US3790137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating pneumatic vibrator
Assignee: Individual
•
Filing: 1971-05-14
•
Granted: 1974-02-05
•
Expires: 1991-05-14
Abstract
Abstract A rotating pneumatic vibrator in which a cylindrical housing is provided with an axial shaft spaced inwardly from the walls of the housing to provide a circular space between the shaft and the housing. A cylindrical rotor having a diameter greater than the shaft and smaller then the housing is mounted on the shaft for movement thereabout. A longitudinally extending radially moveable vane is mounted in the shaft and is arranged to be pneumatically pressed against the rotor. Air forces the vane against the rotor and escapes into the chamber formed between the shaft and the rotor, the air forces the rotor to move about the shaft and then escapes to the atmosphere with the rotor and vane returned to their beginning point. The motion is continuous and produces vibrations due to the movement of the rotor on the shaft. Replaceable circular wear plates are fitted in each end of the housing to seal the ends of the rotor to prevent leakage.
Inventors
- 👤 T Wadensten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:05
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/18; B06B1/186
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
277 words
A rotary pneumatic vibrator comprising a cylindrical housing, a pair of circular end plates detachably secured to opposite ends of said housing, a circular wear plate secured between each end plate and said housing, a shaft mounted axially of said housing and extending through said end plates, means locking said shaft to said end plates to prevent relative rotation therebetween, said shaft having a radial slot formed therein extending longitudinally from one of said end plates to the other of said end plates, said shaft having an air inlet bore extending through one end thereof and communicating with the slot in said shaft, said shaft having an exhaust bore formed therein, and extending through at least one end thereof, a plurality of inlet bores extending through said shaft from the inner end portion of said slot through the side of said shaft, a plurality of exhaust ports extending from said exhaust bore through the side walls of said shaft, said inlet bores and said exhaust ports being positioned closely adjacent to and on opposite sides of said slot, a vane mounted in said slot for radial reciprocation therein and adapted when at its inner end to close said inlet bores, and a cylindrical rotor having an inner diameter greater than the diameter of said shaft and an outer diameter less than the inner diameter of said housing loosely mounted about said shaft within said housing with its opposite ends engaging against said wear plates, whereby upon application of air unDer pressure to said inlet bore said vane is forced outwardly of said slot and said rotor is forced to move about said shaft in an unbalanced condition.
Claim 2
Dependent Claim
277 words
A rotary pneumatic vibrator comprising a cylindrical housing, a pair of circular end plates detachably secured to opposite ends of said housing, a circular wear plate secured between each end plate and said housing, a shaft mounted axially of said housing and extending through said end plates, means locking said shaft to said end plates to prevent relative rotation therebetween, said shaft having a radial slot formed therein extending longitudinally from one of said end plates to the other of said end plates, said shaft having an air inlet bore extending through one end thereof and communicating with the slot in said shaft, said shaft having an exhaust bore formed therein, and extending through at least one end thereof, a plurality of inlet bores extending through said shaft from the inner end portion of said slot through the side of said shaft, a plurality of exhaust ports extending from said exhaust bore through the side walls of said shaft, said inlet bores and said exhaust ports being positioned closely adjacent to and on opposite sides of said slot, a vane mounted in said slot for radial reciprocation therein and adapted when at its inner end to close said inlet bores, and a cylindrical rotor having an inner diameter greater than the diameter of said shaft and an outer diameter less than the inner diameter of said housing loosely mounted about said shaft within said housing with its opposite ends engaging against said wear plates, whereby upon application of air unDer pressure to said inlet bore said vane is forced outwardly of said slot and said rotor is forced to move about said shaft in an unbalanced condition.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1 wherein said shaft includes axial extensions at opposite ends thereof projecting through said wear plates and said end plates.
Claim 4
Dependent Claim
16 words
A device as claimed in claim 1 wherein said exhaust bore extends completely through said shaft.
Claim 5
Dependent Claim
21 words
A device as claimed in claim 1 wherein said rotor slidably and sealingly engages the wear plates at opposite ends thereof.
Claim 6
Dependent Claim
21 words
A device as claimed in claim 1 wherein said vane slidably and sealingly engages said wear plates at opposite ends thereof.
Claim 7
Dependent Claim
24 words
A device as claimed in claim 1 wherein the outer portion of said vane slidably and sealingly engages the inner face of said rotor.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |