U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Reverse shift mechanism for power transmission unit

Patent 4237745 Issued on December 9, 1980. Estimated Expiration Date: Icon_subject April 19, 1999. 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.

Patent References

1471730

2911856

Inventors

Assignee

Application

No. 06/031397 filed on 04/19/1979

US Classes:

74/339, Meshing assisters74/473.1Transmission control

Examiners

Primary: Husar, C. J.
Assistant: McKenzie, Frank

Attorney, Agent or Firm

International Class

F16H 63/30 (20060101)

Foreign Application Priority Data

1978-08-02 JP

Abstract

A reverse shift mechanism for a power transmission unit comprises a plurality of fork shafts slidably supported from a transmission casing in parallel with each other to be shifted by an operator's shift lever, a shift head fixed to one of the fork shafts, a shift arm rotatably supported by the shift head at its intermediate portion and being pivoted at its lower end on a portion of the transmission casing, and a shift fork slidably mounted on another one of the fork shafts and being rotatably supported by the upper end of the shift arm, the shift fork receiving thereon a reverse idler gear to shift it toward and away from a reverse drive gear and a reverse output gear.

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