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:
Jan. 02, 1996
Filed:
Nov. 07, 1994
Richard G Powers, Overland Park, KS (US);
William R Wright, Overland Park, KS (US);
Marlen Research Corporation, Overland Park, KS (US);
Abstract
A dual-piston pump apparatus includes a pair of reciprocating sleeves within which a pair of reciprocating pistons are disposed. The pistons and sleeves are each supported on a frame for independent reciprocating movement along a line angled relative to horizontal by an angle of less than about 60.degree.. The apparatus also includes a piston construction including a removable face which permits the piston to be broken down for cleaning. Each piston is normally restricted by a stop from extension beyond the end of the corresponding sleeve, but an actuator is provided for freeing the piston relative to the sleeve so that the piston may be extended beyond the sleeve and the sleeve may be withdrawn from a pump chamber of the apparatus.