US3783915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Router overarm attachment
Assignee: Individual
•
Filing: 1972-05-30
•
Granted: 1974-01-08
•
Expires: 1992-05-30
Abstract
Abstract A device which will contain an electric router in a detachable manner and provide for a controlled vertical movement of the router relative to a work surface. The device is detachably mounted to a round pipe column or spindle. Affixed in this manner, the tool is used for cutting wood, and other materials.
Inventors
- 👤 N Bryden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:55
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/04; B25H; B25H1/00; B25H1/0021; B25H1/0042; Y; Y10; Y10T; Y10T408/00; Y10T408/91; Y10T408/94; Y10T408/95
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
An overarm attachment for mounting a portable tool to a fixed support spindle and above a horizontally disposed work surface comprising a support arm, means carried at one end of said arm for releasably securing said arm to the spindle and supporting said arm in generally spaced parallel relation above the work surface, an element carried by said arm for releasably mounting the tool, means connecting said element and said arm one to the other at the opposite end of said arm and providing for movement of said element relative to said arm toward and away from the work surface, and means for locking said element to said arm to prevent movement of said element relative to said arm and to locate said element in a selected elevation above the work surface.
Claim 2
Dependent Claim
132 words
An overarm attachment for mounting a portable tool to a fixed support spindle and above a horizontally disposed work surface comprising a support arm, means carried at one end of said arm for releasably securing said arm to the spindle and supporting said arm in generally spaced parallel relation above the work surface, an element carried by said arm for releasably mounting the tool, means connecting said element and said arm one to the other at the opposite end of said arm and providing for movement of said element relative to said arm toward and away from the work surface, and means for locking said element to said arm to prevent movement of said element relative to said arm and to locate said element in a selected elevation above the work surface.
Claim 3
Dependent Claim
33 words
An attachment according to claim 1 wherein said connecting means includes a guideway carried by said arm and a slide carried by said element slidably receivable in the guideway carried by said arm.
Claim 4
Dependent Claim
47 words
An attachment according to claim 2 wherein said moving means comprises a rack carried by said slide and a pinion rotatably carried by said arm and in meshing engagement with said rack, and means for rotating said pinion thereby to move said element relative to said arm.
Claim 5
Dependent Claim
50 words
An arrangement according to claim 3 including an axle carried by said arm, a sleeve carrying said pinion and rotatably carried by said axle, said locking means including a pin threadedly engageable with said sleeve and engageable with said axle to lock said sleeve against rotation relative to said axle.
Claim 6
Dependent Claim
33 words
An attachment according to claim 1 including a depth gauge rod carried by said element and means carried by said element for releasably locking said rod in selected elevations above the work surface.
Claim 7
Dependent Claim
49 words
An attachment according to claim 1 wherein said element includes a generally C-shaped base disposed on its side and opening laterally in a direction away from said arm, and means carried by said base And extending across the lateral opening thereof for releasably clamping the tool to said base.
Claim 8
Dependent Claim
82 words
An attachment according to claim 4 including a depth gauge rod carried by said element and means carried by said element for releasably locking said rod in selected elevations above the work surface, said element including a generally C-shaped base disposed on its side and opening laterally in a direction away from said arm, and means carried by said base and extending across the lateral opening thereof for releasably clamping the tool to the base, said securing means including a split collar.
References Cited (Backward Citations)
US1696032A
Cited
US2404053A
Cited
US2821875A
Cited
US2896677A
Cited
US3242773A
Cited
US3550481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |