1. Field of the Invention
The present invention relates to the field of ratchet strap apparatus typically used in tying down cargo and other things and for tensioning purposes. More particularly, the present invention relates to an improved ratchet strap apparatus including an easily attachable cargo strap.
2. Background
Ratchet strap apparatus are today commonly used, for example, in tying down cargo and loads on vehicles, trailers, etc., and for tensioning purposes as needed or desired. Ratchet strap apparatus are, for example, shown and described in U.S. Pat. No. 7,464,915; U.S. Pat. No. 6,654,987; U.S. Pat. No. 6,547,218; U.S. Pat. No. 6,195,848; and, U.S. Pat. No. 4,199,182. These apparatus essentially include a mechanism having a wind up drum rotatably mounted between two walls, and a handle engaging and rotatably driving the drum. A flat tensioning strap is selectively wound onto the drum and unwound therefrom. Another flat strap referred to herein as a cargo strap is also secured to the apparatus. The terminal ends of the straps include hooks whereby the strap ends can be hooked onto each other, the cargo/load or parts of the vehicle, trailer, etc. By winding the tension strap onto the drum, the straps are placed in tension and the cargo/load is thereby secured or tension is placed as needed or desired on the components whereat the hooks are affixed.
In most ratchet strap apparatus, the cargo strap is relatively short and is permanently affixed to the ratchet mechanism. The tensioning strap is relatively longer and must be inserted through a slot in the drum, pulled taught and then, by rotatably driving the drum, caused to become wound around the drum and thereby also become frictionally engaged and tensioned. As can be appreciated, it can be difficult to simultaneously hook the cargo strap at a desired location, hook the tensioning strap at another desired location, insert the tensioning strap through the drum slot while maintaining or drawing it taught and then grasping and moving the handle for rotatably driving the drum and tensioning the tension strap.
The ratchet strap apparatus of U.S. Pat. No. 6,654,987 and U.S. Pat. No. 4,199,182 make the use thereof easier by essentially providing a mechanism that includes an inboard pin and an outboard pin on the ratchet strap apparatus for more easily attaching the cargo strap. The cargo strap is selectively attachable to the mechanism by bending it into a loop with a slack end on one side thereof and a cargo engagement end on the other, locating the outboard pin through the loop and both the slack end and cargo engagement end around the inboard pin. The slack end is sandwiched between the inboard pin and the cargo engagement end whereby tension on the cargo engagement end frictionally secures the slack end between the cargo engagement end and the inboard pin. The tensioning strap may then be wound around the drum using the ratchet handle for tensioning.
However, there remain shortcomings and drawbacks in such ratchet strap apparatus and in the securement of the cargo strap to the mechanism with the inboard and outboard pins, and a need exists for an improved ratchet strap apparatus wherein the cargo strap is relatively more easily selectively attachable to the apparatus using inboard and outboard pins.
In one form thereof, the present invention is directed to a ratchet strap apparatus including a tensioning strap adapted to be tensioned such as with a wind up drum rotatably mounted between two walls, a handle selectively engaging and rotatably driving the drum and wherein the tensioning strap is adapted to be wound onto the drum and unwound therefrom. An inboard pin and an outboard pin are secured to the apparatus. A cargo strap is selectively attachable to the apparatus by bending into a loop with a slack end on one side thereof and a cargo engagement end on the other, locating the outboard pin through the loop and both the slack end and cargo engagement end around the inboard pin. The slack end is sandwiched between the inboard pin and the cargo engagement end whereby tension on the cargo engagement end frictionally secures the slack end between the cargo engagement end and the inboard pin. The outboard pin is secured to one side wall and extends to a terminal end. An opening is provided between the terminal end and the other side wall. The outboard pin is located through the loop by inserting the terminal end therethrough.
Preferably, a stop member is provided on the outboard pin terminal end projecting beyond an outer surface of the outboard pin and preventing inadvertent withdrawal from the loop while the loop is engaged over and on the outboard pin. A U-shaped member can be provided having a base section and integrally formed first and second legs extending therefrom, whereby the first leg extends between the ratchet strap two walls and forms the inboard pin, the base section is secured to one of the walls and the second leg forms the outboard pin. The U-shaped member base section and the first and second legs, in cross sectional thickness, preferably have a width extending generally longitudinally along the ratchet strap walls and a height extending generally transverse thereto, and wherein the width is greater than the height. Yet more preferably, the two walls can be formed by bending a sheet into a U-shape with the two walls extending from a base portion, whereby a bridge is provided in the base between the walls forming the inboard pin and whereby an arm is provided in the base extending from one of the walls and forming the outboard pin. Between the bridge and arm, the one wall and part of the base portion can form an L-shaped beam for supporting the arm.
In another form thereof, the present invention is directed to a ratchet strap apparatus including a tensioning strap adapted to be tensioned such as with a wind up drum rotatably mounted between two walls, a handle selectively engaging and rotatably driving the drum and wherein the tensioning strap is adapted to be wound onto the drum and unwound therefrom. An inboard pin and an outboard pin are secured to the apparatus. A cargo strap is selectively attachable to the apparatus by bending into a loop with a slack end on one side thereof and a cargo engagement end on the other, locating the outboard pin through the loop and both the slack end and cargo engagement end around the inboard pin with the slack end being sandwiched between the inboard pin and the cargo engagement end. Tension on the cargo engagement end frictionally secures the slack end between the cargo engagement end and the inboard pin. The outboard pin is secured between the side walls. The side walls are each provided with a saddle whereon the inboard pin is selectively seated extending between the side walls. The cargo strap is selectively attachable to the apparatus by wrapping around the outboard pin and thereby bending into a loop and locating the outboard pin through the loop, and placing the inboard pin on the side walls saddles with the slack end and cargo engagement end therearound. Preferably, stop members are provided on the inboard pin terminal ends projecting beyond an outer surface of the inboard pin for engaging the side walls and preventing undesirable axial sliding of the inboard pin while the cargo strap slack end and engagement end extend therearound.
In yet another form thereof, the present invention is directed to a ratchet strap apparatus including a tensioning strap adapted to be tensioned such as with a wind up drum rotatably mounted between two walls, a handle selectively engaging and rotatably driving the drum and wherein the tensioning strap is adapted to be wound onto the drum and unwound therefrom. An inboard pin and an outboard pin are secured to the apparatus. A cargo strap is selectively attachable to the apparatus by bending into a loop with a slack end on one side thereof and a cargo engagement end on the other, locating the outboard pin through the loop and both the slack end and cargo engagement end around the inboard pin. The slack end is sandwiched between the inboard pin and the cargo engagement end whereby tension on the cargo engagement end frictionally secures the slack end between the cargo engagement end and the inboard pin. The outboard pin is selectively fixedly secured to one of the side walls. The other of the side walls includes a saddle whereon the outboard pin is selectively seated. The outboard pin is located through the loop by removing the outboard pin from the saddle, inserting a terminal end thereof through the loop and placing the outboard pin on the saddle.
Preferably, the selective fixed securement comprises an opening through the one side wall wherethrough the outboard pin is slidingly received and whereby, when the outboard pin is removed from the saddle, the outboard pin is selectively slidable through the opening. Stop members may be provided on the outboard pin terminal ends projecting beyond an outer surface of the outboard pin for engaging the side walls and preventing undesirable axial sliding of the outboard pin and preventing inadvertent withdrawal from the loop while the loop is engaged over and on the outboard pin.
In yet a further form thereof, the present invention is directed to a ratchet strap apparatus including a tensioning strap adapted to be tensioned such as with a wind up drum rotatably mounted between two walls, a handle selectively engaging and rotatably driving the drum and wherein the tensioning strap is adapted to be wound onto the drum and unwound therefrom. An inboard pin and an outboard pin are secured to the apparatus. A cargo strap is selectively attachable to the apparatus by bending into a loop with a slack end on one side thereof and a cargo engagement end on the other, locating the outboard pin through the loop and both the slack end and cargo engagement end around the inboard pin, the slack end being sandwiched between the inboard pin and the cargo engagement end whereby tension on the cargo engagement end frictionally secures the slack end between the cargo engagement end and the inboard pin. An opening is provided through one side wall wherethrough the outboard pin is slidingly received. The other of the side walls includes a saddle whereon the outboard pin is selectively seated. The outboard pin is located through the loop by removing the outboard pin from the saddle, inserting a terminal end thereof through the loop and placing the outboard pin on the saddle.
Preferably, stop members are provided on the outboard pin terminal ends projecting beyond an outer surface of the outboard pin for engaging the side walls and preventing undesirable axial sliding of the outboard pin and preventing inadvertent withdrawal from the loop while the loop is engaged over and on the outboard pin. The two walls may be formed by bending a sheet into a U-shape with the two walls extending from a base portion and whereby a bridge is provided in the base between the walls forming the inboard pin. An edge of the bridge is preferably bent over and forms a rounded surface whereat the slack end and cargo engagement end extend therearound. An edge of each of the side walls can be bent forming an L-shaped structural beam.
The above mentioned and other features of this invention, and the manner of attaining them, will become more apparent and the invention itself will be better understood by reference to the following description of the embodiments of the invention taken in conjunction with the accompanying drawings, wherein:
Corresponding reference characters indicate corresponding parts throughout several views. Although the exemplification set out herein illustrates embodiments of the invention, in several forms, the embodiments disclosed below are not intended to be exhaustive or to be construed as limiting the scope of the invention to the precise forms disclosed.
Referring initially to
A cargo strap 32 is also provided and, at its terminal end 33, is provided with a steel hook 34. At its other end 31, cargo strap 32 is selectively attachable to the ratchet strap apparatus 10 with an attachment mechanism 36 as described herein below. Cargo strap 32 is similarly generally flat and is made of nylon or other known and customary suitable material.
Wind up drum 14 is rotatably mounted between walls 18 and 20. A ratchet mechanism generally designated by the numeral 22, well known to those skilled in the art and which is commonly used in prior ratchet strap apparatus, including a handle 24, release 26, catch 28 and toothed members 30, is provided for selectively winding the tensioning strap 12 onto the wind up drum 14 and for selectively unwinding the tensioning strap 12 therefrom. Accordingly, ratchet strap apparatus 10 may be used by securing the hooks 16, 34 as needed or desired, pulling the cargo strap 32 tight and attaching its end 31 thereto and, using the ratchet mechanism 22, rotatably driving the wind up drum 14 and winding the tensioning strap end 11 onto the wind up drum 14 for thereby tensioning the straps 12, 32. The tension is released using the ratchet mechanism 22 and rotatably driving the wind up drum 14 in the opposite direction and unwinding the strap 12. The end 31 of the cargo strap 32 is then detached therefrom.
The cargo strap end 31 is selectively attachable to the apparatus 10 with an attachment mechanism generally designated by the numeral 36. Attachment mechanism 36 includes an inboard pin 38 and an outboard pin 40 secured to the apparatus 10. As best seen in
As can be appreciated, wrapping the cargo strap end 31 around the outboard pin 40 and the inboard pin 38 in the attachment position as described herein above can be cumbersome and time-consuming. To this end, pursuant to the principles of the present invention, the placement of the cargo strap end 31 around the outboard pin 40 and the inboard pin 38 is made substantially easier while maintaining the attachment integrity.
Referring now more particularly to the embodiment shown in
Preferably, both in this and the other embodiments described herein below, side walls 18, 20 are formed of thick sheet metal, by stamping and bending operations, into a U-shape with a base section/portion 54 and the side walls 18, 20 extending perpendicular therefrom. As best seen in
In the embodiment shown in
In the embodiment shown in
Turning now to the embodiment of
The cargo strap 32 is attached to the attachment mechanism 36 of this embodiment by wrapping the strap end 31 around the outboard pin 40 and thereby bending the cargo strap 32 and forming the loop 42 therearound. After thereby locating the outboard pin 40 through the loop 42, the loop slack end 44 and engagement end 46 are placed adjacent one another and the inboard pin 38 is placed on and seated in the side walls saddles with both the slack end 44 and engagement end 46 extending through the inboard opening 52. Hence, the slack end 44 and engagement end 46 are placed around the inboard pin 38. The tension on the cargo strap 32 in the direction of arrow A creates a force into the saddle cutouts 84 thereby maintaining the inboard pin 38 seated therein. The stop members 88 prevent undesirable axial sliding of the inboard pin 38 while the slack end 44 and engagement end 46 extend therearound.
Referring now to the embodiment of
The outboard pin 40 can take the form of a rod or bolt 94 which is similar to rod or bolt 86 and including stop members 96 at each terminal end thereof such as a head or cotter pin. The side wall 18 is provided with a saddle cutout 98 whereon the outboard pin 40 may be selectively seated. The outboard pin 40 in this embodiment is selectively fixedly secured to the side wall 20 such as by a hinge mechanism or a hole/opening 100 slightly larger than the bolt 94 whereby bolt 94 can both axially slide therethrough as well as hingedly pivot in and out of the saddle 98.
Accordingly, by unseating outboard pin 40 from the saddle 98 and/or sliding axially through hole 100, an opening similar to opening 50 of the embodiment of
In the embodiment of
While this invention has been described as having an exemplary design, the present invention may be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles.
This is a divisional of and claims priority of application Ser. No. 13/674,681 filed Nov. 12, 2012, the disclosure of which is incorporated herein by reference.
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Entry |
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Written Opinion of the International Searching Authority in related PCT/US2013/069424. |
Number | Date | Country | |
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20160129828 A1 | May 2016 | US |
Number | Date | Country | |
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Parent | 13674681 | Nov 2012 | US |
Child | 14988025 | US |