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:
Jan. 27, 1976
Filed:
May. 13, 1974
James C Solie, Owatonna, MN (US);
Owatonna Tool Company, Owatonna, MN (US);
Abstract
A three-way control valve for a single-acting cylinder or other type of motor in which a valve body has an inlet port, a tank port and a control port, with a pair of poppet-type check valves operable to block flow from the control port to either the inlet port or the tank port. A poppet valve member is operable to control flow between the inlet port and the tank port. Means are provided for operating the poppet valve member and the check valves to cause either advance, return or hold operations of the cylinder and with decompression means for bleeding-off the cylinder pressure prior to opening of one of the check valves to connect the control port to the tank port to reduce the amount of force required to open the latter check valve.