Patent US3087520A successfully refreshed from Google Patents.
US3087520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable rabbeting and recessing tool
Assignee: Individual
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Filing: 1961-09-05
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Granted: 1963-04-30
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Fielder Arthur Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:19
CPC Classifications
B; B27; B27F; B27F5/00; B27F5/02; B27F5/12; Y; Y10; Y10T; Y10T408/00; Y10T408/31; Y10T408/33; Y10T408/55; Y10T408/566
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A PORTABLE RECESSING AND RABBETING TOOL, THE COMBINATION OF A BASE HAVING OPPOSITELY DISPOSED GUIDE KNOBS THEREON, A CENTRAL BOSS IN SAID BASE, MEANS DEFINING AN APERTURE IN SAID BOSS, SAID BOSS HAVING A TOP AND A BOTTOM, MEANS DEFINING A RECESS IN SAID BOTTOM OF SAID BOSS, A BUSHING ROTATABLY SUPPORTED IN SAID APERTURE OF SAID BOSS AND AN INTEGRAL FLANGE SEATING IN SAID RECESS, A SLEEVE TELESCOPINGLY RECEIVED OVER SAID PORTION OF SAID BUSHING EXTENDING ABOVE SAID TOP OF SAID BOSS, MEANS DEFINING AN APERTURE THROUGH SAID BUSHING, A DRILL BIT RECEIVED BY SAID APERTURE IN SAID BUSHING, MEANS CARRIED BY SAID BASE FOR SUPPORTING A PORTABLE ELECTRIC DRILL, SAID DRILL BEING OPERATIVELY CONNECTED TO SAID DRILL BIT FOR ROTATION OF SAID DRILL BIT, MEANS REMOVABLY CONNECTING SAID SLEEVE TO SAID BUSHING AND MEANS REMOVABLY CONNECTING SAID SLEEVE TO SAID DRILL BIT FOR ROTATION OF SAID SLEEVE AND BUSHING WITH SAID DRILL BIT.
Claim 2
Dependent Claim
156 words
IN A PORTABLE RECESSING AND RABBETING TOOL, THE COMBINATION OF A BASE HAVING OPPOSITELY DISPOSED GUIDE KNOBS THEREON, A CENTRAL BOSS IN SAID BASE, MEANS DEFINING AN APERTURE IN SAID BOSS, SAID BOSS HAVING A TOP AND A BOTTOM, MEANS DEFINING A RECESS IN SAID BOTTOM OF SAID BOSS, A BUSHING ROTATABLY SUPPORTED IN SAID APERTURE OF SAID BOSS AND AN INTEGRAL FLANGE SEATING IN SAID RECESS, A SLEEVE TELESCOPINGLY RECEIVED OVER SAID PORTION OF SAID BUSHING EXTENDING ABOVE SAID TOP OF SAID BOSS, MEANS DEFINING AN APERTURE THROUGH SAID BUSHING, A DRILL BIT RECEIVED BY SAID APERTURE IN SAID BUSHING, MEANS CARRIED BY SAID BASE FOR SUPPORTING A PORTABLE ELECTRIC DRILL, SAID DRILL BEING OPERATIVELY CONNECTED TO SAID DRILL BIT FOR ROTATION OF SAID DRILL BIT, MEANS REMOVABLY CONNECTING SAID SLEEVE TO SAID BUSHING AND MEANS REMOVABLY CONNECTING SAID SLEEVE TO SAID DRILL BIT FOR ROTATION OF SAID SLEEVE AND BUSHING WITH SAID DRILL BIT.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |