Patent US3631879A successfully refreshed from Google Patents.
US3631879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic oscillator
Assignee: Bendix Corp
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Filing: 1969-08-05
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Granted: 1972-01-04
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Expires: 1989-08-05
Abstract
Abstract A fluid oscillator has a movable cylinder dividing a cavity into two chambers. Passages in the cylinder connect the inlet with each of the chambers. Outlets in each of the chambers are located so that motion of the cylinder alternately increases the size of one of the outlet openings while decreasing the size of the other outlet opening.
Inventors
- 👤 Ralph H Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:13
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2668; Y10T137/2688; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
178 words
A fluid oscillator which comprises: a housing having a cavity, a first inlet for receiving fluid, and a first and second outlet for exhausting fluid, each of said outlets having an opening in the wall of said housing cavity; and means for dividing said cavity into a first and second chamber, said first chamber communicating with said housing first outlet and said second chamber communication with said housing second outlet, said dividing means having a first passage which communicates with said housing inlet and a second passage which communicates with said first passage and said first anD second chambers, said dividing means movably disposed adjacent said outlets for movement past said outlet openings to vary the size of the openings when said dividing means moves, whereby fluid enters said housing inlet flows into said first passage, out of said second passage into said chambers and out of said chambers through said outlet openings which vary in size with the movement of said dividing means, thereby changing the rate of fluid flow from the first and second housing outlets.
Claim 2
Dependent Claim
178 words
A fluid oscillator which comprises: a housing having a cavity, a first inlet for receiving fluid, and a first and second outlet for exhausting fluid, each of said outlets having an opening in the wall of said housing cavity; and means for dividing said cavity into a first and second chamber, said first chamber communicating with said housing first outlet and said second chamber communication with said housing second outlet, said dividing means having a first passage which communicates with said housing inlet and a second passage which communicates with said first passage and said first anD second chambers, said dividing means movably disposed adjacent said outlets for movement past said outlet openings to vary the size of the openings when said dividing means moves, whereby fluid enters said housing inlet flows into said first passage, out of said second passage into said chambers and out of said chambers through said outlet openings which vary in size with the movement of said dividing means, thereby changing the rate of fluid flow from the first and second housing outlets.
Claim 3
Dependent Claim
168 words
A fluid oscillator which comprises: a housing having an interior chamber, input means for receiving fluid, and a first and second outlet means for exhausting fluid, each of said outlet means having an opening in the wall of said interior chamber; and a body located within the chamber of said housing, said body having a radial and axial passage, said radial passage communicating with said axial passage and said input means of said housing, said axial passage extending through said body, said body movably disposed adjacent said outlets for movement past said outlet openings to vary the size of the openings when said body moves whereby fluid entering said housing input means flows into said radial passage in said body, out of said body by said axial passage and out of said chamber through said outlet openings which vary in size with the movement of said body, thereby producing a fluid flow from said housing outlet means which varies as a function of the oscillations of said body.
Claim 4
Dependent Claim
168 words
A fluid oscillator which comprises: a housing having an interior chamber, input means for receiving fluid, and a first and second outlet means for exhausting fluid, each of said outlet means having an opening in the wall of said interior chamber; and a body located within the chamber of said housing, said body having a radial and axial passage, said radial passage communicating with said axial passage and said input means of said housing, said axial passage extending through said body, said body movably disposed adjacent said outlets for movement past said outlet openings to vary the size of the openings when said body moves whereby fluid entering said housing input means flows into said radial passage in said body, out of said body by said axial passage and out of said chamber through said outlet openings which vary in size with the movement of said body, thereby producing a fluid flow from said housing outlet means which varies as a function of the oscillations of said body.
Claim 5
Dependent Claim
34 words
A fluid oscillator as recited in claim 2 wherein said output means for said housing comprises two outlets spaced from each other so that the two output signals therefrom are 180* out of phase.
Claim 6
Dependent Claim
41 words
A fluid oscillator as recited in claim 3 wherein said body has a fluid step bearing which communicates with said radial passage and said housing input means so that said body floats within the chamber when fluid passes through the housing.
Claim 7
Dependent Claim
26 words
A fluid oscillator as recited in claim 3 wherein the shape of the housing chamber and the shape of the body within the chamber is cylindrical.
Claim 8
Dependent Claim
30 words
A fluid oscillator as recited in claim 2 wherein said body has a fluid step bearing so that said body floats within the chamber when fluid passes through the housing.
Claim 9
Dependent Claim
26 words
A fluid oscillator as recited in claim 6 wherein the shape of the housing chamber and the shape of the body within the chamber is cylindrical.
Claim 10
Dependent Claim
26 words
A fluid oscillator as recited in claim 7 wherein the shape of the housing chamber and the shape of the body within the chamber is cylindrical.
Claim 11
Dependent Claim
26 words
A fluid oscillator as recited in claim 2 wherein the shape of the housing chamber and the shape of the body within the chamber is cylindrical.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |