Patent US3791405A successfully refreshed from Google Patents.
US3791405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator construction and method of making the same
Assignee: Robertshaw Controls Co
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Filing: 1972-11-20
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Granted: 1974-02-12
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Expires: 1992-11-20
Abstract
Abstract A pressure regulator construction having a housing provided with a control chamber interconnected to an exhaust chamber by a valve seat controlled by a movable valve member. A compression spring acts on the valve member to tend to move the valve member in one direction relative to the valve seat. A spring retainer is movably carried by the housing and has the other end of the spring effectively acting against the same. A movable cam is carried by the housing and is operatively associated with the spring retainer to adjust the same relative to the housing and thus vary the force of the spring whereby the set point of the pressure regulator construction can be selectively set. A mounting arrangement is provided and includes a single fastening member securing the spring retainer and the cam to the housing while permitting movement therebetween.
Inventors
- 👤 H Brakebill
- 👤 J Lewis
- 👤 W Berleyoung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:50
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/163; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
157 words
A pressure regulator construction comprising a housing means having a control chamber interconnected to an exhaust chamber by a valve seat, movable valve member means for opening and closing said valve seat, spring means having opposed ends one of which effectively acts on said valve member means to tend to move said valve member means in one direction relative to said valve seat, a spring retainer movably carried by said housing means and having the other end of said spring means effectively act against the same, cam means movably carried by said housing means and being operatively associated with said spring retainer to adjust the same relative to said housing means and thus vary the force of said spring means whereby the set point of said regulator construction can be selectively set, and mounting means including a single fastening member securing said spring retainer and said cam means to said housing means while permitting said movement therebetween.
Claim 2
Dependent Claim
157 words
A pressure regulator construction comprising a housing means having a control chamber interconnected to an exhaust chamber by a valve seat, movable valve member means for opening and closing said valve seat, spring means having opposed ends one of which effectively acts on said valve member means to tend to move said valve member means in one direction relative to said valve seat, a spring retainer movably carried by said housing means and having the other end of said spring means effectively act against the same, cam means movably carried by said housing means and being operatively associated with said spring retainer to adjust the same relative to said housing means and thus vary the force of said spring means whereby the set point of said regulator construction can be selectively set, and mounting means including a single fastening member securing said spring retainer and said cam means to said housing means while permitting said movement therebetween.
Claim 3
Dependent Claim
27 words
A pressure regulator construction as set forth in claim 1 wherein said spring retainer is axially movable along a longitudinal axis thereof relative to said housing means.
Claim 4
Dependent Claim
20 words
A pressure regulator construction as set forth in claim 2 wherein said cam means is rotatable about said longitudinal axis.
Claim 5
Dependent Claim
52 words
A pressure regulator construction as set forth in claim 3 wherein said spring retainer has an annular flange means, said cam means having cam surface means disposed between said housing means and said flange means to act on said flange means to axially adjust said spring retainer relative to said housing means.
Claim 6
Dependent Claim
63 words
A pressure regulator construction as set forth in claim 4 wherein said annular flange means of said spring retainer has a plurality of cam followers disposed thereon in circular array, said cam means having said cam surface means formed of a plurality of like cam rises disposed thereon in circular array and being in alignment with said cam followers to respectively act thereon.
Claim 7
Dependent Claim
30 words
A pressure regulator construction as set forth in claim 1 wherein said spring retainer has an adjustable part carried thereby that bears against saiD other end of said spring means.
Claim 8
Dependent Claim
40 words
A pressure regulator construction as set forth in claim 6 wherein said adjustable part of said spring retainer comprises a threaded member threadedly disposed on a threaded adjusting screw, said screw having an enlarged head bearing against said spring retainer.
Claim 9
Dependent Claim
35 words
A pressure regulator construction as set forth in claim 1 wherein said mounting means comprises a spring member bearing against said spring retainer and being secured to said housing means by said single fastening member.
Claim 10
Dependent Claim
25 words
A pressure regulator construction as set forth in claim 8 wherein said single fastening member comprises a threaded fastening member threaded to said housing means.
Claim 11
Dependent Claim
18 words
A pressure regulator construction as set forth in claim 8 wherein said spring member comprises a leaf spring.
Claim 12
Dependent Claim
46 words
A pressure regulator construction as set forth in claim 10 wherein said leaf spring has opposed ends, one of said ends of said leaf spring bearing against said spring retainer, said single fastening member securing the other end of said leaf spring to said housing means.
Claim 13
Dependent Claim
22 words
A pressure regulator construction as set forth in claim 11 wherein said leaf spring is reversely bent between said opposed ends thereof.
Claim 14
Dependent Claim
25 words
A pressure regulator construction as set forth in claim 11 wherein said one end of said leaf spring prevents rotational movement of said spring retainer.
Claim 15
Dependent Claim
56 words
A pressure regulator construction as set forth in claim 13 wherein said spring retainer has a plurality of projections extending therefrom, said one end of said leaf spring having a plurality of openings therein respectively receiving said projections of said spring retainer to thereby prevent rotational movement of said spring retainer relative to said housing means.
Claim 16
Dependent Claim
32 words
A pressure regulator construction as set forth in claim 14 wherein only two of said projections extend from said spring retainer and the same are diametrically disposed relative to said spring retainer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |