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:
Aug. 09, 1994
Filed:
Apr. 29, 1993
Applicant:
Inventors:
Kennth E Lehrke, Maple Grove, MN (US);
Neal A Werner, Plymouth, MN (US);
Assignee:
Graco Inc., Golden Valley, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417415 ; 417234 ;
Abstract
An electric drive pump is designed for use in hazardous environments. The assembly is housed, including the motor controller and power supply, in an explosion proof housing. The rotary output of the motor has a cam thereon which is bracketed by a pair of followers attached to the reciprocating pump. If desired, a polytetrafluoroethylene stick is spring biased against one of the followers so as to provide lubrication to the assembly.