20) or to the axle (21) to secure the pressure applicator (20) to the first and second sides (16 and 18). In a preferred embodiment the slotted opening (29) may be described as being generally “J shaped.”
The support element (22), which may also be described as a guide roll (22), may be operatively attached to the first and second sides (16 and 18) such that the support element (22) spans the distance (17). The support element may be located on support axle (25). Additionally, the support element (22) may be positioned opposite the pressure applicator (20) to support the apparatus (10). The support element (22) may be fixed to the first side (16) or second side (18). Alternately, the support element (22) may be removably secured to at least one of the first or second sides (16 and 18).
As seen in
The material axle (24), which may also be described as a tape axle (24), may include a first material axle end (34) removably positioned in the material axle opening (26) of the first side (16). Additionally, the material axle (24) may include a second material axle end (36) removably positioned in the material axle opening (26) of the second side (18). Preferably the material axle opening (26), which may also be described as a tape axle aperture (26) or a tape axle channel (26), extends down from the open top (38) of the apparatus (10). This positioning may facilitate the placement of a roll (13) of material (12) in the apparatus (10). Alternately, the material axle opening (26) may be a depression, orifice, or the like positioned in the first side (16) or second side (18) to removably secure the material axle (24) to the apparatus (10), including a Johnson and Johnson brand material axle retaining element.
The material axle (24) may further include material guides (40) that may be removably positioned on the material axle (24) to align the roll (13) of material (12) on the material axle (24). In a preferred embodiment the material guides (40) may be slidably positioned along the length of the material axle (24) to allow for variances in the size of the roll (13).
Preferably the material axle opening (26) may be positioned between and above the pressure applicator (20) and support element (22). Alternately described, the material axle opening (26) may support the material axle (24) and the roll (13) of material (12) in a position that is horizontally between the pressure applicator (20) and support element (22) while being vertically above the pressure applicator (20) and support element (22).
The apparatus (10) may also include a front side (42) connecting the first side (16) to the second side (18). The front side (42) is preferably closed and may be described as a front plate connecting the first and second sides (16 and 18). Preferably the front plate (42) may span the distance (17) between the first side (16) and second side (18) and may substantially span the height (15) of the apparatus (10).
Additionally, the apparatus (10) may include an open stern (44), which may also be described as an open back (44), that allows direct access to and easy removal of the pressure applicator (20). Additionally the open stern (44) may provide direct access to the support element (22), the material axle (24), and the roll of material (13). Direct access to an element of the apparatus (10) may be defined as an unobstructed view of the element to be accessed. The open stern (44), direct access to the roll of material (13), and the easy removal of the pressure applicator (20) may facilitate the placement and alignment of the material (12) to the surface (14), as will be subsequently described. The open stern (44) may include a top stern portion (45) and a bottom stern portion (46). The top stern portion (45) and bottom stern portion (46) may meet at angle (47) to further facilitate the alignment of the material (12) to the surface (14) through the reduction in side obstructions in to the applicator. This provides greater access to and viewing of the roll of material (13) and the material (12) that is to be placed on the surface (14).
The apparatus (10) may further comprise an optional tension element (48) positioned to maintain a level of pressure in the roll (13) of material (12) as positioned on the material axle (24). The tension element (48) may be positioned approximately below the material axle opening (26). This positioning may use the effects of gravity on the roll (13), in combination with the pressure inducing feature of the tension element, to maintain the level of pressure. The tension element (48) may also be described as being positioned to maintain a level of tension in the roll (13), or positioned to restrict rotational movement of the roll (13). The tension element (48) may span the distance (17) between the first side (16) and second side (18). This facilitates the maintenance of a level of pressure on the roll (13) across the width of the roll (13) and restricts the unintentional unwinding of the roll (13) during operation of the applicator (10). In a preferred embodiment the tension element (48) may be a spring loaded pressure plate.
In other embodiments, restriction of unintentional unwinding of the role (13) may be provided by material axle ends (34, 36). Specifically, first material axle end (34) may frictionally contact first side (16) and second material axle end (36) may frictionally contact second side (18). Ends (34, 36) may be adjustable in the axial direction to provide frictional resistance to axle (24) rotation. In one or more embodiments, ends (34 and 36) may include bolts or screws, which are received in threaded holes (not shown) at the ends of axle (24).
The apparatus (10) may also include a handle (50) rotatively fixed to at least one of the sides (16 or 18). The handle (50) may be used to transmit horizontal momentum to the apparatus (10) from a user (not pictured) of the apparatus (10). Preferably the handle (50) may be rotatively attached to both the first and second sides (16 and 18).
Additionally, the apparatus (10) may include at least one handle stop (52) attached to at least one of the sides (16 or 18) to restrict the movement of the handle (50). The handle stop (50) may also be described as restricting the rotational motion of the handle (50). In a preferred embodiment the apparatus (10) may include two handle stops (52) positioned on each side (16 and 18) such that the handle stops (52) may limit the rotational movement of the handle (50) in both rotational directions.
Additionally, in one or more embodiments the apparatus (10) may include a tilt stand (58) positioned on front plate (42). An operator may tilt the apparatus (10) to a resting position. In the resting position, apparatus (10) is supported by tilt stand (58) and support element (22). In this manner, pressure applicator (20) is raised away from surface (14) allowing for the placement and alignment of material (12). Additionally, while in the resting position, pressure applicator (20) may be easily accessed and removed.
Apparatus (10) may also include a tape edge guide (62) which may be positioned for movement on a guide shaft (60. Tape edge guide (62) may slide laterally on shaft (60). Tape edge guide (62) may also pivot about shaft (60). Thus, in this manner tape edge guide (62) may be positioned at a desired orientation by an operator. The desired orientation may be maintained by a set screw or the like. Tape edge guide (62) may be used as a visual reference point by an operator to ensure proper tape alignment.
The open top (38), open stern (44), tape edge guide (62), and pressure applicator (20) facilitate visual confirmation of the alignment of the material (12) to the surface (14). Additionally, the open stern (44) and the removable feature of the pressure applicator (20) facilitate alignment of the material (12) to the surface (14) independent of the engagement between the pressure applicator (20) and the material (12). Alternately stated, the pressure applicator (20) may be removed to allow alignment of the material (12) to the surface (14). In a preferred embodiment, this removal coupled with the open characteristic of the stern (44) facilitates alignment of the material (12) to the surface (14). After alignment of the material (12), the pressure applicator (20) may be repositioned in the material opening (26) in the pressure applicator orifice (28) to then used to apply pressure to the material (12) to apply the material (12) to the surface (14). As such the apparatus (10) facilitates proper placement of the material (12) without an obstructed view of the material (12) or complicated material (12) routing through the apparatus (10).
In a preferred embodiment the pressure applicator (20) may comprise a weighted cushioned material. The weighted cushion material may provide pressure for the application of the material (12) to the surface (14). The weighted cushion material facilitates this application of material when the surface (14) is uneven, due to the fact that the weighted cushion material may adapt to undulations and depressions in the surface (14) while still applying the proper pressure to the material (12) to apply to the surface (14). Alternately, the support element (22) may be comprised of weighted cushion material to conform to the imperfections in the surface (14) as the support elements (22) traverses the surface (14).
As seen in
The pressure applicator (120) includes end portions (130 and 132) that may be harder than the middle portion (131) of the pressure applicator (120). This variance in hardness facilitates a proper application of the material (12) to the surface (14). The middle portion (131), which may be described as a middle section (131) is preferably softer than the end portions (130 and 132). This make up allows the middle portion (131) to deform about imperfections in the surface (14) while still allowing the end portions (130 and 132) to maintain adequate contact between the material (12) and the surface (14) for proper application of the material (12) to the surface (14).
In a preferred embodiment, the middle portion (131) includes a hardness between 5 and 35 as measured by a Shore A Durometer, while the end portions (130 and 132) include a hardness between 10 and 70 as measured by a Shore A Durometer
In a most preferred embodiment, the middle portion (131) includes a hardness between 15 and 25 as measured by a Shore A Durometer, while the end portions (130 and 132) include a hardness between 20 and 50 as measured by a Shore A Durometer.
In other embodiments, the pressure applicator (100) may include end portions (130 and 132) and a middle portion (131) that may be independently rotatable. In one or more embodiments, applicator portions (130, 131, 132) may be separated and exhibit the same malleability.
The apparatuses (10 or 100) may be loaded and operated as follows. A roll (13) of material (12) may be placed on a material axle (24). Material guides (40) then may be positioned to properly place the roll (13) on the material axle (24), if needed. A portion of the material (12) may be gathered from the roll (13). This portion of material (12) may be properly aligned to the surface (14) to which it is to be applied.
Next the material axle (24) including the roll (13) of material (12) may be positioned in the material axle openings (26) of the first and second sides (16 and 18). Then the pressure applicator (20) may engage the material (12) such that it applies pressure to the material (12). Next the pressure applicator (20) may be positioned in the pressure applicator orifice (28) to secure the pressure applicator (20) in its proper position on the apparatus (10). The handle (50), which could be rotated away from this loading area during the aforementioned process, may then be rotated back to allow a user (not shown) of the apparatus (10) to impart horizontal movement to the apparatus (10).
This alignment of the material (12) and loading of the roll (13) may be facilitated by the open stern (44) and open top (38). This is due to the fact that visual confirmation of the alignment and placement of the material (12) may be facilitated by the open stern (44) while placement of the material axle (24) containing a roll (13) of material (12) may be facilitated by the open top (38).
One or more embodiments of the present invention are directed toward a method for applying a thermoset membrane (e.g., EPDM membrane) to a rooftop by employing the apparatus of one or more embodiments of this invention. According to one or more of these methods, a first membrane sheet is secured to a rooftop. This can be accomplished by employing mechanical fasteners including those that are conventional in the art. Once a first membrane is secured to the rooftop, the tape applicator of one or more embodiments of this invention can be positioned near an edge of the membrane at a location where it is desirable to apply the seam tape. Once positioned over a desired location on the membrane, the apparatus of the present invention can be employed to apply a seam tape to the first membrane by employing one or more of the operating procedures described herein. Once the seam tape has been applied to the first membrane, a second membrane may be positioned over the seam tape (i.e., overlapping the first membrane) and secured thereto by applying pressure to the top of the second membrane. As a result of practicing this method, a water impervious seam can be constructed between the membrane. In one or more embodiments, a primer may be applied to the first membrane prior to application of the seam tape. Likewise, a primer can be applied to the underside of the second membrane prior to contacting the second membrane with the seam tape.
Various modifications and alterations that do not depart from the scope and spirit of this invention will become apparent to those skilled in the art. This invention is not to be duly limited to the illustrative embodiments set forth herein.
This application claims the benefit of U.S. Provisional Application No. 60/742,546, filed Feb. 9, 2005, which is incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 60742546 | Feb 2005 | US |
