US4269372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cutting vegetation
Assignee: White Consolidated Industries Inc
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Filing: 1979-08-17
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Granted: 1981-05-26
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Expires: 1999-08-17
Abstract
Abstract Apparatus for cutting vegetation with a rotating head having a ball member portion and carrying non-metallic cutting line extended into the cutting plane by pushing the ball member against the ground while rotating the head. The ball member portion moves inwardly and a spool carrying coiled cutting line forces a predetermined length of line out of the head. After the cutting line length is extended, the head is secured automatically to the spool for further rotation with the driven spool. A cover is releasably secured to the head by a twist-lock connection to allow the spool to be removed from the head for rewinding, etc. Movement of the spool with respect to the head is regulated by uniform interlocking, straight teeth that are rugged, long wearing and provide positive control without any possibility of "free wheeling" with respect to the spool and the head.
Inventors
- 👤 James L. Kwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:35
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/416; A01D34/4161; A01D34/4163
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
69 words
As a subcombination, a spool-like member having a core portion and at least two spaced apart flange portions extending radially outwardly of the periphery thereof, a flexible non-metallic line member wound in coils about said core portion between said flange portions, and an annular band of a synthetic plastic foam located between said flange portions and having the inner surface of said band in contacting relationship to said coils.
Claim 2
Dependent Claim
69 words
As a subcombination, a spool-like member having a core portion and at least two spaced apart flange portions extending radially outwardly of the periphery thereof, a flexible non-metallic line member wound in coils about said core portion between said flange portions, and an annular band of a synthetic plastic foam located between said flange portions and having the inner surface of said band in contacting relationship to said coils.
Claim 3
Dependent Claim
23 words
The spool-like member of claim 1 wherein said flange portions each have a plurality of straight radial teeth of uniform width and height.
Claim 4
Dependent Claim
27 words
The spool-like member of claim 1 wherein said line member is wound in coils about said case portion in the direction of rotation of said spool-like member.
Claim 5
Dependent Claim
26 words
The spool-like member of claim 1 wherein said annular band is transversed by said line member with its free end ending outwardly of said annular band.
Claim 6
Dependent Claim
14 words
The spool like member of claim 4 wherein said annular band is urethane foam.
Claim 7
Dependent Claim
134 words
As a subcombination, a spool-like member having a core portion and at least two spaced apart flange portions extending radially outwardly of the periphery thereof, (a) said flange portions each have a plurality of straight radial teeth of uniform width and heighth; (b) a flexible non-metallic line member wound in coils about said core portion between said core portion between said flange portion, (c) said line member wound in coils about said core portion in the direction of rotation of said spool like member; (d) an annular band of synthetic plastic foam located between said flange portions and having the inner surface of said band in contacting relationship to said coils, and (e) said line member extending through said annular band with said line member having a free end exterior of said annular band.
Claim 8
Dependent Claim
134 words
As a subcombination, a spool-like member having a core portion and at least two spaced apart flange portions extending radially outwardly of the periphery thereof, (a) said flange portions each have a plurality of straight radial teeth of uniform width and heighth; (b) a flexible non-metallic line member wound in coils about said core portion between said core portion between said flange portion, (c) said line member wound in coils about said core portion in the direction of rotation of said spool like member; (d) an annular band of synthetic plastic foam located between said flange portions and having the inner surface of said band in contacting relationship to said coils, and (e) said line member extending through said annular band with said line member having a free end exterior of said annular band.
Claim 9
Dependent Claim
13 words
The spool-like member of claim 6 wherein said annular band is urethane foam.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |