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US4125944A
Expired / Lapsed
US
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Level for power hand drill
Assignee: Individual
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Filing: 1976-08-10
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Granted: 1978-11-21
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Expires: 1996-08-10
Abstract
Abstract A small, pocket level that can be readily and easily attached to any portable power tool so that the tool is operated on an accurately horizontal and vertical axis; the level including a transparent glass containing a fluid and an air bubble space, the glass being of cross-shape, bowed slightly upwardly at its center so to obtain a level position along two directional axes at right angle to each other; the level being attachable to the tool by a permanent magnet base.
Inventors
- 👤 Philip Esposito
- 👤 George Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:38
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0078; B25H1/0085; G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
In a pocket level, the combination of a main body, a depression upon an upper side, a transparent, hollow glass in said depression, a liquid and an air bubble sealed inside said glass, said depression and said glass each being of cross-shape having arms at right angle, said arms of said glass being slightly curved so that a center of said crossing arms is highest, and a permanent magnet secured to an underside of said main body wherein said main body and magnet have three, threaded openings therethrough vertically a screw in each said opening, and a magnet secured on the lower end of each said screw.
Claim 2
Dependent Claim
107 words
In a pocket level, the combination of a main body, a depression upon an upper side, a transparent, hollow glass in said depression, a liquid and an air bubble sealed inside said glass, said depression and said glass each being of cross-shape having arms at right angle, said arms of said glass being slightly curved so that a center of said crossing arms is highest, and a permanent magnet secured to an underside of said main body wherein said main body and magnet have three, threaded openings therethrough vertically a screw in each said opening, and a magnet secured on the lower end of each said screw.
Claim 3
Dependent Claim
45 words
The combination of claim 1, in further combination with a short screwdriver having a theaded shank portion between a knurlled head adapted for manual actuation and an opposite end screw slot engaging blade, said screwdriver being engaged in a threaded opening in said main body.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |