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. 20, 1976
Filed:
Aug. 02, 1974
Bayard G Gardineer, Patterson, NY (US);
Hugh A Panissidi, Peekskill, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A miniature piston assembly composed of an elongated cylinder containing a piston head which may be displaced in response to digital hydraulic signals or otherwise and which is arranged to provide self-snubbing without requiring check valves. In the side wall of the cylinder are one or more ports spaced from one or more of the distal ends of the cylinder by a predetermined distance. When the piston is in juxtaposition with a port and approaching the proximate end of the cylinder, the cylinder and the piston define an annular clearance space of ever increasing length and fluid impedance for snubbing the motion of the piston with respect to the cylinder.