US4239428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Router adjustment attachment
Assignee: Individual
•
Filing: 1979-05-24
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Granted: 1980-12-16
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Expires: 1999-05-24
Abstract
Abstract A router assembly including a router sub-assembly vertically adjustable relative to a supportive base plate through the utilization of a sub-assembly supported rack gear and a pinion gear meshed with the rack gear and journaled from the base. The base includes a handle portion for horizontal directional control of the router assembly during routing operations and oscillatably supported from the base. Connecting structure operatively connects the handle portion and the pinion gear for oscillation of the latter in response to oscillation of the former, whereby adjustable oscillation of the handle will be effective to vertically adjust the router sub-assembly relative to the base plate.
Inventors
- 👤 James A. Berzina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:55
CPC Classifications
B; B27; B27C; B27C5/00; B27C5/10; B23; B23C; B23C2255/00; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/564; Y10T408/65; Y10T408/675; Y10T408/6779; Y10T409/00; Y10T409/30; Y10T409/306216; Y10T409/306552; Y10T409/306608; Y10T409/306664; Y10T409/306776
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
In combination with a router assembly including a router sub-assembly vertically adjustable relative to a supportive base plate through the utilization of a sub-assembly supported rack gear and a pinion gear meshed with the rack gear and journaled from the base, said base including a handle portion for directional control of said router assembly during routing operations, means oscillatably supporting said handle portion from said base, connecting means operatively connecting said handle portion and pinion gear for oscillation of the latter in response to oscillation of the former, said connecting means including first and second lever arms operatively connected to said pinion gear and handle portion, respectively, for angular displacement therewith, and an elongated connecting link having its opposite ends pivotally connected to said lever arms.
Claim 2
Dependent Claim
126 words
In combination with a router assembly including a router sub-assembly vertically adjustable relative to a supportive base plate through the utilization of a sub-assembly supported rack gear and a pinion gear meshed with the rack gear and journaled from the base, said base including a handle portion for directional control of said router assembly during routing operations, means oscillatably supporting said handle portion from said base, connecting means operatively connecting said handle portion and pinion gear for oscillation of the latter in response to oscillation of the former, said connecting means including first and second lever arms operatively connected to said pinion gear and handle portion, respectively, for angular displacement therewith, and an elongated connecting link having its opposite ends pivotally connected to said lever arms.
Claim 3
Dependent Claim
27 words
The combination of claim 1 wherein the axis of rotation of the pinion gear and the axis of oscillation of said handle portion substantially parallel each other.
Claim 4
Dependent Claim
24 words
The combination of claim 1 wherein said elongated connecting link comprises a rod-type member having angulated opposite ends pivotally supported from said lever arms.
Claim 5
Dependent Claim
43 words
The combination of claim 1 wherein said connecting link comprises an elongated metal strip member whose opposite ends have transverse bore formed therethrough and are pivotally anchored relative to the corresponding lever arms by fasteners secured through said bores and said lever arms.
Claim 6
Dependent Claim
20 words
The combination of claim 4 wherein said second lever extends generally radially outwardly between axially spaced portions of said grip.
Claim 7
Dependent Claim
22 words
The combination of claim 4 wherein said second lever is keyed to one end face of said handle portion for oscillation therewith.
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) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |