Patent US1274957A successfully refreshed from Google Patents.
US3371554A
Expired / Lapsed
US
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Integral crank and phased counterweight arm
Assignee: Ingersoll Rand Oilfield Products Co
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Filing: 1965-10-18
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Granted: 1968-03-05
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Harold E Mccray
- 👤 Rue S Hestand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:02
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; F16; F16F; F16F15/00; F16F15/28; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182; Y10T74/21; Y10T74/2173; Y10T74/2179
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN INTEGRAL CRANK AND COUNTERWEIGHT ARM COMPRISING A MAIN ELONGATED BODY PORTION HAVING A CRANK SHAFT FITTING NEAR ONE END AND A GROOVE IN EITHER LONGITUDINAL EDGE FOR MOUNTING COUNTERWEIGHTS THEREON IN SLIDABLY ADJUSTABLE POSITIONS THEREALONG AND, RIGIDLY JOINED TO AND FIRMLY ROOTED IN ONE SIDE FACE OF SAID MAIN BODY PORTION NEAR THE CRANKSHAFT END THEREOF, A RAISED, RIGID, SKIRT-LIKE PROJECTION WHICH RISES FROM ITS FIRMLY ROOTED CONNECTION WITH SAID BODY PORTION AND TRANSLATES INTO A MAJOR FLAT SECTION WHICH IS SPACED APART FROM SAID BODY PORTION AND HAS FITTINGS THEREIN FOR ATTACHING WRIST PIN ASSEMBLIES THERETO AT A SUBSTANTIAL ACUTE ANGULAR CRANK POSITION RELATIVE TO THE EFFECTIVE TORQUE ARM OF SAID COUNTERWEIGHTS.
Claim 2
Dependent Claim
114 words
AN INTEGRAL CRANK AND COUNTERWEIGHT ARM COMPRISING A MAIN ELONGATED BODY PORTION HAVING A CRANK SHAFT FITTING NEAR ONE END AND A GROOVE IN EITHER LONGITUDINAL EDGE FOR MOUNTING COUNTERWEIGHTS THEREON IN SLIDABLY ADJUSTABLE POSITIONS THEREALONG AND, RIGIDLY JOINED TO AND FIRMLY ROOTED IN ONE SIDE FACE OF SAID MAIN BODY PORTION NEAR THE CRANKSHAFT END THEREOF, A RAISED, RIGID, SKIRT-LIKE PROJECTION WHICH RISES FROM ITS FIRMLY ROOTED CONNECTION WITH SAID BODY PORTION AND TRANSLATES INTO A MAJOR FLAT SECTION WHICH IS SPACED APART FROM SAID BODY PORTION AND HAS FITTINGS THEREIN FOR ATTACHING WRIST PIN ASSEMBLIES THERETO AT A SUBSTANTIAL ACUTE ANGULAR CRANK POSITION RELATIVE TO THE EFFECTIVE TORQUE ARM OF SAID COUNTERWEIGHTS.
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |