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. 25, 1989
Filed:
Aug. 08, 1988
Gary C Polk, Eden Prairie, MN (US);
Steve A Larson, Stacy, MN (US);
Ronald E Albrecht, Crystal, MN (US);
Power Flo Products Corp., Minneapolis, MN (US);
Abstract
A pressure washer according to the preferred teachings of the present invention is disclosed including a pump driven by a gear reduced, high speed, series universal motor supported in a housing by a switch housing. The motor is stopped and started by a pressure actuation switch to remove the necessity of an unloader valve. A valve assembly is provided which includes provisions for allowing or for preventing weepage through the pump and for relieving excessive pressure. The housing is formed of identical, non-mirror image housing halves which are interconnected end for end. Pairs of ribs upstand from the inner surface of the housing halves, with the first of the pair of ribs of the first housing half interacting with the second of the pair of ribs of the second housing half to engage the internal components while the second of the pair of the first housing half and the first of the pair of the second housing half not interfering with the internal components. The switch housing interacts with abutting ribs of the interconnected first and second housing halves to create an air baffle for dividing the housing into hot and cold compartments, with the electrical components of the washer located in the hot compartment and the water components of the washer located in the cold compartment. The switch housing includes a key slot which clamps the pressure line to a nipple on the switch and which holds the switch in the switch housing protected from the elements by the motor supported thereon.