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. 11, 2000
Filed:
May. 11, 1999
Phillip M Edwards, Cherry Hill, NJ (US);
Robert J Meehan, Roslyn, PA (US);
Milton Roy Company, Ivyland, PA (US);
Abstract
A hydraulic refill valving apparatus can be removed from the front of a metering pump without requiring the entire displacement chamber to be removed from the pump drive mechanism. The valving apparatus separately mounts a mechanically actuated refill valve and a refill check valve such that they can be removed from the front of the pump with relative ease, leaving the displacement chamber connected to the drive mechanism with the sealing gasket therebetween. By separating the refill valve and refill check valve functions into two separate assemblies, the apparatus is made more reliable in that it is less susceptible to problems encountered with relatively high viscosity working fluid.