The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1981
Filed:
Jun. 28, 1979
Joseph B Snoy, Rockford, IL (US);
Twin Disc, Incorporated, Racine, WI (US);
Abstract
A power transmission for tractors or the like and having change speed gear mechanism and also having a power take-off shaft for driving auxiliary equipment. A hydraulically actuated clutch is utilized in the transmission for selectively engaging various gear ratios. A hydraulically actuated brake is provided for disconnecting the drive shafts and locking the power take-off to the transmission housing. Operating control valve means are provided for controlling the power take-off brake and a hydraulic detent is provided for the valve. The power take-off shaft is controlled by a modulatable clutch of the duplex type which enables the operator to modulate the speed of the power take-off shift and automatically insures that the power take-off shaft is locked and the power take-off brake is disengaged. The control valve for the power take-off brake includes a hydraulic detent that can lock the operator shifted control valve in the clutch operative position.