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:
Oct. 19, 1976
Filed:
May. 21, 1975
Richard P Grogan, Ontario, CA (US);
Rex C Cooprider, Hacienda Heights, CA (US);
William S Blake, Westminster, CA (US);
Diamond International Corporation, City of Industry, CA (US);
Abstract
A resiliently deformable diaphragm having a central domed portion surrounded by a marginal flange, has its flange clamped between opposing members of the pump housing whereby the central domed portion of the housing co-operates with one of the members to define a variable volume pump chamber. The convex side of the dome is received within a central opening in the other member and normally seats over and closes a vent port within said opening. An actuating lever fulcrumed on the housing has an arm movable upwardly through the said opening to deforming engagement with the diaphragm dome to alternately compress and to permit expansion of the dome. The inlet and outlet passages of the pump respectively extend from the pump chamber through the interfaces between the flange and the housing members and include inlet and outlet ports respectively controlled by the flange, recesses being provided in the interfaces at locations opposite the respective ports to permit deflection of portions of the flange so that they may function as inlet and outlet valves respectively.