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:
Dec. 26, 2000
Filed:
Sep. 01, 1998
Donald G Gruett, Manitowoc, WI (US);
Michael Wech, Two Rivers, WI (US);
Oil-Rite Corporation, Manitowoc, WI (US);
Abstract
A single-piece piston and drive assembly for use in a motor-actuated pump to meter a predetermined amount of lubricant or other liquid. The drive assembly includes a rotatable drive shaft, an eccentric cam insert, a cam rod, and a rocking beam. The rocking beam is coupled to the piston, the cam rod shaft, and a biasing mechanism. When the drive shaft is rotated, movement of the cam rod shaft causes the rocking beam to pivot and move the piston along a stroke to dispense the liquid. The piston operates in association with a flow adjustment stem that regulates the amount of liquid metered by the pump, and a valve assembly for evacuating the liquid from the pump chamber into and through an outlet fitting. Also provided is a flow volume indicator for use in a pump for indicating the amount of liquid being discharged. The flow volume indicator has a main body with an annular side wall, flexible base wall, and a knobbed pointer that is inserted into a bore of the pump body and coupled to the flow adjustment stem. Movement of the flow adjustment stem causes the knobbed end of the pointer to move and the base wall to flex.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile