US3621180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for correcting unbalances on a rotating mass
Assignee: Kearfott Guidance and Navigation Corp
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Filing: 1969-06-03
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Granted: 1971-11-16
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Expires: 1989-06-03
Abstract
Abstract A system for correcting unbalances on a rotating mass, in which a laser is directed towards the rotating mass and is adapted to burn off a portion of the mass during its rotation. An electronic control device is connected to the laser for receiving unbalance information, comparing same with a reference point on the mass and firing the laser accordingly.
Inventors
- 👤 William Rolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:31
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/30; G01M1/34
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
140 words
Apparatus for correcting unbalances on a rotating mass, said apparatus comprising a laser directed towards said rotating mass and adapted to burn off a portion of said mass during rotation thereof, detection means for detecting said unbalances for providing unbalance information, photocell pickoff means to establish and sense a reference point on said rotating mass for providing reference point information, a digital-logic system connected to said detection means for receiving the unbalance information and connected to said pickoff means for receiving the reference point information, a control module connected to said digital-logic system and connected to said laser for receiving the control information and for firing said laser accordingly, a visual digital display connected to and controlled by said digital-logic system, and a strobe unit connected to and controlled by said digital logic system for visually inspecting said rotating mass.
Claim 2
Dependent Claim
140 words
Apparatus for correcting unbalances on a rotating mass, said apparatus comprising a laser directed towards said rotating mass and adapted to burn off a portion of said mass during rotation thereof, detection means for detecting said unbalances for providing unbalance information, photocell pickoff means to establish and sense a reference point on said rotating mass for providing reference point information, a digital-logic system connected to said detection means for receiving the unbalance information and connected to said pickoff means for receiving the reference point information, a control module connected to said digital-logic system and connected to said laser for receiving the control information and for firing said laser accordingly, a visual digital display connected to and controlled by said digital-logic system, and a strobe unit connected to and controlled by said digital logic system for visually inspecting said rotating mass.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1, wherein said digital-logic system includes a plurality of decade switches.
References Cited (Backward Citations)
US2322561A
Cited
US2346975A
Cited
US3259730A
Cited
US3169183A
Cited
US3383491A
Cited
NL6607025A
Cited
US3485996A
Cited
US3472998A
Cited
US3469076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |