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:
Jun. 03, 1980
Filed:
Jan. 27, 1978
Applicant:
Inventors:
Werner Hafner, Leimen, DE;
Erich Habel, Furth, DE;
Assignee:
Firma Carl Freudenberg, Weinheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
92243 ; 92248 ;
Abstract
A piston for use in pneumatic cylinders includes a tubular support with flange-like parts, a reinforcement ring received in the support and having a groove on its outside circumference, a guide ring rigidly mounted in the groove, and angular packing washers pre-vulcanized onto the reinforcement rings on both sides of the guide ring.