Patent US4141396A successfully refreshed from Google Patents.
US4141396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic log splitter
Assignee: Individual
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Filing: 1977-09-12
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Granted: 1979-02-27
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Expires: 1997-09-12
Abstract
Abstract A self-contained, or externally actuated, hydraulic log splitter which includes a frame on which is slidably mounted an assembly of a push plate secured at one end to a reversible hydraulic cylinder and at the other to a splitting table carrying logs which is pushed against a straight blade to split the logs. A square steel bar is fixed centrally on the push plate along its entire height to provide in-line thrust at all times even when the ends of the logs are uneven. A gas engine or the hyraulic system of a tractor are connected to a pump mounted on one side of the frame to provide power to the cylinder. Elevated guide rails are fixed to the sides of the table to retain the logs. A hydraulic control valve allows movement only as long as it is operated.
Inventors
- 👤 James J. McCallister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:53
CPC Classifications
B; B27; B27L; B27L7/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A log splitter comprising a frame; a straight splitting blade fixed vertically to one end of said frame; a table member adapted to support logs to be split, said table member being slidably mounted on said frame; said table member having an elongated blade clearance slot therein; log-abutment means fixed to said table and adapted to push one end of the log on said table so as to engage the opposite end against said blade; power transfer means operatively connected to said abutment means to reciprocally move same to force said log through said blade; and retaining means on each side of said table extending outwardly and upwardly therefrom to prevent logs on said table from falling therefrom.
Claim 2
Dependent Claim
118 words
A log splitter comprising a frame; a straight splitting blade fixed vertically to one end of said frame; a table member adapted to support logs to be split, said table member being slidably mounted on said frame; said table member having an elongated blade clearance slot therein; log-abutment means fixed to said table and adapted to push one end of the log on said table so as to engage the opposite end against said blade; power transfer means operatively connected to said abutment means to reciprocally move same to force said log through said blade; and retaining means on each side of said table extending outwardly and upwardly therefrom to prevent logs on said table from falling therefrom.
Claim 3
Dependent Claim
32 words
The invention as recited in claim 1, wherein said power transfer means include a reversible hydraulic cylinder connectable to a tractor power system through a manually actuated valve mounted on said frame.
Claim 4
Dependent Claim
49 words
The invention as recited in claim 1, wherein said power transfer means include a reversible hydraulic cylinder, an engine mounted on said frame, a hydraulic pump operated by said engine; a manually actuated valve for operating said pump, and a three point hitch frame whereby said splitter is self-contained.
Claim 5
Dependent Claim
25 words
The invention as recited in claim 1, wherein said abutment means comprises a push plate extending vertically from said frame and secured to said table.
Claim 6
Dependent Claim
19 words
The invention as recited in claim 4, wherein said push plate is about 3/4 as high as said blade.
Claim 7
Dependent Claim
41 words
The invention as recited in claim 4, further including a square metallic member secured centrally of said push plate and adapted to engage a log so as to provide central in-line thrust even where the ends of the logs are uneven.
References Cited (Backward Citations)
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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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |