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:
Jul. 17, 1984
Filed:
Feb. 22, 1982
James B Black, Roscoe, IL (US);
Twin Disc, Incorporated, Racine, WI (US);
Abstract
A propulsion transmission for a ship having a reversibly driven propeller shaft with a fixed pitch propeller and a torque converter of the single stage and fixed housing type for driving the propeller in the reverse direction. A planetary gear system is provided for driving the ship in a forward direction and a disengageable friction plate type brake is connected between the transmission housing and the planetary gear system and for forward drive. The brake is engaged to anchor a portion of the planetary gear system to drive said propeller shaft in a forward direction. The brake is disengaged when the torque converter is driving the propeller shaft in the reverse direction. One embodiment of the invention also includes a friction plate type clutch connected between the planetary gear system and the propeller shaft for transmitting power to the propeller shaft in a forward direction when the brake is disengaged. The clutch and brake are concentrically located with respect to one another in an axially compact arrangement.