US3190994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam-actuated control switch mounting for motorized lift truck
Assignee: LEWIS-SHEPARD Co
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Filing: 1963-10-31
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Granted: 1965-06-22
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Bernard B Becker
- 👤 Francis W Dorion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:19
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/60; H01H19/62; B; B62; B62B; B62B3/00; B62B3/04; B62B3/06; B62B3/0612; B62D; B62D51/00; B62D51/001; B62D51/002; G; G05; G05G; G05G1/00; G05G1/08; G05G1/10; G05G13/00; H01H9/00; H01H9/02; H01H9/06; B62B5/00; B62B5/06; B62B5/063; H01H2009/068; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20256; Y10T74/20268; Y10T74/2028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN A MATERIALS HANDLING TRUCK, A STEERING BAR; A CONTROL SWITCH CASING MOUNTED ON THE FREE END OF SAID STEERING BAR; AN OPERATING HANDLE EXTENDING TRANSVERSELY THROUGH SAID CASING AND MOUNTED FOR ROTATION IN EITHER DIRECTION ABOUT ITS LONGITUDINAL AXIS; SPRING MEANS ENGAGING SAID OPERATING HANDLE AND SAID CASING FOR BIASING SAID HANDLE TOWARD A NEUTRAL POSITION; ACAMMING PLATE AFFIXED TO THE CIRCUMFERENCE OF SAID OPERATING HANDLE WITHIN SAID CASING, SAID CAMMING PLATE HAVING TWO RAISED CAM SURFACES FROMED THEREON, SAID CAM SURFACES LONGITUDINALLY AND CIRCUMFERENTIALLY SPACED APART RELATIVE TO SAID OPERATING HANDLE; TWO BANKS OF THE BLADE SWITCHES HAVING STACKED NORMALLY SPACED APART CONTACT ELEMENTS, SAID BLADE SWITCH BANKS MOUNTED ON THE INTERIOR OF SAID CASING; A CAM FOLLOWER AFFIXED TO EACH SAID BLADE BANK, EACH SAID CAM FOLLOWER BIASED AGAINST ONE OF SAID CAM SURFACES WHEREBY ROTATION OF SAID OPERATING HANDLE IN ONE DIRECTION PROGRESSIVELY CLOSES THE CONTACT ELEMENTS IN ONE OF SAID SWITCH BANKS AND ROTATION OF SAID OPERATING HANDLE IN THE OTHER DIRECTION PROGRESSIVELY CLOSES THE CONTACT ELEMENTS IN THE OTHER OF SAID SWITCH BANKS.
Claim 2
Dependent Claim
179 words
IN A MATERIALS HANDLING TRUCK, A STEERING BAR; A CONTROL SWITCH CASING MOUNTED ON THE FREE END OF SAID STEERING BAR; AN OPERATING HANDLE EXTENDING TRANSVERSELY THROUGH SAID CASING AND MOUNTED FOR ROTATION IN EITHER DIRECTION ABOUT ITS LONGITUDINAL AXIS; SPRING MEANS ENGAGING SAID OPERATING HANDLE AND SAID CASING FOR BIASING SAID HANDLE TOWARD A NEUTRAL POSITION; ACAMMING PLATE AFFIXED TO THE CIRCUMFERENCE OF SAID OPERATING HANDLE WITHIN SAID CASING, SAID CAMMING PLATE HAVING TWO RAISED CAM SURFACES FROMED THEREON, SAID CAM SURFACES LONGITUDINALLY AND CIRCUMFERENTIALLY SPACED APART RELATIVE TO SAID OPERATING HANDLE; TWO BANKS OF THE BLADE SWITCHES HAVING STACKED NORMALLY SPACED APART CONTACT ELEMENTS, SAID BLADE SWITCH BANKS MOUNTED ON THE INTERIOR OF SAID CASING; A CAM FOLLOWER AFFIXED TO EACH SAID BLADE BANK, EACH SAID CAM FOLLOWER BIASED AGAINST ONE OF SAID CAM SURFACES WHEREBY ROTATION OF SAID OPERATING HANDLE IN ONE DIRECTION PROGRESSIVELY CLOSES THE CONTACT ELEMENTS IN ONE OF SAID SWITCH BANKS AND ROTATION OF SAID OPERATING HANDLE IN THE OTHER DIRECTION PROGRESSIVELY CLOSES THE CONTACT ELEMENTS IN THE OTHER OF SAID SWITCH BANKS.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |