Title: Plural range pressure regulator construction or the like and the method of making the same or the like

Abstract: A plural range pressure regulator construction having a housing provided with an inlet and an outlet separated by a valve seat that is controlled by a valve member that is interconnected to a flexible wall carried by the housing. Biasing means are carried by the housing for acting on one side of the wall to tend to move the wall in one direction relative to the housing, the biasing means comprising a plurality of separate spring means each acting on the wall to provide one pressure range for the pressure regulator construction. The housing has a storage space for storing one of the spring means so that the same will not act on the wall whereby the remaining spring means acting on the wall will provide another pressure range for the pressure regulator construction.

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Inventors: Genbauffe, Francis S. (Irwin, PA, US)

Application Number: 470435
Filing Date: 1974-05-16
Publication_date: 1976-02-10
Assignee: Robertshaw Controls Company (Richmond, VA)
Primary Class(es): 29/890.124 29/436, 29/454, 267/168
Other Classes:
US Patent Ref:

2478040	Aug, 1949	Campbel, Jr. et al.	137/505.
2653793	Sep, 1953	St. Clair	251/367.
2760507	Aug, 1956	Miller	137/63.
2887123	May, 1959	Becker	137/505.
3056424	Oct, 1962	Courtot et al.	251/367.
3448764	Jun, 1969	Dykzeul et al.	137/505.
3747629	Jun, 1972	Bauman	137/505.

Other Refs:
Primary Examiner: Hall, Carl E.
Assistant Examiner: Crane, Dan C.
Attorney: Candor, Candor & Tassone