US4324042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shingle stripper
Assignee: Individual
•
Filing: 1980-09-22
•
Granted: 1982-04-13
•
Expires: 2000-09-22
Abstract
Abstract Apparatus for moving under the tabs of a shingle and stripping the tabs evenly and cleanly from the underbody of the shingle along the line of joinder between the tabs and the underbody to provide a suitable subsurface over which a new roof can be laid. The apparatus involves a rectangular shaped blade that has an inclined ripping bar located upon its top surface along one side edge thereof. A tab guide is also positioned upon the top surface of the blade adjacent to its other side edge and includes a raised finger which is adapted to engage tabs passing over the blade and guide them through the apparatus. A hold down member is also mounted outboard of the blade adjacent to the ripping bar that is arranged to ride over the underbody section of the shingle to allow the stripping tool to separate the tabs without lifting the underbody of the shingle from the support sheeting to which it is nailed.
Inventors
- 👤 Stanley H. Lipka
- 👤 David J. Lipka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:41
CPC Classifications
E; E04; E04D; E04D15/00; E04D15/003; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53683
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
223 words
Apparatus for stripping the tabs from the underbody of a shingle that has been nailed to a subsurface including a blade having a top surface and a bottom surface that are cojoined to form a thin forward edge which is able to pass easily under the tabs of a shingle, a ripping bar mounted upon the top surface of the blade along one edge thereof, said ripping bar having a ramp section that slopes upwardly from the forward edge of the blade toward the rear edge thereof, a tab guide having a support flange secured to the top surface of the blade adjacent to the other side edge thereof and a raised finger canterlevered from the flange which extends over the top surface of the blade from the flange toward the ripping bar whereby the tab of a shingle passing over the top surface of the blade is caused to pass under the finger, and a hold down member secured to the blade and extending outwardly from said one side edge thereof adjacent to the ripping bar, said hold down member further having a working surface that extends downwardly below the bottom surface of the blade to ride over the underbody of the shingle as the ripping bar passes under the tabs whereby the tabs are separated from the underbody of the shingle.
Claim 2
Dependent Claim
223 words
Apparatus for stripping the tabs from the underbody of a shingle that has been nailed to a subsurface including a blade having a top surface and a bottom surface that are cojoined to form a thin forward edge which is able to pass easily under the tabs of a shingle, a ripping bar mounted upon the top surface of the blade along one edge thereof, said ripping bar having a ramp section that slopes upwardly from the forward edge of the blade toward the rear edge thereof, a tab guide having a support flange secured to the top surface of the blade adjacent to the other side edge thereof and a raised finger canterlevered from the flange which extends over the top surface of the blade from the flange toward the ripping bar whereby the tab of a shingle passing over the top surface of the blade is caused to pass under the finger, and a hold down member secured to the blade and extending outwardly from said one side edge thereof adjacent to the ripping bar, said hold down member further having a working surface that extends downwardly below the bottom surface of the blade to ride over the underbody of the shingle as the ripping bar passes under the tabs whereby the tabs are separated from the underbody of the shingle.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 that further includes an elongated handle attached to the rear edge of the blade.
Claim 4
Dependent Claim
25 words
The apparatus of claim 1 wherein said hold down member is a roller that is rotatably supported from the blade by means of a shaft.
Claim 5
Dependent Claim
46 words
The apparatus of claim 1 wherein said tab guide further includes an adjusting means operatively associated with the support flange for permitting laterally repositioning of said tab guide upon the top surface of the blade whereby tabs of varying widths can be passed over the blade.
Claim 6
Dependent Claim
12 words
The apparatus of claim 1 wherein said blade is generally rectangular shaped.
Claim 7
Dependent Claim
42 words
The apparatus of claim 1 wherein the plane described by the bottom surface of the hold down member and the knife edge of the blade forms an angle of between 15° and 20° with the said one side edge of the blade.
Claim 8
Dependent Claim
24 words
The apparatus of claim 1 wherein the ripping bar extends outwardly beyond the forward edge of the blade and terminates in a chisel edge.
Claim 9
Dependent Claim
37 words
The apparatus of claim 1 wherein the finger of the tab guide and the working surface of the hold down member are both located at about the same distance back from the forward edge of the blade.
References Cited (Backward Citations)
US752615A
Cited
US1218145A
Cited
US1841135A
Cited
US2714907A
Cited
US4009743A
Cited
US4203210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |