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:
Sep. 10, 1985
Filed:
Dec. 16, 1983
Dennis E Swanson, Buffalo, MN (US);
Robert D Lerum, Maple Grove, MN (US);
Other;
Abstract
A peristaltic-type pump having an intake which may be conveniently connected to a liquid coating source includes an impeller having a pair of rollers. Rotation of the impeller causes the rollers to progressively compress a length of tubing in the pump. This compression creates suction to draw the coating material into the pump and pressure to drive a flow of coating to a handle attached to an applicator. The handle includes flow control devices which may be selectively operated to supply coating to the applicator only as required. During periods of non-flow the coating pressure is sensed to deactivate the pump when the pressure exceeds a preselected limit. Deactivation of the pump saves energy and prolongs a life of the pump.