US3178955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually-manipulatable shifting means for two-speed power tool
Assignee: Black and Decker Corp
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Filing: 1963-06-20
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Granted: 1965-04-20
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Sherwood G Enders
- 👤 David E Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:06
CPC Classifications
B; B23; B23B; B23B45/00; B23B45/008; B23D; B23D49/00; B23D49/10; B23D49/16; B23D49/162; B23D57/00; B23D57/0076; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19279; Y10T74/19293; Y10T74/19298; Y10T74/19307; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19451
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
IN A POWER-OPERATED DEVICE HAVING A TWO-SPEED GEAR CASE, MANUALLY-MANIPULATABLE MEANS FOR SHIFTING FROM ONE SPEED TO ANOTHER, COMPRISING: (A) A SHAFT JOURNALED IN THE WALL OF THE GEAR CASE FOR ROTARY MOVEMENT ABOUT ITS AXIS AND ALSO FOR LIMITED LONGITUDINAL MOVEMENT RADIALLY IN AND OUT OF THE GEAR CASE; (B) RESILIENT MEANS CONSTANTLY URGING SAID SHAFT INWARDLY OF THE GEAR CASE; (C) ECCENTRIC MEANS CARRIED ON THE INNER END OF SAID SHAFT; (D) AN EXTERNAL LEVER; AND (E) MEANS TO SECURE SAID LEVER TO THE OUTER END OF SAID SHAFT FOR PIVOTING MOVEMENT OF SAID LEVER ABOUT AN AXIS WHICH IS TRANSVERSE TO THE AXIS OF SAID SHAFT AND FOR CONJOINT ROTARY MOVEMENT OF SAID LEVER AND SHAFT ABOUT THE AXIS OF SAID SHAFT, WHEREBY SAID LEVER IS URGED BY SAID RESILIENT MEANS TO A NORMAL POSITION FLUSH AGAINST THE GEAR CASE, SAID LEVER PREVENTING THE COMPLETE INWARD WITHDRAWAL OF SAID SHAFT, AND WHEREBY THE FREE END OF SAID LEVER MAY BE LIFTED UP FROM THE GEAR CASE AND THEREAFTER SAID LEVER MAY BE ROTATED, LATERALLY REVERSED, AND RETURNED FLUSH AGAINST THE GEAR CASE, THEREBY ROTATING SAID SHAFT AND SAID ECCENTRIC MEANS INTO AN ALTERNATE 180* POSITION TO SHIFT FROM ONE SPEED TO ANOTHER.
Claim 2
Dependent Claim
205 words
IN A POWER-OPERATED DEVICE HAVING A TWO-SPEED GEAR CASE, MANUALLY-MANIPULATABLE MEANS FOR SHIFTING FROM ONE SPEED TO ANOTHER, COMPRISING: (A) A SHAFT JOURNALED IN THE WALL OF THE GEAR CASE FOR ROTARY MOVEMENT ABOUT ITS AXIS AND ALSO FOR LIMITED LONGITUDINAL MOVEMENT RADIALLY IN AND OUT OF THE GEAR CASE; (B) RESILIENT MEANS CONSTANTLY URGING SAID SHAFT INWARDLY OF THE GEAR CASE; (C) ECCENTRIC MEANS CARRIED ON THE INNER END OF SAID SHAFT; (D) AN EXTERNAL LEVER; AND (E) MEANS TO SECURE SAID LEVER TO THE OUTER END OF SAID SHAFT FOR PIVOTING MOVEMENT OF SAID LEVER ABOUT AN AXIS WHICH IS TRANSVERSE TO THE AXIS OF SAID SHAFT AND FOR CONJOINT ROTARY MOVEMENT OF SAID LEVER AND SHAFT ABOUT THE AXIS OF SAID SHAFT, WHEREBY SAID LEVER IS URGED BY SAID RESILIENT MEANS TO A NORMAL POSITION FLUSH AGAINST THE GEAR CASE, SAID LEVER PREVENTING THE COMPLETE INWARD WITHDRAWAL OF SAID SHAFT, AND WHEREBY THE FREE END OF SAID LEVER MAY BE LIFTED UP FROM THE GEAR CASE AND THEREAFTER SAID LEVER MAY BE ROTATED, LATERALLY REVERSED, AND RETURNED FLUSH AGAINST THE GEAR CASE, THEREBY ROTATING SAID SHAFT AND SAID ECCENTRIC MEANS INTO AN ALTERNATE 180* POSITION TO SHIFT FROM ONE SPEED TO ANOTHER.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |