US4451024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Felling wedge
Assignee: BEAVER STATE PLASTICS Inc dba WEDGE TECHNOLOGY
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Filing: 1983-01-13
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Granted: 1984-05-29
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Expires: 2003-01-13
Abstract
Abstract A felling wedge comprising a main body portion of plastic material and a cap of hard metal material. The cap is secured to the plastic by a stud which depends from the cap and is embedded in the plastic. The cap is designed to receive the impact blows of a driving mall whereas the plastic body portion is designed to receive the bite of a cutting chain without undully dulling the cutting edges thereof.
Inventors
- 👤 Larry M. Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:05
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/099
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A felling wedge for use in conjunction with a cutting saw in felling and bucking trees comprising: a main body portion having a narrow end and a butt end defining a planar surface of a determined dimension and sides that diverge from the narrow end to the butt end, and a cap having a planar surface of said determined dimension and a lug depending therefrom, said planar surfaces of the butt end and cap being in superimposed abuttment with said lug being embedded in the main body portion at the butt end thereof to permanently secure the cap to the butt end of the main body portion, said main body portion constructed of a material softer than the material of the cap whereby the main body portion is relatively more compatible to being cut by the chain saw and the cap is relatively more compatible to being struck by a driving mall.
Claim 2
Dependent Claim
152 words
A felling wedge for use in conjunction with a cutting saw in felling and bucking trees comprising: a main body portion having a narrow end and a butt end defining a planar surface of a determined dimension and sides that diverge from the narrow end to the butt end, and a cap having a planar surface of said determined dimension and a lug depending therefrom, said planar surfaces of the butt end and cap being in superimposed abuttment with said lug being embedded in the main body portion at the butt end thereof to permanently secure the cap to the butt end of the main body portion, said main body portion constructed of a material softer than the material of the cap whereby the main body portion is relatively more compatible to being cut by the chain saw and the cap is relatively more compatible to being struck by a driving mall.
Claim 3
Dependent Claim
29 words
A felling wedge as defined in claim 1 wherein the main body portion is constructed of a tough moldable plastic and the cap is constructed of a hard metal.
Claim 4
Dependent Claim
75 words
A felling wedge as defined in claim 1 wherein a head portion is formed at the butt end of the wedge, said head portion comprising sides that are inset from said diverging sides, and the cap being confined within the inset sides whereby the kerf walls of the tree being cut are held apart by the diverging sides of the wedge and thereby spaced from the inset sides of the head portion of the cap.
Claim 5
Dependent Claim
16 words
A felling wedge as defined in claim 2 wherein the cap is constructed of hardened steel.
Claim 6
Dependent Claim
53 words
A felling wedge as defined in claim 4 wherein the lug is provided with a multiple of holes and the lug is embedded in the plastic while in molten form whereby fingers of plastic material pass through the lug openings upon setting up to firmly secure the cap to the main body portion.
Claim 7
Dependent Claim
72 words
A felling wedge as defined in claim 4 wherein the lug is a threaded bolt that is embedded in the plastic by providing a close fitting hole in the plastic and heating the bolt just prior to inserting it into the hole so as to heat and melt the plastic, causing it to flow into the threads of the bolt and thereby secure the cap to the main body portion upon cooling.
Claim 8
Dependent Claim
40 words
A felling wedge as defined in claim 4 wherein the thickness of the steel cap is at least a quarter inch and the planar dimensions are mated to the corresponding dimensions of the butt end of the main body portion.
References Cited (Backward Citations)
US188376A
Cited
US3185442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |