Control knob with integral detent and stop mechanisms
Abstract
Abstract AN INTEGRAL INSTRUMENT KNOB AND DETENT DEVICE FOR CONTROLLING ROTARY SWITCHES AND LIKE DEVICES REQUIRING MULTIPLE DISCRETE ANGULAR POSITION SHAFT CONTROL. A SHAFT FOR THE DEVICE TO B CONTROLLED PROTRUDES THROUGH A PANEL, AND THE KNOB IS INSTALLED AND TIGHTENED THEREON. THE DETENT POSITIONS ARE FORMED BY A CONTOURED SURFACE INSIDE A CAVITY WITHIN THE BODY OF SAID KNOB. TWO CYLINDRICAL ROLLERS (OR BALLS) ARE PROVIDED, AND ARE HELD AGAINST THE CONTOURED SURFACE BY A LEAF SPRING MOUNTED ON A BASE ADAPTED FOR NON-MOVING MOUNTING ON THE PANEL. THE BALL OR ROLLER IS CONSTRAINED AGAINST ANY BUT RADIAL MOVEMENT. STOPS ARE PROVIDED BY A PAIR OF RINGS BUILT TO ENGAGE THE CONTOURED SURFACE, AND ARE THEREFORE ADJUSTABLE ROTATIONALLY IN INTEGRAL DETENT STEPS.
Inventors
- 👤 Heinz Ernst Johannes Kroll
- 👤 Horst Dieter Ziegler
Bibliographic Details
Claims Analysis
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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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |