Patent US4192364A successfully refreshed from Google Patents.
US4192364A
Expired / Lapsed
US
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Log splitting device
Assignee: Individual
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Filing: 1978-06-05
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Granted: 1980-03-11
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Expires: 1998-06-05
Abstract
Abstract A log splitting device comprising a frame on which two aligned wedges are respectively fixed and movably mounted, a support for positioning a log to be split between the wedges, and a manually operably hydraulic jack for advancing the movable jaw toward the fixed jaw, whereby said log is split.
Inventors
- 👤 Charles A. Findley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:14
CPC Classifications
B; B27; B27L; B27L7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
A log splitting device comprising: a. a frame, b. a pair of confronting knife edged wedges having generally parallel cutting edges carried by said frame, one of said wedges being fixed relative to said frame and the other of said wedges being movable relative to said frame in a direction normal to the cutting edges of said wedges, c. support means on said frame for supporting a log in endwise relation between said wedges, and d. power means carried by said frame and operable to move said movable wedge toward said fixed wedge, whereby said log is split from either or both ends.
Claim 2
Dependent Claim
103 words
A log splitting device comprising: a. a frame, b. a pair of confronting knife edged wedges having generally parallel cutting edges carried by said frame, one of said wedges being fixed relative to said frame and the other of said wedges being movable relative to said frame in a direction normal to the cutting edges of said wedges, c. support means on said frame for supporting a log in endwise relation between said wedges, and d. power means carried by said frame and operable to move said movable wedge toward said fixed wedge, whereby said log is split from either or both ends.
Claim 3
Dependent Claim
17 words
A device as recited in claim 1 wherein said power means comprises a manually operable hydraulic ram.
Claim 4
Dependent Claim
54 words
A device as recited in claim 2 wherein said hydraulic ram is operable to drive said movable wedge toward said fixed wedge and includes means whereby it may be deactivated to permit free movement of said movable wedge, and with the addition of means resiliently biasing said movable wedge away from said fixed wedge.
Claim 5
Dependent Claim
66 words
A device as recited in claim 1 wherein said frame includes a pair of rigid guide rods extending parallel to the direction of movement of said movable wedge, a cross head on which said movable wedge is affixed being slidably mounted on said guide rods for movement therealong, said power means being operable to move said cross head along said guide rods toward said fixed wedge.
Claim 6
Dependent Claim
48 words
A device as recited in claim 4 with the addition of means operable effectively to disconnect said power means from said cross head whereby to permit free movement thereof along said guide rods, and springs yieldably biasing said cross head in a direction away from said fixed wedge.
Claim 7
Dependent Claim
86 words
A device as recited in claim 4 wherein said power means comprises: a. a hydraulic ram fixed in said frame and including a hydraulic cylinder having a piston and piston rod operatively mounted therein, b. a connector joining said piston rod to said cross head, and c. a manually operable hydraulic pump operable to pump hydraulic fluid from one end of said cylinder to the other, whereby to drive the piston of said cylinder in a direction to advance said cross head toward said fixed wedge.
Claim 8
Dependent Claim
51 words
A device as recited in claim 6 with the addition of: a. manually operable valve means operable to interconnect the ends of said cylinder hydraulically whereby to permit free movement of the piston therein, and b. resilient means biasing said cross head yieldably in a direction away from said fixed wedge.
Claim 9
Dependent Claim
75 words
A device as recited in claim 6 wherein said hydraulic cylinder extends generally between said wedge, though laterally offset therefrom, and said piston rod when extended projects beyond said fixed wedge, said piston rod being connected to said cross head by a tensile member extending parallel to and in part coextensively with said cylinder, whereby the required overall length of said device, in a direction parallel to the movement of said movable wedge, is reduced.
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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) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |