Land vehicles – Wheeled – Articulated vehicle
Reexamination Certificate
2001-08-07
2003-09-16
Lerner, Avraham (Department: 3611)
Land vehicles
Wheeled
Articulated vehicle
C280S491500
Reexamination Certificate
active
06619686
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of Invention
This invention relates to towbars that are used by one vehicle to tow another. More specifically the invention relates to a towbar that has a locking mechanism to retain the towbar in a folded position for storage when not in use.
2. Description of Related Art
Various towbars for vehicles have been designed that allow one vehicle to tow another. The towbars can be stored on the vehicle when not in use. U.S. Pat. No. 2,378,504, issued to Roos, discloses a towing device that can be tilted up when not in use. The hook of the bar is held to the hood of the vehicle by a strap that is placed around the bar. U.S. Pat. No. 2,880,016 issued to Peterson, discloses a combination grill guard and hitch. A coupler and bar are rotated upwardly toward the vehicle grill. A lock arm has to be manually pivoted allowing the bar to pass by. The lock arm is then manually lowered holding the drawbar in place. U.S. Pat. No. 4,509,769 issued to Weber, discloses a vehicle hitch. A coupler and bar are rotated upwardly toward the vehicle and a set screw is manually tightened to hold the bar in a stored position when not in use.
One problem with the prior art devices is that they require manual opening and closing of the lock or latch mechanism. When the bar is being lifted, it can be cumbersome and unwieldy for an operator to remove one hand from the bar and actuate the lock mechanism. Similarly the same problem occurs when the bar is being lifted. Another problem with the prior art devices is that the bar is not securely held by the lock or latch mechanism which leads to rattling and noise when the vehicle is driven.
What has long been needed is a towbar and lock mechanism that is easily locked and unlocked. Another long felt need is for a towbar and lock mechanism that securely retains the towbar so that it does not rattle or make noise when the vehicle is driven.
SUMMARY OF INVENTION
1. Advantages of the Invention
An advantage of the present invention is that it provides a towbar that is accessible for use and yet is readily secured for storage.
Another advantage of the present invention is that it provides a towbar that has a lock assembly.
A further advantage of the present invention is that it provides a towbar that can be folded away when not in use.
An additional advantage of the present invention is that it provides a towbar that has a spring loaded lock mechanism that self-engages in a locked position when rotated.
Yet another advantage of the present invention is that it provides a towbar with a lock that is easily released.
These and other advantages of the present invention may be realized by reference to the remaining portions of the specification, claims, and abstract.
2. Brief Description of the Invention
The present invention comprises a towbar for a vehicle. The towbar comprises a yoke and a drawbar rotatably connected to the yoke. A lock assembly is connected between the yoke and the drawbar. The lock assembly is adapted to be moved from a first position in which the drawbar is free to rotate and a second position in which the drawbar is retained to the yoke.
REFERENCES:
patent: 2378504 (1945-06-01), Roos
patent: 2880016 (1959-03-01), Peterson
patent: 3627352 (1971-12-01), Canole
patent: 3664687 (1972-05-01), Nutt, Jr. et al.
patent: 4073508 (1978-02-01), George et al.
patent: 4222583 (1980-09-01), Schillings
patent: 4273352 (1981-06-01), Jorgenson
patent: 4509769 (1985-04-01), Weber
patent: 4548423 (1985-10-01), Craven
patent: 4588323 (1986-05-01), Vollmer et al.
patent: 4768803 (1988-09-01), Hewitt et al.
patent: 5232240 (1993-08-01), Johnson
patent: 5503423 (1996-04-01), Roberts et al.
patent: 5765851 (1998-06-01), Parent
patent: 5873595 (1999-02-01), Hinte
patent: 5921699 (1999-07-01), Olson
patent: 6364337 (2002-04-01), Rowland et al.
patent: 6409201 (2002-06-01), Riehle
patent: 6460870 (2002-10-01), Moss
patent: 2002/0171225 (2002-11-01), Adair
Edwards Jerry
Heck Ryan A.
Ian F. Burns & Associates
Lerner Avraham
LandOfFree
Folding towbar and lock mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Folding towbar and lock mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Folding towbar and lock mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3112877