US3746804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase-linking rotating mechanism for plural switch assembly
Assignee: HP Inc
•
Filing: 1971-08-23
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Granted: 1973-07-17
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Expires: 1991-08-23
Abstract
Abstract Two or more rotating elements are linked together so they can be rotated simultaneously by a primary control. The first element is detented from a support by a detent that requires a relatively large override torque. Each successive element is detented from the preceding element by a detent that requires less override torque. The primary control, connected to the first element, rotates all the elements simultaneously without changing the phase relationships between elements. A control to a later element rotates that element and the succeeding elements without rotating the preceding elements. Thus, the phase relationship between elements can be adjusted.
Inventors
- 👤 L Gammill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:37
CPC Classifications
G; G05; G05G; G05G13/00; H; H01; H01H; H01H9/00; H01H9/20; H01H9/26; H01H19/00; H01H19/02; H01H19/10; H01H19/14; H01H2019/143
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
Apparatus for controlling the phase relationship between a plurality of rotatable elements, said apparatus comprising: a first rotatable element; a first detent mechanism coupled to the first rotatable element for providing it with a plurality of different detent positions and for requiring the application of a first override torque to rotate the first rotatable element from one of these detent positions to another; a second rotatable element; a second detent mechanism coupled to the second rotatable element for providing it with a plurality of different detent positions and for requiring the application of a second override torque smaller than the first override torque to rotate the second rotatable element from one of these detent positions to another; a hollow first shaft coupled to the first rotatable element and to the second detent mechanism for simultaneously rotating the first and second rotatable elements together to maintain the phase relationship therebetween; and a second shaft coaxially supported within the first shaft and coupled to the second rotatable element for rotating the second rotatable element relative to the first rotatable element to adjust the phase relationship therebetween.
Claim 2
Dependent Claim
184 words
Apparatus for controlling the phase relationship between a plurality of rotatable elements, said apparatus comprising: a first rotatable element; a first detent mechanism coupled to the first rotatable element for providing it with a plurality of different detent positions and for requiring the application of a first override torque to rotate the first rotatable element from one of these detent positions to another; a second rotatable element; a second detent mechanism coupled to the second rotatable element for providing it with a plurality of different detent positions and for requiring the application of a second override torque smaller than the first override torque to rotate the second rotatable element from one of these detent positions to another; a hollow first shaft coupled to the first rotatable element and to the second detent mechanism for simultaneously rotating the first and second rotatable elements together to maintain the phase relationship therebetween; and a second shaft coaxially supported within the first shaft and coupled to the second rotatable element for rotating the second rotatable element relative to the first rotatable element to adjust the phase relationship therebetween.
Claim 3
Dependent Claim
20 words
Apparatus as in claim 1 wherein each rotatable element comprises a rotary switch element supported by a printed circuit board.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |