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:
Feb. 23, 1982
Filed:
Jan. 09, 1980
George R Aschauer, Racine, WI (US);
Twin Disc, Incorporated, Racine, WI (US);
Abstract
A low noise level, rapidly reversible propulsion system for a submarine or other vessel comprises a non-reversible adjustable speed prime mover, a reversible drive mechanism driven by the prime mover and including a fluid-cooled torque converter and speed reduction apparatus, an energy-dissipating load selectively connectable to the reversible drive mechanism, and a propeller driven by the reversible drive mechanism. Assuming forward submarine travel, rapid direction reversal is achieved by slowing the prime mover to idle, connecting the load to dissipate kinetic energy from the reversible drive mechanism and propeller, reversing the reversible drive mechanism when the system comes to slow speed or to rest to permit propeller rotation caused by forward submarine travel to drive the drive mechanism and torque converter in reverse, disconnecting the load, and increasing the speed of the prime mover to stop and then reverse the propeller and the direction of submarine travel, with the fluid-cooled torque converter dissipating in the form of heat the energy produced in bringing the propeller and submarine to a stop.