Combination electric switch and variable resistor
Abstract
Abstract A ROTOR IN A HOUSING IS PROVIDED WITH AN AXIAL PASSAGE, IN WHICH A CONTROL SHAFT IS ROTATABLY MOUNTED. A FIRST ELECTRIC CONTACT CARRIED BY THE ROTOR ENGAGES A RESISTANCE ELEMENT IN THE HOUSING. A SECOND ELECTRIC CONTACT CARRIED BY THE ROTOR ENGAGES AN ELECTRICAL COLLECTOR INSIDE THE HOUSING AND HAS ENDS FACING EACH OTHER AT ONE SIDE OF THE ROTOR TO FORM FIXED CONTACTS. A MOVABLE SWITCH CONTACT FASTENED TO THE SHAFT EXTENDS LATERALLY BETWEEN THE FIXED CONTACTS, WHERE IT IS NORMALLY HELD CENTERED BETWEEN THEM BY A SPRING CONNECTING THE SHAFT AND ROTOR. THE FRICTIONAL RESISTANCE OF THE ROTOR TO BEING TURNED IS GREATER THAN THE RESISTANCE THAT THE SPRING OFFERS TO TURNING OF THE SHAFT IN THE ROTOR, SO WHEN THE SHAFT IS ROTATED IT WILL SWING THE MOVABLE SWITCH CONTACT INTO ENGAGEMENT WITH ONE OF THE FIXED CONTACTS TO TURN THE ROTOR. WHEN THE SHAFT IS RELEASED, THE SPRING WILL CENTER THE MOVABLE CONTACT BETWEEN THE FIXED CONTACTS AGAIN.
Inventors
- 👤 Joseph Arthur Edwards Jr
- 👤 Vernon Bishop
- 👤 Melan Geci
- 👤 Dudley H Campbell
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |