US3242955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Log splitter
Assignee: Detroit Tap and Tool Co
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Filing: 1964-07-30
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Granted: 1966-03-29
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Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Lennart M Hellstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:31
CPC Classifications
B; B27; B27L; B27L7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A LOG-SPLITTING APPARATUS COMPRISING A FRAME, SUPPORT MEANS THEREON FOR SUPPORTING A LOG TO BE SPLIT, A FIRST SPLITTING ELEMENT RIGIDLY SECURED TO SAID FRAME ADJACENT SAID SUPPORT MEANS, A SECOND SPLITTING ELEMENT MOUNTED ON SAID FRAME FOR RECIPROCATING MOVEMENT ACROSS SAID SUPPORT MEANS TOWARD AND AWAY FROM SAID FIRST ELEMENT, ONE OF SAID ELEMENTS HAVING A WEDGE-SHAPED SURFACE POINTING TOWARDS SAID OTHER ELEMENT AND THE OTHER ELEMENT HAVING A RELATIVELY FLAT LOG-ABUTTING FACE, A FLUID MOTOR FOR RECIPROCATING SAID SECOND ELEMENT, A DRIVEN PUMP FOR SUPPLYING FLUID UNDER PRESSURE TO SAID FLUID MOTOR, VALVE MEANS FOR CONTROLLING THE SUPPLY OF FLUID FROM SAID PUMP TO SAID MOTOR, AND REGULATING MEANS RESPONSIVE TO THE LOAD ON SAID MOTOR FOR DECREASING THE EFFECTIVE DISPLACEMENT OF SAID PUMP WHEN SAID LOAD EXCEEDS A PREDETERMINED LEVEL WHEREBY ADDITIONAL PRESSURE IS AVAILABLE FOR OVERCOMING SAID INCREASED LOAD.
Claim 2
Dependent Claim
143 words
A LOG-SPLITTING APPARATUS COMPRISING A FRAME, SUPPORT MEANS THEREON FOR SUPPORTING A LOG TO BE SPLIT, A FIRST SPLITTING ELEMENT RIGIDLY SECURED TO SAID FRAME ADJACENT SAID SUPPORT MEANS, A SECOND SPLITTING ELEMENT MOUNTED ON SAID FRAME FOR RECIPROCATING MOVEMENT ACROSS SAID SUPPORT MEANS TOWARD AND AWAY FROM SAID FIRST ELEMENT, ONE OF SAID ELEMENTS HAVING A WEDGE-SHAPED SURFACE POINTING TOWARDS SAID OTHER ELEMENT AND THE OTHER ELEMENT HAVING A RELATIVELY FLAT LOG-ABUTTING FACE, A FLUID MOTOR FOR RECIPROCATING SAID SECOND ELEMENT, A DRIVEN PUMP FOR SUPPLYING FLUID UNDER PRESSURE TO SAID FLUID MOTOR, VALVE MEANS FOR CONTROLLING THE SUPPLY OF FLUID FROM SAID PUMP TO SAID MOTOR, AND REGULATING MEANS RESPONSIVE TO THE LOAD ON SAID MOTOR FOR DECREASING THE EFFECTIVE DISPLACEMENT OF SAID PUMP WHEN SAID LOAD EXCEEDS A PREDETERMINED LEVEL WHEREBY ADDITIONAL PRESSURE IS AVAILABLE FOR OVERCOMING SAID INCREASED LOAD.
References Cited (Backward Citations)
US3077214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |