Patent US3074434A successfully refreshed from Google Patents.
US3074434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor control
Assignee: Joy Manufacturing Co
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Filing: 1958-11-28
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Granted: 1963-01-22
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Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hughes
- 👤 Norman A Leist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:32
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/022; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86501; Y10T137/86928; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A CONTROL FOR OBTAINING SEQUENTIAL OPERATION OF A MULTI-STAGE COMPRESSOR COMPRISING, A HOUSING HAVING AN ELONGATED PASSAGEWAY WITH AN OPENING CONNECTED TO ATMOSPHERE THEREIN, A PLUNGER SUPPORTED WITHIN SAID PASSAGEWAY FOR MOVEMENT ALONG A PATH IN SAID PASSAGEWAY CONTROL DEVICES MOUNTED IN SAID HOUSING HAVING MOVABLE ACTUATING MEANS EXTENDING INTO SAID PASSAGEWAY AND THE PATH OF MOVEMENT OF SAID PLUNGER RESPECTIVELY, SAID ACTUATING MEANS BEING SPACED LONGITUDINALLY WITH RESPECT TO EACH OTHER ALONG SAID PATH OF MOVEMENT, AND SAID PLUNGER HAVING A PORTION ENGAGEABLE WITH EACH OF SAID ACTUATING MEANS TO HOLD ALL OF SAID CONTROL DEVICES IN ONE OPERATING POSITION WHICH PORTION IS MOVABLE OUT OF ENGAGEMENT WITH SAID ACTUATING MEANS TO PERMIT SAID ACTUATING MEANS TO ASSUME ANOTHER OPERATING POSITION SEQUENTIALLY WITH REFERENCE TO THE LONGITUDINAL SPACING OF SAID ACTUATING MEANS TO EACH OTHER AND TO SAID PATH.
Claim 2
Dependent Claim
140 words
A CONTROL FOR OBTAINING SEQUENTIAL OPERATION OF A MULTI-STAGE COMPRESSOR COMPRISING, A HOUSING HAVING AN ELONGATED PASSAGEWAY WITH AN OPENING CONNECTED TO ATMOSPHERE THEREIN, A PLUNGER SUPPORTED WITHIN SAID PASSAGEWAY FOR MOVEMENT ALONG A PATH IN SAID PASSAGEWAY CONTROL DEVICES MOUNTED IN SAID HOUSING HAVING MOVABLE ACTUATING MEANS EXTENDING INTO SAID PASSAGEWAY AND THE PATH OF MOVEMENT OF SAID PLUNGER RESPECTIVELY, SAID ACTUATING MEANS BEING SPACED LONGITUDINALLY WITH RESPECT TO EACH OTHER ALONG SAID PATH OF MOVEMENT, AND SAID PLUNGER HAVING A PORTION ENGAGEABLE WITH EACH OF SAID ACTUATING MEANS TO HOLD ALL OF SAID CONTROL DEVICES IN ONE OPERATING POSITION WHICH PORTION IS MOVABLE OUT OF ENGAGEMENT WITH SAID ACTUATING MEANS TO PERMIT SAID ACTUATING MEANS TO ASSUME ANOTHER OPERATING POSITION SEQUENTIALLY WITH REFERENCE TO THE LONGITUDINAL SPACING OF SAID ACTUATING MEANS TO EACH OTHER AND TO SAID PATH.
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |