Patent US4685485A successfully refreshed from Google Patents.
US4685485A
Expired / Lapsed
US
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Pneumatic devices with noise dampening
Assignee: Honeywell Inc
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Filing: 1981-11-25
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Granted: 1987-08-11
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Expires: 2001-11-25
Abstract
Abstract A pneumatic device having a housing defining at least two chambers with one of the chambers having a nozzle located therein, a diaphragm separating the two chambers, main pressure connected to one of the chambers, an output line connected to one of the chambers for providing an output signal having a value dependent upon the interaction between the nozzle and the diaphragm, and a dampening apparatus located within one of the chambers and touching the housing, the dampening apparatus being flexible for permitting movement of the diaphragm to control the output pressure in the output line and to dampen noise.
Inventors
- 👤 Richard D. Haugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:33
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/163; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
157 words
A pneumatic device having noise dampening comprising: housing means defining at least two chambers, one of said chambers having a nozzle therein; diaphragm means including a diaphragm separating said at least two chambers; first connecting means connecting a source of pressure to one of said chambers; second connecting means connected to one of said chambers for providing an output signal, said output signal having a value dependent upon interaction between said nozzle and said diaphragm; and, dampening means within one of said chambers and touching said housing means, said dampening means being flexible for permitting movement of said diaphragm to control said output pressure in said second connecting means and to dampen noise, said dampening means comprising a pusher plate having a flexible outer perimeter, contacting said housing means for permitting movement of said diaphragm to control said output pressure and to dampen noise, said pusher plate having cuts forming flexible arms which touch said housing means.
Claim 2
Dependent Claim
157 words
A pneumatic device having noise dampening comprising: housing means defining at least two chambers, one of said chambers having a nozzle therein; diaphragm means including a diaphragm separating said at least two chambers; first connecting means connecting a source of pressure to one of said chambers; second connecting means connected to one of said chambers for providing an output signal, said output signal having a value dependent upon interaction between said nozzle and said diaphragm; and, dampening means within one of said chambers and touching said housing means, said dampening means being flexible for permitting movement of said diaphragm to control said output pressure in said second connecting means and to dampen noise, said dampening means comprising a pusher plate having a flexible outer perimeter, contacting said housing means for permitting movement of said diaphragm to control said output pressure and to dampen noise, said pusher plate having cuts forming flexible arms which touch said housing means.
Claim 3
Dependent Claim
16 words
The device of claim 1 wherein said pusher plate is in the shape of a disc.
Claim 4
Dependent Claim
57 words
The device of claim 2 wherein said two chambers are comprised of first and second chambers, said first connecting means connects said source of pressure to said first chamber, said nozzle is located within said first chamber, said second connecting means is connected to said first chamber, and said dampening means is located within said second chamber.
Claim 5
Dependent Claim
40 words
The device of claim 3 wherein said housing means comprises a third chamber defined by a second diaphragm, and an adjustment mechanism located through said housing and into said third chamber for providing an adjustable force against said second diaphragm.
Claim 6
Dependent Claim
33 words
The device of claim 4 wherein said adjustment mechanism comprises a spring means contacting on one side said second diaphragm and on another side an adjustment screw which extends through said housing means.
Claim 7
Dependent Claim
92 words
The device of claim 5 wherein said housing means comprises a fourth chamber connected to a pilot input and having a pusher plate therein and defined by a third diaphragm which separates said fourth chamber from said second chamber and said second diaphragm which separates said fourth chamber from said third chamber, said pusher plate in said fourth chamber transmitting said force exerted against said second diaphragm by said spring through said third diaphragm, through said pusher plate of said dampening means, and through said diaphragm separating said at least two chambers.
Claim 8
Dependent Claim
57 words
The device of claim 1 wherein said two chambers are comprised of first and second chambers, said first connecting means connects said source of pressure to said first chamber, said nozzle is located within said first chamber, said second connecting means is connected to said first chamber, and said dampening means is located within said second chamber.
Claim 9
Dependent Claim
40 words
The device of claim 7 wherein said housing means comprises a third chamber defined by a second diaphragm, and an adjustment mechanism located through said housing and into said third chamber for providing an adjustable force against said second diaphragm.
Claim 10
Dependent Claim
33 words
The device of claim 8 wherein said adjustment mechanism comprises a spring means contacting on one side said second diaphragm and on another side an adjustment screw which extends through said housing means.
Claim 11
Dependent Claim
88 words
The device of claim 9 wherein said housing means comprises a fourth chamber connected to a pilot input and having a pusher plate therein and defined by a third diaphragm which separates said fourth chamber from said second chamber and said second diaphragm which separates said fourth chamber from said third chamber, said pusher plate in said fourth chamber transmitting said force exerted against said second diaphragm by said spring through said third diaphragm, through said dampening means, and through said diaphragm separating said at least two chambers.
Claim 12
Dependent Claim
40 words
The device of claim 1 wherein said housing means comprises a third chamber defined by a second diaphragm, and an adjustment mechanism located through said housing and into said third chamber for providing an adjustable force against said second diaphragm.
Claim 13
Dependent Claim
33 words
The device of claim 11 wherein said adjustment mechanism comprises a spring means contacting on one side said second diaphragm and on another side an adjustment screw which extends through said housing means.
Claim 14
Dependent Claim
90 words
The device of claim 12 wherein said housing means comprises a fourth chamber connected to a pilot input and having a pusher plate therein and defined by a third diaphragm which separates said fourth chamber from said fist and second chambers and said second diaphragm which separates said fourth chamber from said third chamber, said pusher plate in said fourth chamber transmitting said force exerted against said second diaphragm by said spring through said third diaphragm, through said dampening means, and through said diaphragm separating said at least two chambers.
References Cited (Backward Citations)
US3072143A
Cited
US3169402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-10 | 1991-02-09 | 1991-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-10 | 1995-02-09 | 1995-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-10 | 1999-02-09 | 1999-08-11 | $7700.00 | Window Closed / Lapsed |