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US5974674A
Expired / Lapsed
US
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Undercut saw
Assignee: Individual
•
Filing: 1998-07-01
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Granted: 1999-11-02
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Expires: 2018-07-01
Abstract
Abstract A saw assembly for a floor installer to use in undercutting baseboards, doors, and the like includes an electric motor subassembly having an electric motor and a spindle rotatably powered by the electric motor, a circular blade mounted on the spindle, and a blade guard subassembly. The blade guard assembly includes a moveable component adapted for movement to a retracted position that exposes more than 180 degrees of the circumference of the circular blade in order to facilitate the undercutting of a ninety degree inside corner. One embodiment uses a conventional handheld 11,000 rpm high speed grinder motor assembly with a right angle drive to power a high speed 4-inch blade in place of a grinder wheel. Carrying the undercut saw with a grinder wheel, sanding wheel, and a tile cutting blade adds functionality.
Inventors
- 👤 Daniel E. Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:18
CPC Classifications
B; B27; B27G; B27G19/00; B27G19/02; B27G19/04; B27B; B27B5/00; B27B5/02; B27B5/08; B27B9/00; B27B9/02; B27F; B27F5/00; B27F5/02; B27F5/023
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
A saw assembly, comprising: an electric motor subassembly, the electric motor subassembly having an electric motor adapted to produce rotational movement about a first axis of rotation and a spindle rotatably powered by the electric motor for rotation about a second axis of rotation that is perpendicular to the first axis of rotation; a circular blade mounted on the spindle, the blade having teeth that extend to an outer circumference of the circular blade; and a blade guard subassembly mounted on the electric motor subassembly, the blade guard subassembly including a fixed component intersecting a plane formed by said first and second axes of rotation and a movable component that combine operatively to provide a protective cover over at least a portion of the circumference of the circular blade, and said movable component adapted for movement by a user to a retracted position of the movable component that exposes more than 180° of the outer circumference of the circular blade.
Claim 2
Dependent Claim
160 words
A saw assembly, comprising: an electric motor subassembly, the electric motor subassembly having an electric motor adapted to produce rotational movement about a first axis of rotation and a spindle rotatably powered by the electric motor for rotation about a second axis of rotation that is perpendicular to the first axis of rotation; a circular blade mounted on the spindle, the blade having teeth that extend to an outer circumference of the circular blade; and a blade guard subassembly mounted on the electric motor subassembly, the blade guard subassembly including a fixed component intersecting a plane formed by said first and second axes of rotation and a movable component that combine operatively to provide a protective cover over at least a portion of the circumference of the circular blade, and said movable component adapted for movement by a user to a retracted position of the movable component that exposes more than 180° of the outer circumference of the circular blade.
Claim 3
Dependent Claim
25 words
A saw assembly as recited in claim 1, wherein the electric motor is adapted to operate at rotational speeds greater than 7,000 revolutions per minute.
Claim 4
Dependent Claim
21 words
A saw assembly as recited in claim 1, wherein the outer diameter of the circular blade is less than five inches.
Claim 5
Dependent Claim
45 words
A saw assembly as recited in claim 1, wherein the moveable component of the blade guard subassembly is adapted for movement by a user to a retracted position of the moveable component that exposes at least 190 degrees of the circumference of the circular blade.
References Cited (Backward Citations)
US1806582A
Cited
US2610658A
Cited
US2741282A
Cited
US3111969A
Cited
US3177909A
Cited
US3613748A
Cited
US3805639A
Cited
US5012582A
Cited
US5531147A
Cited
US5542183A
Cited
US5637035A
Cited
US5784789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-01 | 2003-05-03 | 2003-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-01 | 2007-05-03 | 2007-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-01 | 2011-05-03 | 2011-11-02 | $7700.00 | Window Closed / Lapsed |