US3746310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibrator driven by pressurized fluid
Assignee: Individual
•
Filing: 1971-06-10
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Granted: 1973-07-17
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Expires: 1991-06-10
Abstract
Abstract A vibrator is provided having an eccentric member enclosed in a housing and arranged to be set in motion in an eccentric and vibration-inducing rolling movement inside the housing, the eccentric member and the housing each being provided with intermeshing screw threads, the number of starts of the threads on the interior of the housing being one more than the number of starts in the threads on the exterior of the eccentric member.
Inventors
- 👤 E Kareby
- 👤 J Fransson
- 👤 H Holmlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:02
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/02; E04G21/06; E04G21/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
219 words
A vibrator adapted to be driven by a pressurized fluid, comprising, in combination, a tubular housing; a cylinder of smaller diameter than the internal diameter of the housing and arranged within the housing; one of the tubular housing and the internal cylinder being rotatable in relation to the other under the influence of the static pressure of pressurized fluid passing through the vibrator, the other being relatively stationary, and neither being mechanicallY driven; the internal cylinder having screw threads on its external periphery, and the tubular housing having screw threads on its internal periphery, the threads of the housing engaging with threads on the internal cylinder, the number of starts in the threads on the housing over a given length being one more than the number of starts of the threads on the internal cylinder over the same length; an inlet and an outlet in the housing, for introduction and withdrawal of a pressurized fluid, and passages connecting the inlet to one side of the threaded portions and connecting the outlet to the other side of the threaded portions, so that pressurized fluid flows operatively along the threads to impart an eccentric and vibration-including rolling movement of the internal cylinder within the tubular housing under the influence of the static pressure of the pressurized fluid passing through the vibrator.
Claim 2
Dependent Claim
219 words
A vibrator adapted to be driven by a pressurized fluid, comprising, in combination, a tubular housing; a cylinder of smaller diameter than the internal diameter of the housing and arranged within the housing; one of the tubular housing and the internal cylinder being rotatable in relation to the other under the influence of the static pressure of pressurized fluid passing through the vibrator, the other being relatively stationary, and neither being mechanicallY driven; the internal cylinder having screw threads on its external periphery, and the tubular housing having screw threads on its internal periphery, the threads of the housing engaging with threads on the internal cylinder, the number of starts in the threads on the housing over a given length being one more than the number of starts of the threads on the internal cylinder over the same length; an inlet and an outlet in the housing, for introduction and withdrawal of a pressurized fluid, and passages connecting the inlet to one side of the threaded portions and connecting the outlet to the other side of the threaded portions, so that pressurized fluid flows operatively along the threads to impart an eccentric and vibration-including rolling movement of the internal cylinder within the tubular housing under the influence of the static pressure of the pressurized fluid passing through the vibrator.
Claim 3
Dependent Claim
39 words
A vibrator in accordance with claim 1, in which the tubular housing is provided with at least one internal cylindrical bushing, on the internal periphery of which are disposed the threads engaging with the threads on the internal cylinder.
Claim 4
Dependent Claim
29 words
A vibrator in accordance with claim 2, having a plurality of separate cylindrical bushings, arranged axially in relation to each other, and within which the internal cylinder is disposed.
Claim 5
Dependent Claim
30 words
A vibrator in accordance with cliam 2, in which the minimum length of the bushings is equal to at least one pitch of the threads along the internal periphery thereof.
Claim 6
Dependent Claim
30 words
A vibrator in accordance with cliam 2, in which the minimum length of the bushings is equal to at least one pitch of the threads along the internal periphery thereof.
Claim 7
Dependent Claim
68 words
A vibrator in accordance with claim 2, in which the internal cylinder is provided with a plain cylindrical section at each end, and the tubular housing is provided with internal tracks positioned opposite the plain cylindrical section, and on which the internal cylinder rolls via the plain cylindrical section, the centrifugal force generated by the eccentric rolling movement of the internal cylinder being taken up by the tracks.
Claim 8
Dependent Claim
43 words
A vibrator according to claim 5 in which the outside diameter of the bushings is equal to the inside diameter of the tubular housing, and the larger inside diameter is one height of thread larger than the outside diameter of the internal cylinder.
Claim 9
Dependent Claim
14 words
A vibrator in accordance with claim 1, adapted to be driven by compressed air.
Claim 10
Dependent Claim
26 words
A vibrator in accordance with claim 1, in which the tubular housing has a flat cap at one end, adapting it for the compaction of concrete.
Claim 11
Dependent Claim
46 words
A vibrator in accordance with claim 1, in which the tubular housing has one open end, in which is inserted an end piece including a line for provision of pressurized fluid to the vibrator, and an annular outlet for exhaust of pressurized fluid from the vibrator.
Claim 12
Dependent Claim
67 words
A vibrator in accordance with claim 9, in which the internal cylinder has an internal passage connecting with the inlet for pressurized fluid and opening onto one end of the threaded portion of the cylinders, and the annular outlet opens onto the other end of the threaded portion of the cylinders, for fluid flow of pressurized fluid from the inlet to the outlet along the threaded portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |