US4074447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stump cutting and precision digging apparatus
Assignee: Individual
•
Filing: 1976-08-16
•
Granted: 1978-02-21
•
Expires: 1996-08-16
Abstract
Abstract A stump cutter and earth ripper device having a balanced channel frame chassis, the device including a forward centrally disposed cutting wheel having a plurality of radially extending cutting teeth circumferentially mounted thereon. The frame is supported by a pair of pneumatic tires mounted on individually adjustable and telescopic axles. A unique and rotationally adjustable handle provides accurate control of the device during operation.
Inventors
- 👤 Norman E. Shivers, Jr.
- 👤 David E. Shivers
- 👤 Paul N. Shivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:59
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/06; A01G23/067
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
103 words
A stump cutting and digging apparatus comprising in combination: a main supporting frame of a vehicle member, the frame having an integral elongated channel which acts as a guide for controlling cut material; a cutting wheel mounted on the frame and longitudinally aligned with the channel for rotation about a horizontal axis transverse to said channel, said cutting wheel having a plurality of radially extending cutting teeth circumferentially mounted on the cutting wheel; and drive means for powering said cutting wheel to cut material and to convey a majority of the cut material through the channel of said frame of the vehicle member.
Claim 2
Dependent Claim
103 words
A stump cutting and digging apparatus comprising in combination: a main supporting frame of a vehicle member, the frame having an integral elongated channel which acts as a guide for controlling cut material; a cutting wheel mounted on the frame and longitudinally aligned with the channel for rotation about a horizontal axis transverse to said channel, said cutting wheel having a plurality of radially extending cutting teeth circumferentially mounted on the cutting wheel; and drive means for powering said cutting wheel to cut material and to convey a majority of the cut material through the channel of said frame of the vehicle member.
Claim 3
Dependent Claim
20 words
The apparatus as defined in claim 1 further including a pair of wheels which balance and medially support said frame.
Claim 4
Dependent Claim
24 words
The apparatus as defined in claim 2 wherein each wheel of said pair of wheels is mounted on a separate and individually adjustable axle.
Claim 5
Dependent Claim
21 words
The apparatus as defined in claim 3 wherein said individually adjustable axle includes means for telescoping the length of said axle.
Claim 6
Dependent Claim
18 words
The apparatus as defined in claim 1 and further including a rotatably adjustable handle mounted on said frame.
Claim 7
Dependent Claim
53 words
The apparatus as defined in claim 5 wherein said rotatably adjustable handle includes: a pair of support plates mounted on said frame, one of said plates having apertures in the surface thereof; and the other of said plates having a pin which engages said apertures to lock said handle in a selected position.
Claim 8
Dependent Claim
78 words
The apparatus as defined in claim 5 wherein said rotatably adjustable handle includes: a pair of support plates mounted on said frame, both of said plates having bead-like projections on the engaging surfaces thereof; and a fibrous padding interposed between the engaging surfaces of said plates; and means for applying a compressive force to said pair of support plates whereby said bead-like projections in contact with said fibrous padding effect an adjustable securement of the support plate surfaces.
Claim 9
Dependent Claim
21 words
The apparatus as defined in claim 1 wherein said drive means includes at least one drive belt and a chain element.
Claim 10
Dependent Claim
22 words
The apparatus as defined in claim 1 wherein said cutting teeth are mounted on said cutting wheel by compressively adjustable clamp elements.
Claim 11
Dependent Claim
50 words
The apparatus as defined in claim 1 wherein said cutting teeth are mounted in pairs on said cutting wheel, said cutting wheel having a planar side surface, and one cutting tooth of the pair of teeth is oriented at a 45° angle from the planar surface of said cutting wheel.
Claim 12
Dependent Claim
42 words
The apparatus as defined in claim 10 wherein the angled tooth is mounted to project 1/4 inch beyond the periphery of said cutting wheel and the other cutting tooth is mounted to project 3/16 inch beyond the periphery of said cutting wheel.
Claim 13
Dependent Claim
109 words
A stump cutting and digging apparatus comprising in combination: an elongate chassis having a forward end, an intermediate portion, a rear end and spaced wheels supporting the intermediate portion of the chassis above ground level, said chassis defining a channel for guiding cut material away from the vicinity of the forward end of said chassis; a power driven cutting wheel mounted for rotation about a horizontal axis transverse to said channel on the forward end of the chassis, and longitudinally aligned with said channel said cutting wheel having a plurality of radially extending cutting teeth circumferentially mounted on the cutting wheel; and drive means for powering said cutting wheel.
Claim 14
Dependent Claim
109 words
A stump cutting and digging apparatus comprising in combination: an elongate chassis having a forward end, an intermediate portion, a rear end and spaced wheels supporting the intermediate portion of the chassis above ground level, said chassis defining a channel for guiding cut material away from the vicinity of the forward end of said chassis; a power driven cutting wheel mounted for rotation about a horizontal axis transverse to said channel on the forward end of the chassis, and longitudinally aligned with said channel said cutting wheel having a plurality of radially extending cutting teeth circumferentially mounted on the cutting wheel; and drive means for powering said cutting wheel.
Claim 15
Dependent Claim
17 words
The apparatus of claim 12 wherein the spaced wheels are each mounted on an individually adjustable axle.
Claim 16
Dependent Claim
31 words
The apparatus of claim 13 wherein said individually adjustable axle includes means for extending the length of said axle and further includes means for varying the height of the mounted wheel.
Claim 17
Dependent Claim
20 words
The apparatus of claim 12 and further including a rotatably adjustable handle mounted on the forward end of said chassis.
Claim 18
Dependent Claim
33 words
The apparatus of claim 12 wherein said drive means includes at least one drive belt and a chain element for translating rotation from a drive shaft of an engine mounted on said chassis.
Claim 19
Dependent Claim
28 words
The apparatus of claim 12 wherein said cutting teeth are mounted on said cutting wheel to project at least 1/4 inch beyond the periphery of said cutting wheel.
Claim 20
Dependent Claim
28 words
The apparatus of claim 12 wherein said cutting teeth are mounted on said cutting wheel by compressively adjustable set screws which engage a portion of the cutting teeth.
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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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |