Patent US2734004A successfully refreshed from Google Patents.
US4077191A
Expired / Lapsed
US
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Filament trimmer/mower
Assignee: Individual
•
Filing: 1976-07-21
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Granted: 1978-03-07
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Expires: 1996-07-21
Abstract
Abstract A filament-trimmer/mower having a wheel mechanism supported frame articulated to provide semi-universal adjustment of the filament-to-work aspect through independent but co-acting side-by-side and fore-and-aft tip mechanisms, shielding being carried by the wheel support mechanism permitting the frame to move relative to the shielding for better access for trimming when the frame is tipped; a lever-actuated dynamic feed for the filament as needed for replacement of expended portions while operating is provided.
Inventors
- 👤 Charles B. Pittinger, Sr.
- 👤 Charles B. Pittinger, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:04
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/416
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
In a filament trimmer having a filament drive means carrying a filament, means for fixing filament cutting-length, a frame mounting the filament drive means and filament, a handle extending rearwardly and upwardly from the frame, and means for movably supporting the frame, the improvement comprising: means for supporting the frong and rear ends of the filament trimmer, including a front wheel and axle assembly and a rear wheel and axle assembly, means, connected with the frame and coacting with the handle, for rotating the frame about a longitudinal axis for edging, including: a first connection mounting the front wheel-and-axle assembly pivotally with respect to the frame, and a second connection mounting the rear wheel-and-axle assembly pivotally with respect to the frame.
Claim 2
Dependent Claim
121 words
In a filament trimmer having a filament drive means carrying a filament, means for fixing filament cutting-length, a frame mounting the filament drive means and filament, a handle extending rearwardly and upwardly from the frame, and means for movably supporting the frame, the improvement comprising: means for supporting the frong and rear ends of the filament trimmer, including a front wheel and axle assembly and a rear wheel and axle assembly, means, connected with the frame and coacting with the handle, for rotating the frame about a longitudinal axis for edging, including: a first connection mounting the front wheel-and-axle assembly pivotally with respect to the frame, and a second connection mounting the rear wheel-and-axle assembly pivotally with respect to the frame.
Claim 3
Dependent Claim
67 words
In a filament trimmer as recited in claim 1, at least one of said wheel-and-axle assemblies having a shield for taking the place of frame shielding, mounted for pivotal movement with said wheel-and-axle assembly relative to the frame, said shield extending transversely of and forwardly on each side along a portion of the frame and being proportioned for continued shielding when the frame is tipped relative thereto.
Claim 4
Dependent Claim
24 words
In a filament trimmer as recited in claim 1, all said first and second connections located generally in fore-and-aft alignment centrally of the frame.
Claim 5
Dependent Claim
43 words
In a filament trimmer as recited in claim 1, at least one of said first and second connections having means for maintaining the frame in fixed attitude for trimming by fixing the rotational position of the frame relative to a said wheel-and-axle assembly.
Claim 6
Dependent Claim
30 words
In a filament trimmer as recited in claim 1, additionally, means for rotating the frame about a transverse axis for adjusting the trimming aspect of the filament in fore-and-aft direction.
Claim 7
Dependent Claim
80 words
In a filament trimmer as recited in claim 5, the means for rotating the frame about a transverse axis including a member having transverse axis pivotal connection to the handle, means for adjusting the pivotal connection in angle, said member comprising a yoke mounting the first wheel-and-axle connection, and the means for adjusting including a crank at the upper end of the handle with a threaded end extending downward into a threaded journal on the yoke rearward of said handle.
Claim 8
Dependent Claim
87 words
In a filament trimmer as recited in claim 1, the means for fixing the filament length including a filament supply means for conducting filament from the supply through the cutting head, a filament lock including a tapered recess and a tapered member fitting thereinto with the filament passing between the tapered recess and the tapered member, means for biasing the tapered member into the tapered recess, and means for remotely forcing apart the tapered recess and the tapered member, thereby releasing the filament from the filament lock.
Claim 9
Dependent Claim
28 words
In a filament trimmer as recited in claim 7, and a filament brake comprising plural resilient fingers at the end of the tapered member and engaging the filament.
Claim 10
Dependent Claim
14 words
In a filament trimmer as recited in claim 8, means for adjusting said bias.
Claim 11
Dependent Claim
19 words
In a filament trimmer as recited in claim 1; and means for adjusting rear-wheel height relative to the frame.
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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |