US3382771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load release inhibitor for load-handling apparatus
Assignee: Cascade Corp
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Filing: 1966-09-12
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Granted: 1968-05-14
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Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Nutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:46
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/01; B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/20; B66F9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN LOAD-HANDLING APPARATUS INCLUDING ELEVATABLE FLUID-OPERATED LOAD-CLAMPING MEANS FOR CLAMPING AGAINST AND RELEASING A LOAD, FIRST FLUID-ACTUATED MOTOR MEANS OPERATIVELY CONNECTED TO SAID LOAD-CLAMPING MEANS ACTUATABLE TO PRODUCE CLAMPING AND RELEASING OF A LOAD BY SAID LOADCLAMPING MEANS, AND A SECOND FLUID-ACTUATED MOTOR MEANS OPERATIVELY CONNECTED TO SAID LOAD-CLAMPING MEANS FOR RAISING AND LOWERING THE SAME, CONDUIT MEANS FOR SUPPLYING FLUID TO AND EXHAUSTING IT FROM SAID FIRST AND SECOND MOTOR MEANS, A CONTROL VALVE OPERATIVELY CONNECTED TO SAID CONDUIT MEANS ADJUSTABLE TO EFFECT CLAMPING AND RELEASING OF A LOAD BY SAID LOAD-CLAMPING MEANS BY CONTROLLING THE FLOW OF FLUID TO SAID FIRST MOTOR MEANS, AND A PRESSURE-SENSITIVE DEVICE OPERATIVELY CONNECTED TO SAID CONDUIT MEANS RESPONSIVE TO THE PRESSURE OF FLUID IN SAID SECOND MOTOR MEANS OPERABLE, WITH SAID LOADCLAMPING MEANS ELEVATED AND SAID CONTROL VALVE ADJUSTED TO EFFECT RELEASING OF A LOAD BY SAID LOADCLAMPING MEANS, AND SAID PRESSURE EXCEEDING A PRE-
Claim 2
Dependent Claim
153 words
IN LOAD-HANDLING APPARATUS INCLUDING ELEVATABLE FLUID-OPERATED LOAD-CLAMPING MEANS FOR CLAMPING AGAINST AND RELEASING A LOAD, FIRST FLUID-ACTUATED MOTOR MEANS OPERATIVELY CONNECTED TO SAID LOAD-CLAMPING MEANS ACTUATABLE TO PRODUCE CLAMPING AND RELEASING OF A LOAD BY SAID LOADCLAMPING MEANS, AND A SECOND FLUID-ACTUATED MOTOR MEANS OPERATIVELY CONNECTED TO SAID LOAD-CLAMPING MEANS FOR RAISING AND LOWERING THE SAME, CONDUIT MEANS FOR SUPPLYING FLUID TO AND EXHAUSTING IT FROM SAID FIRST AND SECOND MOTOR MEANS, A CONTROL VALVE OPERATIVELY CONNECTED TO SAID CONDUIT MEANS ADJUSTABLE TO EFFECT CLAMPING AND RELEASING OF A LOAD BY SAID LOAD-CLAMPING MEANS BY CONTROLLING THE FLOW OF FLUID TO SAID FIRST MOTOR MEANS, AND A PRESSURE-SENSITIVE DEVICE OPERATIVELY CONNECTED TO SAID CONDUIT MEANS RESPONSIVE TO THE PRESSURE OF FLUID IN SAID SECOND MOTOR MEANS OPERABLE, WITH SAID LOADCLAMPING MEANS ELEVATED AND SAID CONTROL VALVE ADJUSTED TO EFFECT RELEASING OF A LOAD BY SAID LOADCLAMPING MEANS, AND SAID PRESSURE EXCEEDING A PRE-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |