Patent US3135427A successfully refreshed from Google Patents.
Patent US4002086A successfully refreshed from Google Patents.
US4002086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for automatic correction of unbalance in rapidly rotating machine elements
Assignee: Individual
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Filing: 1975-06-25
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Granted: 1977-01-11
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Expires: 1995-06-25
Abstract
Abstract Device for counteracting imbalance in a rotary body and automatically restoring it to a balanced condition. The device comprises a fluid-filled bore in which a throttling member moves freely, which transmits the pressure differentials developed about the axis of rotation during rotation of the body to a balancing mass movable in chambers disposed about the bore to displace the balancing mass a distance proportional to the pressure differentials and is effective upon the balancing mass to restore the body to balanced condition.
Inventors
- 👤 Rolf Bertil Reinhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:45
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/30; G01M1/36; G01M1/365; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2122; Y10T74/2123
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
A device for counteracting imbalances in a rotary body and automatically restoring it to be balanced condition, comprising: a. an axial bore in said rotary body forming a reservoir and containing a fluid medium; b. a plurality of chambers disposed about said bore at spaced distances therefrom and each having a balancing mass movable therein; c. means floating freely in said fluid containing reservoir for developing pressure differentials about the axis of rotation proportional to any imbalances arising during rotation of said body; d. means for transmitting said pressure differentials to said balancing masses to displace the latter in said chambers a distance proportional to the pressure differentials and being effective to restore said body to a balanced condition.
Claim 2
Independent Claim
119 words
A device for counteracting imbalances in a rotary body and automatically restoring it to be balanced condition, comprising: a. an axial bore in said rotary body forming a reservoir and containing a fluid medium; b. a plurality of chambers disposed about said bore at spaced distances therefrom and each having a balancing mass movable therein; c. means floating freely in said fluid containing reservoir for developing pressure differentials about the axis of rotation proportional to any imbalances arising during rotation of said body; d. means for transmitting said pressure differentials to said balancing masses to displace the latter in said chambers a distance proportional to the pressure differentials and being effective to restore said body to a balanced condition.
Claim 3
Dependent Claim
26 words
A device according to claim 1, in which the means for transmitting the pressure differentials to said balancing masses comprises the fluid medium from said reservoir.
Claim 4
Dependent Claim
24 words
A device according to claim 2, in which the fluid medium is transmitted by means of a circuit connecting said reservoir and said chambers;
Claim 5
Dependent Claim
30 words
A device according to claim 1, in which said floating means for developing pressure differentials comprises a ball having a lower specific weight than the fluid medium in said reservoir.
Claim 6
Dependent Claim
33 words
A device according to claim 3, in which said reservoir is connected to a source for supplying the fluid medium by means of a pump for circulating the fluid medium through said circuit.
Claim 7
Independent Claim
151 words
A device for counteracting imbalances in a rotary body and automatically restoring it to a balanced condition, comprising: a. an axial bore in said rotary body forming a reservoir and containing a fluid medium; b. a plurality of opposed circumferentially disposed chambers and each having a balancing mass movable therein and being provided with pressure-yielding partition means dividing said mass into two separate portions having different densities; c. means floating freely in said fluid containing reservoir for developing pressure differentials about the axis of rotation proportional to any imbalances arising during rotation of said body; d. means for transmitting said pressure differentials to one portion of said balancing masses to displace said portion in said chambers a distance proportional to the pressure differentials; and e. means effective to displace the other portion of said balancing masses in the opposed chambers a distance sufficient to restore said body to a balanced condition.
Claim 8
Independent Claim
151 words
A device for counteracting imbalances in a rotary body and automatically restoring it to a balanced condition, comprising: a. an axial bore in said rotary body forming a reservoir and containing a fluid medium; b. a plurality of opposed circumferentially disposed chambers and each having a balancing mass movable therein and being provided with pressure-yielding partition means dividing said mass into two separate portions having different densities; c. means floating freely in said fluid containing reservoir for developing pressure differentials about the axis of rotation proportional to any imbalances arising during rotation of said body; d. means for transmitting said pressure differentials to one portion of said balancing masses to displace said portion in said chambers a distance proportional to the pressure differentials; and e. means effective to displace the other portion of said balancing masses in the opposed chambers a distance sufficient to restore said body to a balanced condition.
Claim 9
Dependent Claim
28 words
A device according to claim 6, in which the portion of the balancing masses to which the pressure differentials are transmitted comprises the fluid medium from said reservoir.
Claim 10
Dependent Claim
24 words
A device according to claim 7, in which the fluid medium is transmitted by means of a circuit connecting said reservoir and said chambers.
Claim 11
Dependent Claim
27 words
A device according to claim 7, in which the other portion of the balancing mass comprises a fluid medium heavier than the fluid medium in said reservoir.
Claim 12
Dependent Claim
31 words
A device according to claim 9, in which said heavier fluid medium is transmitted from one of said chambers to the opposing chamber by means of a circuit interconnecting said chambers.
Claim 13
Dependent Claim
19 words
A device according to claim 6, in which said yielding partition means comprises a piston movable in said chambers.
Claim 14
Dependent Claim
30 words
A device according to claim 6, in which said floating means for developing pressure differentials comprises a ball having a lower specific weight than the fluid medium in said reservoir.
Claim 15
Dependent Claim
33 words
A device according to claim 8, in which said reservoir is connected to a source for supplying the fluid medium by means of a pump for circulating the fluid medium through said circuit.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |