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:
Feb. 19, 1980
Filed:
May. 22, 1978
Applicant:
Inventors:
Jack Brown, Union, NJ (US);
John A Herr, Garwood, NJ (US);
Wolfgang Jaffe, Roselle Park, NJ (US);
Wesley R Peterson, Bound Brook, NJ (US);
Assignee:
The Singer Company, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ; F04B / ;
U.S. Cl.
CPC ...
112225 ; 112302 ; 417413 ;
Abstract
A pump is disclosed having a housing with a recess therein, an elastomeric diaphragm stretched across said recess forming a pump cavity in which the medium being pumped is circulated, and inlet and outlet valves. An electronically controlled linear actuator is attached to the diaphragm within the pump cavity thereby allowing compactness in the construction of the pump and improved heat dissipation from the linear actuator. The pump fits within the frame of a sewing machine and creates an air vacuum for assisting in needle threading.