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. 06, 1989
Filed:
Mar. 21, 1988
Robert L Morse, Adrian, MI (US);
Tecumseh Products Company, Tecumseh, MI (US);
Abstract
A pressure relief valve for a hermetically sealed reciprocating piston compressor is made in which a bore in a compressor cylinder head defines the valve body. Valve components are introduced into the bore through a valve opening on the bottom surface of the cylinder head. A discharge pressure chamber in the cylinder head also has a discharge pressure opening on the bottom surface. A path is provided between the valve opening and the discharge pressure opening, when the compressor is assembled, by means of a duct in a valve plate interposed between the cylinder head and a compressor crankcase. Also disclosed is a method for assembling the pressure relief valve in a cylinder head, whereby the valve components are temporarily retained within the bore by a washer-shaped soft metal valve seat that is compressed and expanded into an annular undercut or recess in the bore located adjacent to the bottom surface of the cylinder head. Upon final assembly of the cylinder head to the crankcase, the valve seat and other valve components are positively retained within the bore.