Lift truck parking brake

Patent 5113977 Issued on May 19, 1992. Estimated Expiration Date:

December 18, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1331513

3698504

3907138

Hand brake apparatus for hand trucks
Patent #: 4819767
Issued on: 04/11/1989
Inventor: Laird

Slider Patent #: 4838578
Issued on: 06/13/1989
Inventor: Baxter

Inventors

Assignee

Strato-Lift, Inc.

Application

No. 629455 filed on 12/18/1990

US Classes:

188/69, Positive lock188/21, Truck188/22, Two-wheel188/31, Positive lock280/47.27With toe (e.g., warehouse truck)

Examiners

Primary: Oberleitner, Robert J.
Assistant: Schwartz, Christopher P.

Attorney, Agent or Firm

Dann, Dorfman, Herrell & Skillman

Foreign Patent References

150387 BE 08/12/2012
522260 FR 03/12/2012

International Class

B62C 007/02

Abstract

An improved parking brake is provided for use on a movable machine, in particular a lift truck with an elevating platform. A pin-type brake is provided with a buffered slide mechanism which engages and disengages a slotted disc mounted on a wheel to brake the machine while not in use. The buffered slide mechanism provides a delay for the slide mechanism when the slide and apertures in the slotted disc are not in precise alignment, and automatically engages or disengages the brake when the slide and disc apertures are in alignment. The brake also reduces wear on the internal cylinder components by providing a slide supported at its ends by guides and pivotally linked to the cylinder mechanism.