US4660450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable guide for power saw
Assignee: Interfused Design & Development
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Filing: 1985-10-15
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Granted: 1987-04-28
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Expires: 2005-10-15
Abstract
Abstract A portable, frameless, self-supporting guide for circular power saws comprises an elongated base plate affixed to a single L-shaped bar on one side and to a strip on the other side thereof. A pair of parallel cross rails is fixedly disposed above the base plate for slidable movement of a power saw thereby producing true right angle cuts or mited cuts in a workpiece in a safe and efficient manner.
Inventors
- 👤 Philip Rafalow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:55
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q9/0064; B23Q9/0078; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7593; Y10T83/7607; Y10T83/7627; Y10T83/768; Y10T83/7684; Y10T83/7693; Y10T83/869; Y10T83/8763; Y10T83/8878; Y10T83/8886
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
158 words
A portable, self-sustaining, rigid guide for use with a circular power saw comprising, in combination: (a) an elongated, flat, rectangular base plate having two sections separated by a transverse spacing therebetween; (b) a single L-shaped bar disposed along rear side of said base plate, said bar having an upwardly extending vertical flange and an inwardly extending horizontal flange secured to said base plate; (c) a U-shaped recess in midportion of said vertical flange; (d) a flat, elongated strip secured to front side of said base plate underneath thereof; (e) a pair of spaced apart L-shaped brackets secured under said base plate to the front side thereof; and (f) a pair of horizontally disposed, spaced apart, opposing, parallel L-shaped cross rails affixed to said L-shaped brackets and to said vertical flange, said cross rails being positioned above said base plate adjacent said recess for reciprocal slidable movement of a power saw thereon and extending outwardly beyond the width thereof.
Claim 2
Dependent Claim
158 words
A portable, self-sustaining, rigid guide for use with a circular power saw comprising, in combination: (a) an elongated, flat, rectangular base plate having two sections separated by a transverse spacing therebetween; (b) a single L-shaped bar disposed along rear side of said base plate, said bar having an upwardly extending vertical flange and an inwardly extending horizontal flange secured to said base plate; (c) a U-shaped recess in midportion of said vertical flange; (d) a flat, elongated strip secured to front side of said base plate underneath thereof; (e) a pair of spaced apart L-shaped brackets secured under said base plate to the front side thereof; and (f) a pair of horizontally disposed, spaced apart, opposing, parallel L-shaped cross rails affixed to said L-shaped brackets and to said vertical flange, said cross rails being positioned above said base plate adjacent said recess for reciprocal slidable movement of a power saw thereon and extending outwardly beyond the width thereof.
Claim 3
Dependent Claim
31 words
The guide of claim 1 wherein said base plate is secured to upper surface of said strip and to upper surface of said horizontal flange by a plurality of fastening means.
Claim 4
Dependent Claim
22 words
The guide of claim 2 wherein exposed portion of said fastening means under said base plate is covered by a protective pad.
Claim 5
Dependent Claim
40 words
The guide of claim 1 wherein said cross rails are disposed at a substantially right angle to longitudinal direction of said base plate and spaced from each other a distance approximately equal to said transverse spacing between said two sections.
Claim 6
Dependent Claim
30 words
The guide of claim 1 wherein a single stop member is slidably mounted on said vertical flange for adjustment of multiple cuts of a workpiece to a predetermined equal length.
Claim 7
Dependent Claim
20 words
The guide of claim 1 wherein each of said L-shaped brackets comprises at least one pair of vertically aligned holes.
Claim 8
Dependent Claim
24 words
The guide of claim 1 wherein each of said L-shaped brackets comprises three pairs of holes aligned vertically in a substantially equally spaced relation.
Claim 9
Dependent Claim
43 words
The guide of claim 6 wherein said vertical flange of said L-shaped bar is provided with at least one pair of vertically aligned holes located adjacent said U-shaped recess on each side thereof and horizontally aligned with the holes in said L-shaped brackets.
Claim 10
Dependent Claim
29 words
The guide of claim 7 wherein said vertical flange of said L-shaped bar is provided with three pairs of vertically aligned holes arranged in a substantially equally spaced relation.
Claim 11
Dependent Claim
25 words
The guide of claim 9 wherein the holes in said L-shaped brackets and the holes in said vertical flange are mutually aligned in cooperating relationship.
Claim 12
Dependent Claim
82 words
The guide of claim 1 wherein one of said cross rails is affixed to a pair of spaced, inverted L-shaped mounting brackets adapted for securing to said L-shaped brackets secured to the front side of said base plate and to the vertical flange of said L-shaped bar, the other cross rail being affixed to a pair of adjustable brackets comprising a pair of vertically aligned transverse slits cooperating with the holes in said L-shaped brackets and the holes in said vertical flange.
Claim 13
Dependent Claim
30 words
The guide of claim 1 wherein said transverse spacing between the two sections of said base plate provides a wide, free passageway for a blade of a circular power saw.
Claim 14
Dependent Claim
24 words
The guide of claim 1 wherein the space between said cross rails is adjustable to accomodate circular saws mounted on feet of varying widths.
Claim 15
Dependent Claim
37 words
The guide of claim 1 wherein said cross rails are positioned so as to permit the bottom edge of a circular saw placed thereon to extend about 1/8 inch below the top surface of said base plate.
Claim 16
Dependent Claim
42 words
The guide of claim 1 wherein a pair of flat spacers is inserted between the underside of said base plate and the top surface of said horizontal flange of said L-shaped bar to hold said base plate in a substantially horizontal position.
Claim 17
Dependent Claim
31 words
The guide of claim 1 wherein a pair of spaced apart pivotable outriggers are attached to the bottom of said strip on each side of the spacing in said base plate.
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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) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |