US3702082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balancing device for rotating members
Assignee: Milacron Inc
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Filing: 1969-11-13
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Granted: 1972-11-07
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Expires: 1989-11-13
Abstract
Abstract A device for balancing rotating members positioned on a rotatable shaft or spindle. A pair of movable balance weights are positioned within the shaft or spindle and are movable both with respect to each other and in unison about the axis of rotation of the rotating mass. The device includes means for moving the balance weights while the structure within which they are housed is rotating.
Inventors
- 👤 Jacob Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:29
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/30; G01M1/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
A balancing device for balancing a rotating member positioned on a rotatable spindle while the same is rotating about its axis of rotation, said device comprising: a. a pair of movable balance weights positioned within said spindle, said weights having their respective centers of gravity radially spaced from the axis of rotation of said spindle and axially spaced from each other, each of said movable weights being of generally annular configuration and having internal gear teeth on its innermost surface; b. first weight moving means for moving said balance weights relative to each other and about said axis of rotation; c. second weight moving means for moving said balance weights in unison about said spindle axis; and d. means for selectively engaging said first or said second weight moving means whereby substantially to bring said rotating mass into balance.
Claim 2
Dependent Claim
139 words
A balancing device for balancing a rotating member positioned on a rotatable spindle while the same is rotating about its axis of rotation, said device comprising: a. a pair of movable balance weights positioned within said spindle, said weights having their respective centers of gravity radially spaced from the axis of rotation of said spindle and axially spaced from each other, each of said movable weights being of generally annular configuration and having internal gear teeth on its innermost surface; b. first weight moving means for moving said balance weights relative to each other and about said axis of rotation; c. second weight moving means for moving said balance weights in unison about said spindle axis; and d. means for selectively engaging said first or said second weight moving means whereby substantially to bring said rotating mass into balance.
Claim 3
Dependent Claim
68 words
The device of claim 1 wherein said first weight moving means and said second weight moving means comprise gear means meshing with said internal gear teeth to cause said balance weights to move relative to each other when said first weight moving means is activated and to cause said balance weights to move in unison about said axis of rotation when said second weight moving means is activated.
Claim 4
Dependent Claim
29 words
The device of claim 2 wherein said first weight moving means and said second weight moving means are independently driven by separate clutch means connected to said gear means.
Claim 5
Dependent Claim
32 words
The device of claim 3 including power input means for selectively imparting rotational motion to each of said clutch means to thereby move said balance weights and substantially balance said rotating member.
Claim 6
Dependent Claim
42 words
The device of claim 4 wherein said power input means comprises a clutch driving member driven by said spindle at a predetermined speed different from that of said spindle, said clutch driving member being selectively engageable with each of said clutch means.
Claim 7
Dependent Claim
20 words
The device of claim 5 including means for locking said movable weights in any desired position relative to said spindle.
Claim 8
Dependent Claim
31 words
The device of claim 6 wherein said locking means comprises axial force means for imposing an axial force on said balance weights to frictionally position them with respect to said spindle.
Claim 9
Dependent Claim
25 words
The device of claim 7 wherein said axial force means comprises at least one hydraulically actuated piston which bears against one of said balance weights.
Claim 10
Dependent Claim
47 words
The device of claim 7 wherein said locking means and said power input means are so coupled that upon actuating said weight moving means said locking means is in non-locking position, and when said weight moving means is not actuated said locking means is in locking position.
Claim 11
Dependent Claim
14 words
The device of claim 9 including means for sensing rotational unbalance of said spindle.
References Cited (Backward Citations)
US2241637A
Cited
GB1106901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |