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:
Nov. 23, 1999
Filed:
Oct. 02, 1997
Applicant:
Inventor:
Peretz Rosenberg, 30046 D.N. Haamakim, IL;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137-1 ; 13762414 ; 137211 ;
Abstract
A cyclically-operated hydraulic device includes: an air-liquid chamber which, during a first part of each cycle is partially filled with a liquid while air in the chamber is compressed, and during a second part of each cycle discharges under pressure a portion of said liquid from the chamber; and an air-replenishing device which inlets a small quantity of air into the air-liquid chamber during each cycle to replenish air contained in the liquid discharged under pressure.