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. 27, 2000
Filed:
Jul. 28, 1998
Roney A Reid, Boardman, OH (US);
Anthony J Progar, Jr, Paris, PA (US);
Marsh Bellofram Corporation, Newell, WV (US);
Abstract
The invention relates to a pressure regulator for propane and liquefied petroleum with a balanced valve. An inlet port (10) receives supply pressure and an outlet port (14) receives output pressure. A threaded shaft (28) engages a pocket in a spring button (20). A diaphragm assembly (22) engages the bottom of a range spring (24). A T-handle (26) is rotated to move the spring button (20) downward, compressing the range spring (24) which creates a net downward force on the diaphragm assembly (22). A valve mechanism (12) includes a supply seat (30), a supply valve (34), a balance piston (32), and a pintle interconnection (36). The supply valve (34) moves off of the supply seat (30) as the downward force is exerted on the diaphragm assembly (22), and supply pressure fills the outlet port (14). An aspirator tube (39) transfers supply pressure from the outlet port (14) to the diaphragm assembly (22) resulting in a net upward force on the diaphragm assembly (22) as a function of outlet pressure times diaphragm assembly (22) area. A balanced diaphragm (42) and an o-ring (44) create a redundant seal and prevent the effect of supply pressure on output pressure by equating the net upward and downward force on the valve mechanism (12) due to supply pressure. The o-ring (44) dampens unwanted valve (12) and diaphragm assembly (22) oscillation.