Patent US4012162A successfully refreshed from Google Patents.
US4012162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All purpose magnetic base drill
Assignee: Individual
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Filing: 1975-02-10
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Granted: 1977-03-15
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Expires: 1995-02-10
Abstract
Abstract An all-purpose drilling unit is provided which has a cylindrical base of magnetizable material containing a recess for a coil and an aperture for a cylindrical column which is supported in upright position thereby. A motor bracket is mounted on the column over a rack which is supported on one side thereof on which the bracket is moved upwardly and downwardly relative to the column. A transverse shaft is provided on the motor bracket having a pinion, the teeth of which are in mesh with those of the rack. A hub on one end of the shaft contains a plurality of rods and operating handles by which the motor and bracket is moved upwardly and downwardly on the column. A portable drill is supported on the motor bracket and is offset to permit the bracket to move downwardly beyond the top of the supporting base. A cylindrical sleeve is mounted above the cylindrical base forming a compartment containing a power pack, a receptacle, a switch, a plug, a light, a diode and interconnecting elements above the base. A disk-like cover encloses the top of the sleeve and supports the switch, light and receptacle.
Inventors
- 👤 Wesley S. Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:33
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0057; B25H1/0064; B25H1/0071; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/554; Y10T408/561
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
218 words
In a portable drill press, a circular base having a central aperture, a column in said aperture extending upwardly from said base, means for securing the bottom of said column within said aperture, a sleeve substantially the diameter of said base secured thereabove in alignment therewith forming an area for elements to be carried therein, a motor bracket having a vertical central portion disposed along the side of said base and sleeve, an upper and lower portion at the top and bottom of the motor bracket extending therefrom in opposite direction and in unit relation therewith, said upper portion having aperture means which receives said column above said sleeve, a pinion carried by said upper portion, a rack having teeth on one side and a form on the opposite side which mates with a form on the column, said teeth engaged with the teeth of the pinion, a support on the lower portion of said motor bracket for supporting a drill unit, an annular recess extends within said base outwardly of said central aperture, a magnetic coil mounted in said recess to extend about the bottom of said column, and a washer-like disc the size of said sleeve for covering the top thereof with the column extending therethrough to form a support for elements mounted within the sleeve.
Claim 2
Dependent Claim
218 words
In a portable drill press, a circular base having a central aperture, a column in said aperture extending upwardly from said base, means for securing the bottom of said column within said aperture, a sleeve substantially the diameter of said base secured thereabove in alignment therewith forming an area for elements to be carried therein, a motor bracket having a vertical central portion disposed along the side of said base and sleeve, an upper and lower portion at the top and bottom of the motor bracket extending therefrom in opposite direction and in unit relation therewith, said upper portion having aperture means which receives said column above said sleeve, a pinion carried by said upper portion, a rack having teeth on one side and a form on the opposite side which mates with a form on the column, said teeth engaged with the teeth of the pinion, a support on the lower portion of said motor bracket for supporting a drill unit, an annular recess extends within said base outwardly of said central aperture, a magnetic coil mounted in said recess to extend about the bottom of said column, and a washer-like disc the size of said sleeve for covering the top thereof with the column extending therethrough to form a support for elements mounted within the sleeve.
Claim 3
Dependent Claim
236 words
In a portable drill press, a circular base having a central aperture, a column in said aperture extending upwardly from said base, means for securing the bottom of said column within said aperture, a sleeve substantially the diameter of said base secured thereabove in alignment therewith forming an area for elements to be carried therein, a motor bracket having a vertical central portion disposed along the side of said base and sleeve, an upper and lower portion at the top and bottom of the motor bracket extending therefrom in opposite direction and in unit relation therewith, said upper portion having aperture means which receives said column above said sleeve, a pinion carried by said upper portion, a rack having teeth on one side and a form on the opposite side which mates with a form on the column, said teeth engaged with the teeth of the pinion, a support on the lower portion of said bracket for supporting a drill unit, an annular recess extending within said base outwardly of said central aperture, a magnetic coil mounted in said recess to extend about the bottom of said column, the base being of the magnetic type for retaining the drill in place on magnetizable material, and a plate to which said magnetic base is securable, said plate having an extending end located beneath the drill in position to operate on a workpiece supported on said extending end.
Claim 4
Dependent Claim
236 words
In a portable drill press, a circular base having a central aperture, a column in said aperture extending upwardly from said base, means for securing the bottom of said column within said aperture, a sleeve substantially the diameter of said base secured thereabove in alignment therewith forming an area for elements to be carried therein, a motor bracket having a vertical central portion disposed along the side of said base and sleeve, an upper and lower portion at the top and bottom of the motor bracket extending therefrom in opposite direction and in unit relation therewith, said upper portion having aperture means which receives said column above said sleeve, a pinion carried by said upper portion, a rack having teeth on one side and a form on the opposite side which mates with a form on the column, said teeth engaged with the teeth of the pinion, a support on the lower portion of said bracket for supporting a drill unit, an annular recess extending within said base outwardly of said central aperture, a magnetic coil mounted in said recess to extend about the bottom of said column, the base being of the magnetic type for retaining the drill in place on magnetizable material, and a plate to which said magnetic base is securable, said plate having an extending end located beneath the drill in position to operate on a workpiece supported on said extending end.
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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |