US3727027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of balancing very small rotating objects using air jet acceleration
Assignee: United States Atomic Energy Commission
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Filing: 1971-03-25
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Granted: 1973-04-10
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Expires: 1991-03-25
Abstract
Abstract A system of balancing extremely small rotating devices is described. The device to be balanced is mounted on its own axes and rotated at a high rotational speed driven by an air blast. By this means only the device being balanced is rotated and the mass of fixtures need not be considered. The amount of imbalance is measured and a laser beam is used to remove a portion of the rotating device to reduce the imbalance.
Inventors
- 👤 W Kaiser
- 👤 C Rodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:59
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/30; G01M1/34; B; B23; B23K; B23K26/00; B23K26/351; G01M1/02; G01M1/06; G04; G04D; G04D7/00; G04D7/08; G04D7/082; G04D7/085; G04D7/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
The method of dynamically balancing an imbalanced rotatable object where said object is very small having a mass on the order of 1 gram, including the steps of: a. rotating said rotatable object to a predetermined speed with a first motive force from an air jet; b. decelarating the speed of rotation of said object by removing said first motive force from said object while maintaining a second motive force upon said object with said second motive force being less than said first motive force thereby allowing the speed of rotation of said object to drop successively to a measuring speed and a balancing speed; c. measuring with a force transducer the magnitude of said imbalance with said object at said measuring speed; d. developing a laser firing signal corresponding to the location and frequency of said imbalance with said object at said balancing speed and with said magnitude of imbalance measured at said measuring speed greater than a predetermined amount; e. firing a laser at said object at the point of imbalance in response to said laser firing signal with said object at said balancing speed, thereby removing a portion of said object; f. continuing automatically the balancing sequence of steps (a) through (e); and g. automatically stopping the balancing sequence with said magnitude of imbalance below a predetermined amount.
Claim 2
Independent Claim
221 words
The method of dynamically balancing an imbalanced rotatable object where said object is very small having a mass on the order of 1 gram, including the steps of: a. rotating said rotatable object to a predetermined speed with a first motive force from an air jet; b. decelarating the speed of rotation of said object by removing said first motive force from said object while maintaining a second motive force upon said object with said second motive force being less than said first motive force thereby allowing the speed of rotation of said object to drop successively to a measuring speed and a balancing speed; c. measuring with a force transducer the magnitude of said imbalance with said object at said measuring speed; d. developing a laser firing signal corresponding to the location and frequency of said imbalance with said object at said balancing speed and with said magnitude of imbalance measured at said measuring speed greater than a predetermined amount; e. firing a laser at said object at the point of imbalance in response to said laser firing signal with said object at said balancing speed, thereby removing a portion of said object; f. continuing automatically the balancing sequence of steps (a) through (e); and g. automatically stopping the balancing sequence with said magnitude of imbalance below a predetermined amount.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |