US3395732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment control selector
Assignee: Allis Chalmers Corp
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Filing: 1966-05-25
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Granted: 1968-08-06
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Expires: 1986-05-25
Abstract
No abstract record available.
Inventors
- 👤 Samuel T Comfort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:10
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/08; B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/183; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87072; Y10T137/8708
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A CONTROL SYSTEM FOR A MULTIPLE FUNCTION MATERIAL HANDLING ATTACHMENT HAVING A PLURALITY OF FLUID MOTORS FOR OPENING SAME, THE COMBINATION COMPRISING: CONTROL VALVE SHIFTABLE BETWEEN NEUTRAL AND ATTACHMENT OPERATING POSITIONS, A MANUALLY OPERATED CONTROL LEVER CONNECTED TO SAID CONTROL VALVE HAVING A KNOB PART PIVOTALLY CONNECTED TO AN END PART OF SAID LEVER, WALLS ON SAID KNOB PART DEFINING AN INTERIOR CAVITY, AN ELECTRICALLY OPERATED SELECTOR VALVE SHIFTABLE TO A PLURALITY OF CONTROL POSITIONS, ELECTRIC MEANS CONTROLLING SAID SELECTOR VALVE INCLUDING A CONTROL SWITCH FOR SAID SELECTOR VALVE DISPOSED WITHIN SAID CAVITY AND SECURED TO ONE OF SAID PARTS, SAID SWITCH INCLUDING A SWITCH ACTUATING ELEMENT SHIFTABLE BETWEEN A PLURALITY OF CONTROL POSITIONS, AND ABUTMENT MEANS ON THE OTHER OF SAID PARTS IN CONFRONTING RELATION TO SAID ACTUATING ELEMENT, SAID ABUTMENT MEANS ENGAGING SAID ACTUATING ELEMENT AND SHIFTING SAME UPON SAID KNOB PART BEING PIVOTED A PREDETERMINED EXTENT RELATIVE TO SAID END PART.
Claim 2
Dependent Claim
155 words
IN A CONTROL SYSTEM FOR A MULTIPLE FUNCTION MATERIAL HANDLING ATTACHMENT HAVING A PLURALITY OF FLUID MOTORS FOR OPENING SAME, THE COMBINATION COMPRISING: CONTROL VALVE SHIFTABLE BETWEEN NEUTRAL AND ATTACHMENT OPERATING POSITIONS, A MANUALLY OPERATED CONTROL LEVER CONNECTED TO SAID CONTROL VALVE HAVING A KNOB PART PIVOTALLY CONNECTED TO AN END PART OF SAID LEVER, WALLS ON SAID KNOB PART DEFINING AN INTERIOR CAVITY, AN ELECTRICALLY OPERATED SELECTOR VALVE SHIFTABLE TO A PLURALITY OF CONTROL POSITIONS, ELECTRIC MEANS CONTROLLING SAID SELECTOR VALVE INCLUDING A CONTROL SWITCH FOR SAID SELECTOR VALVE DISPOSED WITHIN SAID CAVITY AND SECURED TO ONE OF SAID PARTS, SAID SWITCH INCLUDING A SWITCH ACTUATING ELEMENT SHIFTABLE BETWEEN A PLURALITY OF CONTROL POSITIONS, AND ABUTMENT MEANS ON THE OTHER OF SAID PARTS IN CONFRONTING RELATION TO SAID ACTUATING ELEMENT, SAID ABUTMENT MEANS ENGAGING SAID ACTUATING ELEMENT AND SHIFTING SAME UPON SAID KNOB PART BEING PIVOTED A PREDETERMINED EXTENT RELATIVE TO SAID END PART.
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) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |