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:
Oct. 19, 1976
Filed:
Jun. 27, 1975
John D Goodlaxson, Colfax, IA (US);
The Maytag Company, Newton, IA (US);
Abstract
A drive system for a laundry apparatus including a torque sensing drive mechanism for determining the presence of washing fluid in the cavity of a rotary positive displacement pump by means of the different resistive torque responses of relatively full and empty pump cavities. A clutch mechanism joins two driving pulleys that are belt-connected to two driven pulleys on the transmission and pump units. The presence of washing fluid in the pump cavity effects separation of the driving pulleys and actuates only the pump unit. Absence of washing fluid in the pump cavity causes the driving pulleys to remain coupled and a centrifugal extraction operation is initiated through the transmission and spin clutch.