Patent US3871103A successfully refreshed from Google Patents.
US3871103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power saw precision stain gauge
Assignee: Individual
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Filing: 1973-07-09
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Granted: 1975-03-18
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Expires: 1993-07-09
Abstract
Abstract A gauge for measuring stair treads and risers is provided comprising a telescopic framework, a pair of stationary members attached to opposite ends of the framework, and a movable member pivotally mounted to each stationary member and adapted to contact a stair skirt upon appropriate adjustment of the telescopic framework length, whereby the end dimensions of the stair tread or riser are determined. Each movable member may be swung upwardly and out of the way when making a cut with a portable power saw; the width of each movable member being equal to the dimension between the saw slide shoe edge and saw blade, with the shoe being guided by the edge of the stationary member to provide an accurate cut.
Inventors
- 👤 Harold W Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:28
CPC Classifications
B; B27; B27B; B27B9/00; B27B9/04; E; E04; E04F; E04F21/00; E04F21/26; Y; Y10; Y10T; Y10T83/00; Y10T83/667; Y10T83/68
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
325 words
A stair tread and riser gauge for use with a portable power saw of the type having a slide shoe with a guide edge spaced from and paralleling a cutting edge, said gauge including an elongated framework having opposite end portions and means for adjustably varying the effective length of said framework between said opposite end portions, a pair of generally co-planar plate-like sizing assemblies mounted on opposite end portions of said framework, at least one of said assemblies including a first base plate portion including an outer edge portion generally transverse to the longitudinal extent of said framework, said base plate portion being pivotally supported from the corresponding framework end portion for adjustable angular positioning relative to said corresponding framework end portion about an axis extending transverse to the longitudinal extent of said framework and disposed substantially normal to said sizing assemblies, said sizing assemblies including remote gauge edge portions disposed transverse to said axis and the longitudinal extent of said framework, a shiftable plate portion including opposite edge portions generally paralleling each other, one of said opposite edge portions of said shiftable plate portion being hingedly supported from said outer edge portion for angular displacement of said shiftable plate portion relative to said base plate portion about an axis generally paralleling said outer edge portion between an inactive position overlying said base plate portion and retracted above said outer edge portion and an active position with said shiftable plate forming an outward generally co-planar extension of said first base plate portion, the gauge edge portion of said one assembly being supported from said shiftable plate portion on the side thereof opposite from said one opposite edge portion, said gauge edge portion and said outer edge portion of said one assembly, when said one assembly is in its active position, being spaced apart a distance corresponding to the spacing between the guide edge of the slide shoe and the cutting edge of the saw.
Claim 2
Dependent Claim
325 words
A stair tread and riser gauge for use with a portable power saw of the type having a slide shoe with a guide edge spaced from and paralleling a cutting edge, said gauge including an elongated framework having opposite end portions and means for adjustably varying the effective length of said framework between said opposite end portions, a pair of generally co-planar plate-like sizing assemblies mounted on opposite end portions of said framework, at least one of said assemblies including a first base plate portion including an outer edge portion generally transverse to the longitudinal extent of said framework, said base plate portion being pivotally supported from the corresponding framework end portion for adjustable angular positioning relative to said corresponding framework end portion about an axis extending transverse to the longitudinal extent of said framework and disposed substantially normal to said sizing assemblies, said sizing assemblies including remote gauge edge portions disposed transverse to said axis and the longitudinal extent of said framework, a shiftable plate portion including opposite edge portions generally paralleling each other, one of said opposite edge portions of said shiftable plate portion being hingedly supported from said outer edge portion for angular displacement of said shiftable plate portion relative to said base plate portion about an axis generally paralleling said outer edge portion between an inactive position overlying said base plate portion and retracted above said outer edge portion and an active position with said shiftable plate forming an outward generally co-planar extension of said first base plate portion, the gauge edge portion of said one assembly being supported from said shiftable plate portion on the side thereof opposite from said one opposite edge portion, said gauge edge portion and said outer edge portion of said one assembly, when said one assembly is in its active position, being spaced apart a distance corresponding to the spacing between the guide edge of the slide shoe and the cutting edge of the saw.
Claim 3
Dependent Claim
38 words
The combination of claim 1 wherein the other of said assemblies also includes a base plate portion and a shiftable plate portion pivotally supported therefrom corresponding to the base plate and shiftable plate portions of said one assembly.
Claim 4
Dependent Claim
50 words
The combination of claim 2 wherein the base plate portion of said other assembly is also pivotally supported from the corresponding framework end portion for adjustable angular positioning relative to said framework about an axis transverse to the longitudinal extent of said framework and generally normal to said sizing assemblies.
Claim 5
Dependent Claim
63 words
The combination of claim 1 wherein said gauge edge portion of said one sizing assembly comprises one straight edge portion of a plate member shiftably supported from said shiftable plate portion for adjusted extension and retraction relative to said second opposite edge portion and at least slightly angularly adjustable relative to said second opposite edge portion in the plane of said plate member.
Claim 6
Dependent Claim
19 words
The combination of claim 1 wherein said opposite end portions of said framework include adjacent adjustably overlapped end portions.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |