Rear mounted operator restraint bar

Details Rear mounted operator restraint bar Rear mounted operator restraint bar

1999-07-14

2001-10-09

Swann, J. J. (Department: 3611)

Land vehicles

Wheeled

Attachment

C280S753000, C180S268000

Reexamination Certificate

active

06299207

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to loader operator restraint bars for mounting in skid steer loader cabs, wherein the bar is mounted on the rear wall and the front cross member moves upwardly to a non-restraint position and then downwardly to a position where it extends across the lap of an operator sitting on the seat. The restraint bar position can be sensed for use with an operating interlock for the loader such that when the restraint bar is raised, operation of at least some function of the loader is prevented.
U.S. Pat. No. 4,397,371 illustrates an operator restraint system which has a restraint member that is mounted at the forward side of an operator's cab, and is tied into a control system of the loader.
Rear mounted restraint systems also have been utilized, for example, those shown in U.S. Pat. Nos. 5,050,700 and 5,383,532.
The existing rear mounted restraint bars are relatively complex in mounting, and a simplified, easily installed and easily operated restraint for an operator is desired.
SUMMARY OF THE INVENTION
The present invention relates to a rear mounted operator restraint bar or seat bar, that mounts on the rear wall of an operator cab of a skid steer loader, where the mounting is out of the way and leaves the front cab area unobstructed. The restraint bar is a U-shaped member that has a pair of mounting brackets for side legs on the rear wall, each with a self-contained spring. The bracket springs will urge the bar to a restraint position after it has been lowered near such position, and when lifted by the operator, will hold the bar is a release position so that the operator can move in and out of the cab.
In the restraint position, restraint bar mounting one bracket can mount a sensor that will provide a signal indicating that the restraint bar is in a selected position, and couple the signal into a control system so that the loader drive and operating systems are disabled unless the restraint bar is down.
Various other serial interlocks can be used with the restraint bar sensor desired.


REFERENCES:
patent: 1597491 (1926-08-01), Traver
patent: 2755101 (1956-07-01), Budde
patent: 3453026 (1969-07-01), Paes et al.
patent: 3494633 (1970-02-01), Malloy
patent: 3640572 (1972-02-01), Doehler
patent: 3888329 (1975-06-01), Monaghan
patent: 3899042 (1975-08-01), Bonar
patent: 3993157 (1976-11-01), Schulte
patent: 4008626 (1977-02-01), Schulte et al.
patent: 4388980 (1983-06-01), Vig et al.
patent: 4391344 (1983-07-01), Weber et al.
patent: 4392660 (1983-07-01), Mason et al.
patent: 4397371 (1983-08-01), Lynnes et al.
patent: 4480713 (1984-11-01), Macht et al.
patent: 4579191 (1986-04-01), Klee et al.
patent: 4603877 (1986-08-01), Espinoza et al.
patent: 4955452 (1990-09-01), Simonz
patent: 5050700 (1991-09-01), Kim
patent: 5100173 (1992-03-01), Kudler
patent: 5129478 (1992-07-01), Suenaga et al.
patent: 5383532 (1995-01-01), Shonai et al.
patent: 5454596 (1995-10-01), Dirck
patent: 5481909 (1996-01-01), Deutsch et al.
patent: 5664637 (1997-09-01), Ohta et al.
patent: 5871063 (1999-02-01), Young
patent: 5944135 (1999-08-01), Blackburn et al.
patent: 2 328 268 A (1999-02-01), None

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