Patent US3645307A successfully refreshed from Google Patents.
US3645307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power saw guide
Assignee: Protrack Industries Ltd
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Filing: 1970-06-10
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Granted: 1972-02-29
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Expires: 1990-06-10
Abstract
Abstract A power saw guide including a base frame adapted to be secured to a worktable, the frame having a guide rail adapted for adjustment about a vertical axis. A saw carriage is roller supported on the rail for longitudinal movement, a guide roller on the carriage being adjustable to permit the carriage to be levelled relative to the worktable.
Inventors
- 👤 Henry C Stocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:38
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q9/0064; B23Q9/0078; B23Q9/0085; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7684; Y10T83/7693; Y10T83/7697
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
214 words
A saw guide for a portable powered hand saw, the guide including: a. a base frame adapted to be clamped at an edge of a worktable, the frame having an upper member spaced above the table, b. a guide rail assembly having front and rear guide faces and an upper support edge, c. means for mounting the guide rail assembly on the upper member of the base frame spaced above the worktable for adjustment about a vertical axis, d. a saw carriage having a central longitudinal axis and a central transverse axis adapted to be mounted on the guide rail for longitudinal movement along the rail, the carriage having: e. a pair of upper support rollers spaced equidistantly apart on opposite sides of the carriage transverse axis for rollably engaging the upper support edge of the guide rail, f. a pair of lower guide rollers spaced equidistantly apart on opposite sides of the transverse axis for engaging the rear guide face of the guide rail adjacent a lower edge thereof and, g. an upper guide roller rotatable about a vertical axis posItioned midway between the upper rollers for engaging the front guide face of the guide rail adjacent an upper edge thereof so that the carriage makes only rolling contact with the guide rail,
Claim 2
Dependent Claim
214 words
A saw guide for a portable powered hand saw, the guide including: a. a base frame adapted to be clamped at an edge of a worktable, the frame having an upper member spaced above the table, b. a guide rail assembly having front and rear guide faces and an upper support edge, c. means for mounting the guide rail assembly on the upper member of the base frame spaced above the worktable for adjustment about a vertical axis, d. a saw carriage having a central longitudinal axis and a central transverse axis adapted to be mounted on the guide rail for longitudinal movement along the rail, the carriage having: e. a pair of upper support rollers spaced equidistantly apart on opposite sides of the carriage transverse axis for rollably engaging the upper support edge of the guide rail, f. a pair of lower guide rollers spaced equidistantly apart on opposite sides of the transverse axis for engaging the rear guide face of the guide rail adjacent a lower edge thereof and, g. an upper guide roller rotatable about a vertical axis posItioned midway between the upper rollers for engaging the front guide face of the guide rail adjacent an upper edge thereof so that the carriage makes only rolling contact with the guide rail,
Claim 3
Dependent Claim
22 words
A saw guide as claimed in claim 1 including: h. means mounting the upper guide roller for adjustment along the transverse axis.
Claim 4
Dependent Claim
126 words
A saw guide as claimed in claim 2 in which the means (h) includes: i. a supporting block extending from the carriage outwards of and above the guide rail, the block having a vertical slot parallel to the transverse axis of the carriage, ii. a bolt extending vertical through the slot, the bolt having the adjustable roller mounted at a lower end, iii. a shoulder on the bolt, the shoulder being engageable with an under side of the block, iv. a wing nut engaged with an upper end of the bolt adapted to be tightened against an upper side of the block and, v. an adjusting screw extending through the block in a line with the slot, the screw having an inner end engaging the bolt.
Claim 5
Dependent Claim
90 words
A saw guide as claimed in claim 1 including: i. a vertical end wall of the carriage having an outer face normal to the longitudinal axis of the carriage, ii. A pair of hook member at an upper edge of the vertical end wall spaced apart equidistantly on opposite sides of the longitudinal axis, the hook members being adapted to slidably grip the guide rail and means carried by the hook members operable into engagement with the guide rail to secure the carriage against movement longitudinally of the guide rail.
Claim 6
Dependent Claim
64 words
A saw guide as claimed in claim 1 in which the base frame includes: j. a lower angle adapted to be clamped to an edge of the worktable, k. an upper angle having a hinged connection with the lower angle member, and l. means for releasably connecting the upper angle to the lower angle so as to prevent hinged movement of the upper angle.
Claim 7
Dependent Claim
73 words
A saw guide as claimed in claim 1 in which the means (c) includes: m. a vertical axis bolt on which the guide rail assembly is mounted for pivotal movement and a threaded socket member on the upper base frame member for threadedly receiving a threaded lower end of the pivot bolt, the bolt having a head adapted to be tightened against the guide rail assembly for securing the latter against pivotal movement.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |