US3740099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof shaving machine
Assignee: Individual
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Filing: 1971-11-08
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Granted: 1973-06-19
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Expires: 1991-11-08
Abstract
Abstract A machine for shaving expanded plastic on a roof structure wherein the machine includes a rotatable drum extending transversely of a frame carrying front and rear ground engaging wheels. The rear wheels are vertically adjustable to vary the thickness of the drum cut. The rear wheels are connected to the frame by a pair of pivotal arms and a vertically adjustable adjustment unit is connected between the frame and an axle from which the rear wheels are mounted. An engine is carried on the frame above the drum. A plurality of spaced apart longitudinally extending scarfing blades are provided on the exterior surface of the drum.
Inventors
- 👤 J Lenzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:52
CPC Classifications
E; E04; E04D; E04D15/00; E04D15/07; E04D11/00; E04D11/02; E04D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A shaving machine comprising, a frame having forward and rearward ground engaging wheels, a rearwardly and upwardly extending handle connected to said frame, a powered rotatable shaving drum on said frame between said forward and rearward wheels, and said drum having cutting means thereon, said cutting means including longitudinally extending scarfing blades, said rearward wheels having height adjustment means to vary the cutting depth of said shaving drum, the axis of rotation of said forward and rearward wheels and said shaving drum being disposed in parallel relationship, and said arms being pivotally connected to said frame rearwardly of said rearward wheels, an engine being mounted on said frame above said shaving drum to power said shaving drum, and said height adjustment means for said rearward wheels including an axle connected to a pair of arms pivotally connected to said frame rearwardly of said rearward wheels and a telescoping adjustment unit is connected between said axle and said frame for pivoting said arms thereby selectively varying the height of said shaving drum above a support and work surface, said adjustment unit being manually adjustable and including a threaded shaft received in a threaded sleeve and said threaded shaft being manually rotatable.
Claim 2
Dependent Claim
200 words
A shaving machine comprising, a frame having forward and rearward ground engaging wheels, a rearwardly and upwardly extending handle connected to said frame, a powered rotatable shaving drum on said frame between said forward and rearward wheels, and said drum having cutting means thereon, said cutting means including longitudinally extending scarfing blades, said rearward wheels having height adjustment means to vary the cutting depth of said shaving drum, the axis of rotation of said forward and rearward wheels and said shaving drum being disposed in parallel relationship, and said arms being pivotally connected to said frame rearwardly of said rearward wheels, an engine being mounted on said frame above said shaving drum to power said shaving drum, and said height adjustment means for said rearward wheels including an axle connected to a pair of arms pivotally connected to said frame rearwardly of said rearward wheels and a telescoping adjustment unit is connected between said axle and said frame for pivoting said arms thereby selectively varying the height of said shaving drum above a support and work surface, said adjustment unit being manually adjustable and including a threaded shaft received in a threaded sleeve and said threaded shaft being manually rotatable.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |