US3575129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotation monitor
Assignee: Case LLC
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Filing: 1968-12-04
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Granted: 1971-04-13
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Expires: 1988-12-04
Abstract
Abstract An apparatus for indicating to an operator the rotational rate of an element that is located remotely from the operator. A multicolored reflector is secured to the rotating element and a beam of light reflected off said multicolored reflector is transmitted through a fiber optic cable to the operator''s station. The operator can by observing the beam of light emitted from the fiber optic cable ascertain the rotational rate of the element.
Inventors
- 👤 Herbert D Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/486; G01P3/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
255 words
In a revolution indicator for remotely indicating the speed of a rotating element, comprising a rotating element, a multicolored reflector rotatable in timed relation with said rotating element, located closely adjacent thereto, said reflector having sectors of different colors, said sectors arranged such that during rotation of the rotating element, all sectors move past a common area, a fiber optic cable means having first and second independent light-conducting channels optically insulated from each other: said first light-conducting channel having a light-emitting face at one end and a light-receiving face at the other end; said second light-conducting channel having a light-receiving face at one end and a light-emitting face at the other end wherein a portion of said first and second light-conducting channels merge together at said one ends; said one ends of said first and second light-conducting channels disposed in relation to said rotating element such that a light emitted from said first light-conducting channel strikes said light reflector and rebounds into the light-receiving face of said second light-conducting channel a protective cover enclosing said multicolored reflector and said merged ends to shield them from the surrounding environment; a light source located adjacent the other end of said first light-conducting channel such that light is received by the light-receiving face; said other end of said second light-conducting channel being spaced from said other end of said light-conducting channel and located remote from said rotating element such that a human observer can perceive changes on said light-emitting face as the speed of said rotating elements changes.
Claim 2
Dependent Claim
255 words
In a revolution indicator for remotely indicating the speed of a rotating element, comprising a rotating element, a multicolored reflector rotatable in timed relation with said rotating element, located closely adjacent thereto, said reflector having sectors of different colors, said sectors arranged such that during rotation of the rotating element, all sectors move past a common area, a fiber optic cable means having first and second independent light-conducting channels optically insulated from each other: said first light-conducting channel having a light-emitting face at one end and a light-receiving face at the other end; said second light-conducting channel having a light-receiving face at one end and a light-emitting face at the other end wherein a portion of said first and second light-conducting channels merge together at said one ends; said one ends of said first and second light-conducting channels disposed in relation to said rotating element such that a light emitted from said first light-conducting channel strikes said light reflector and rebounds into the light-receiving face of said second light-conducting channel a protective cover enclosing said multicolored reflector and said merged ends to shield them from the surrounding environment; a light source located adjacent the other end of said first light-conducting channel such that light is received by the light-receiving face; said other end of said second light-conducting channel being spaced from said other end of said light-conducting channel and located remote from said rotating element such that a human observer can perceive changes on said light-emitting face as the speed of said rotating elements changes.
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |