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. 01, 2002
Filed:
Mar. 24, 2000
Keitaro Yonezawa, Kobe, JP;
Tsutomu Shirakawa, Kobe, JP;
Kabushiki Kaisha Kosmek, Hyogo, JP;
Abstract
Two hydraulic chambers ( ),( ) within a slide ( ) communicate with an overload protecting valve ( ) through relief passages ( ),( ). Check valves ( ),( ) and discharge valves ( ),( ) are arranged in series with each other in the respective relief passages ( ),( ). When either of the two hydraulic chambers ( ),( ) has a pressure not less than a set overload pressure, the overload protecting valve ( ) opens to relieve pressurized oil within the hydraulic chamber ( ) to an exterior area via a restricting passage ( ) of one discharge valve ( ) and the overload protecting valve ( ). This switches over the two discharge valves ( ),( ) to a discharging condition substantially at the same time to communicate the hydraulic chambers ( ),( ) with a discharge port (R).