# US 4,392,660 A · Safety bar

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- Number: US 4,392,660 A
- Document ID: US4392660A
- Status: Granted
- Kind: A
- Application number: 06/182,505
- Filed: 1980-08-29
- Granted: 1983-07-12
- Earliest claimed: 1980-08-29
- Inventors: James V. Mason; Mancil C. Fisher
- Web page: https://patentgrep.com/patent/US4392660A

## CPC

- B60J 5/0487: {simplified doors related to cabins of, e.g. golf carts, tractors, jeeps, cranes, forklifts, etc.}
- B60R 21/02: Occupant safety arrangements or fittings {, e.g. crash pads (seat belts with crash pads B60R22/14; removable children's seats having a front guard or barrier B60N2/2839)}
- B60R 2021/0074: {Utility vehicles}
- B60R 2021/028: {Means preventing passenger from falling out of vehicles}
- B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05)
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

The invention is a safety bar for use in the cab of large earth moving equipment and which extends across the entryway of the cab. The safety bar is pivotally connected to the floor and has vertical freedom of rotation across the entryway. When in place across the entryway, the safety bar has a horizontal member connected to a vertical support member. The vertical member is attached to a hinge base plate adapted to allow vertical freedom of rotation. A latch is provided on the horizontal member to secure the horizontal member to a latch bar to block the entryway.

## Claims

### Claim 1

A safety device for preventing inadvertent passage through the entryway of a vehicle comprising:
a generally inverted L-shaped safety bar consisting of a horizontal means adapted to extend across said entryway, and a vertical means, said horizontal means being fixedly attached at one end thereof to an upper portion of said vertical means to provide an open area below said horizontal means;
means for mounting a lower end of said vertical means to said vehicle for pivotal movement of said safety bar transverse to said entryway;
said mounting means comprising vertically extending members having holes for cooperating with holes in said vertical means;
wherein said vertical means comprises two spaced vertical elements, each of said vertical elements being mounted to one of said vertically extending members for pivotal movement; and
means for latching said bar to retain it in a position across said entryway.

### Claim 2 (depends on 1)

The safety device of claim 1 wherein the two vertical elements are parallel.

### Claim 3 (depends on 1)

The safety device of claim 1 wherein said latching means includes a latch bar adapted to be attached to said vehicle and provided with a recess to receive said horizontal means.

### Claim 4 (depends on 3)

The safety device of claim 3 wherein said latch bar extends transversely to said horizontal means and is mounted on an upright support adapted to be mounted on the vehicle.

### Claim 5 (depends on 3)

The safety device of claim 3 wherein said latching means includes means on the horizontal means operatively associated with said recess to secure said horizontal member to said latch bar.

### Claim 6 (depends on 5)

The safety device of claim 5 wherein said recess is provided with a lock slot and said latching means on the horizontal means comprises a retractable sleeve and a locking member extending transversely to said horizontal means adapted to be received by said lock slot, and a spring to bias said sleeve towards said latch bar.

### Claim 7 (depends on 1)

The safety device of claim 1 wherein said horizontal means includes a reinforcing member.

### Claim 8

A safety device for preventing inadvertent passage through the entryway of a vehicle comprising:
a generally inverted L-shaped safety bar consisting of a horizontal means adapted to extend across said entryway, and a vertical means, said horizontal means being fixedly attached at one end thereof to an upper portion of said vertical means to provide an open area below said horizontal means;
means for mounting a lower end of said vertical means to said vehicle for pivotal movement of said safety bar transverse to said entryway; and
means for latching said bar to retain it in a position across said entryway;
wherein said latching means includes a latch bar adapted to be attached to said vehicle and provided with a recess,
and means on the horizontal means operatively associated with said recess to secure said horizontal member to said latch bar; and
wherein said recess is provided with a lock slot and said latching means on the horizontal means comprises a retractable sleeve and a locking member extending transversely to said horizontal means adapted to be received by said lock slot, and a spring to bias said sleeve towards said latch bar.