US4880491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guided roofing materials removal apparatus
Assignee: Individual
•
Filing: 1988-08-01
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Granted: 1989-11-14
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Expires: 2008-08-01
Abstract
Abstract A roofing materials removal device provides a guide system which secures the device and the operator in position on an inclined roof so that the roof can be traversed at various positions along different travel paths while supported. The removal device comprises a light-weight, durable, wheel supported frame, dual handles for leverage, an electric motor positioned low on the frame to give the device balance and stability. An angled blade reciprocating and riding on linear bearings is connected to spring-mounted tension bars. As the springs force the rear end of the tension bar upward, the forward end of the tension bars pivot downward causing the serrated, leading edge of the blade to slide between the roof covering material and the roof deck. The blade follows the contour of the roof deck dislodging roofing material including nails, roofing felt and shingles. The guide system is positioned on the opposite side of the roof ridge from the removal device. The guide system comprises a track, a vertical support post assembly, a carrier which traverses the length of the track, and an adjustable support system which secures the machine frame and the operator to a desired position. An on-off ramp allows the roofing materials device to be moved to the desired position through the use of the guide system.
Inventors
- 👤 James L. Jacobs
- 👤 Larry D. Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:59
CPC Classifications
B; B66; B66B; B66B9/00; B66B9/16; E; E04; E04D; E04D15/00; E04D15/003; E04G; E04G23/00; E04G23/02; E04G23/0281; Y; Y10; Y10S; Y10S156/00; Y10S156/918; Y10S156/919; Y10S156/927; Y10S156/934; Y10S156/935; Y10S156/94; Y10T; Y10T156/00; Y10T156/11; Y10T156/1168; Y10T156/12; Y10T156/1348; Y10T156/19; Y10T156/1961; Y10T156/1967; Y10T156/1972
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
158 words
A roofing material scraper apparatus and guide system, comprising: (a) track means for defining a path along a roof ridge line and generally parallel thereto and adapted to be attached at the ridge line of the roof; (b) a wheeled machine frame that can traverse the roof along travel path lines generally parallel to and spaced from the track means; (c) stripping means carried by the frame for removing roofing materials such as shingles, felt and/or nails as the frame traverses the roof along the travel path lines; (d) a movable carriage positioned for travel upon the track; (e) adjustable support means forming a connection between the carriage and the wheeled machine frame for defining an adjustable support that can vary the distance between the carriage and the wheeled machine frame during movement of the machine frame so that an operator can remove roofing material from the roof while securing the machine frame and operator on the roof.
Claim 2
Dependent Claim
158 words
A roofing material scraper apparatus and guide system, comprising: (a) track means for defining a path along a roof ridge line and generally parallel thereto and adapted to be attached at the ridge line of the roof; (b) a wheeled machine frame that can traverse the roof along travel path lines generally parallel to and spaced from the track means; (c) stripping means carried by the frame for removing roofing materials such as shingles, felt and/or nails as the frame traverses the roof along the travel path lines; (d) a movable carriage positioned for travel upon the track; (e) adjustable support means forming a connection between the carriage and the wheeled machine frame for defining an adjustable support that can vary the distance between the carriage and the wheeled machine frame during movement of the machine frame so that an operator can remove roofing material from the roof while securing the machine frame and operator on the roof.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1, wherein the track means and machine frame are positioned on opposite sides of the roof ridge line during operation.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1, wherein the adjustable support means comprises winch and cable.
Claim 5
Dependent Claim
27 words
The apparatus of claim 2, wherein the movable carriage includes an arm which travels adjacent to the roof ridge and extends above the ridge line and track.
Claim 6
Independent Claim
29 words
The apparatus of claims 1 and 4, wherein the arm includes guide means for aligning cables forming connections between the movable carriage, the wheeled machine frame and the operator.
Claim 7
Dependent Claim
33 words
The apparatus of claim 1, further comprising ramp means connectable to the machine frame which in combination with the adjustable support means can transport the wheeled machine frame onto or off the roof.
Claim 8
Dependent Claim
120 words
A roofing materials removal device for use by a human operator for removing roof material such as shingles and nails from an underlying roof decking comprising: (a) a wheeled frame; (b) an angled stripping blade for removing roofing materials including shingles and/or nails, and mounted on at least two reciprocating drive arms located at opposite sides of the blade; (c) linear bearing means supporting the blade for translating reciprocating movement of the blade into generally fore and aft movement defining a generally horizontal stripping plane; (d) spring means for adjustably supporting the stripping blade so that the stripping blade can follow the contour of the roof decking; (e) power means for propelling the frame removal device along a travel path.
Claim 9
Dependent Claim
120 words
A roofing materials removal device for use by a human operator for removing roof material such as shingles and nails from an underlying roof decking comprising: (a) a wheeled frame; (b) an angled stripping blade for removing roofing materials including shingles and/or nails, and mounted on at least two reciprocating drive arms located at opposite sides of the blade; (c) linear bearing means supporting the blade for translating reciprocating movement of the blade into generally fore and aft movement defining a generally horizontal stripping plane; (d) spring means for adjustably supporting the stripping blade so that the stripping blade can follow the contour of the roof decking; (e) power means for propelling the frame removal device along a travel path.
Claim 10
Dependent Claim
28 words
The apparatus of claim 7, wherein the weight of the device is borne principally by the wheels and at least part of the frame, not the stripping blade.
Claim 11
Dependent Claim
25 words
The apparatus of claim 7, wherein the power means is an electric motor that both propels the frame forward and reverse and reciprocates the blades.
Claim 12
Dependent Claim
17 words
The apparatus of claim 7, further comprising an elongated track and the wheels registering with the track.
Claim 13
Dependent Claim
14 words
The apparatus of claim 7, wherein the power means is a reversible electric motor.
Claim 14
Dependent Claim
17 words
The apparatus of claim 11, further comprising means for selectively moving the wheeled frame forwardly or rearwardly.
Claim 15
Dependent Claim
14 words
The apparatus of claim 12, wherein the selective moving means includes a reversing drum.
Claim 16
Dependent Claim
20 words
The apparatus of claim 7, wherein the power means includes multiple sheaves with at least one having double drive belts.
Claim 17
Dependent Claim
19 words
The apparatus of claim 7, further comprising multiple sheaves driven by belt assemblies for powering the reciprocating drive arms.
Claim 18
Dependent Claim
21 words
The apparatus of claim 7 wherein the reciprocating drive arms are powered at least in part by an endless drive chain.
Claim 19
Dependent Claim
27 words
The apparatus of claim 7, further comprising dolly wheel means for elevating the wheeled frame during transport such as when the apparatus is not removing roofing materials.
Claim 20
Dependent Claim
23 words
The apparatus of claim 7, further comprising safety means for deactivating the power means when the apparatus is inadvertently released by an operator.
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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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |