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US4656749A Expired / Lapsed US ⏱️ 0.0 years remaining

Hand drill level

Assignee: Individual
•
Filing: 1986-01-22
•
Granted: 1987-04-14
•
Expires: 2006-01-22
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Abstract

Abstract A hand drill level is provided and consists of a mounting frame removably mountable to top surface of a shank portion of a hand drill and a vial that has a bubble chamber operably affixed within the mounting frame and parallel to a longitudinal axis of a drill bit to aid in drilling holes straight through a work piece.

Inventors

  • 👤 Donnie L. Ashley
  • 👤 George Spector

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 04:14
CPC Classifications
B; B25; B25F; B25F5/00; B25F5/02; B25F5/021; B25F5/022

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 228 words
A hand drill level for a conventional hand drill having a handle portion and a shank portion adapted to secure a conventional drill bit, said hand drill level comprising: (a) a mounting frame removeably mountable to top surface of said shank portion of said hand drill; (b) a vial having a bubble chamber operably affixed within said mounting frame and parallel to longitudinal axis of said drill bit to aid in drilling holes straight through a work piece, wherein said mounting frame includes: (c) a receptacle of a per-determined configuration; (d) a plurality of pliable tabs extending outwardly from sides of said receptacle; (e) adhesive material placed on underside of said tabs so that said tabs can be bent to conform to contour of said top surface of said shank portion of said hand drill and be removeably mountable thereto, wherein said mounting frame further includes: (f) a leveling rod horizontally slideable through said receptacle, said rod having two transverse legs of equal length spaced apart at front end to extend downwardly to make contact with said drill but for stabilizing said receptacle; (g) said tabs being elongated to aid in measuring center of said drill bit; and (h) a pair of adjustment screws, each of said screws vertically thread through opposite ends of said receptacle to adjust said receptacle to said longitudinal axis of said drill bit.
Claim 2
Dependent Claim 228 words
A hand drill level for a conventional hand drill having a handle portion and a shank portion adapted to secure a conventional drill bit, said hand drill level comprising: (a) a mounting frame removeably mountable to top surface of said shank portion of said hand drill; (b) a vial having a bubble chamber operably affixed within said mounting frame and parallel to longitudinal axis of said drill bit to aid in drilling holes straight through a work piece, wherein said mounting frame includes: (c) a receptacle of a per-determined configuration; (d) a plurality of pliable tabs extending outwardly from sides of said receptacle; (e) adhesive material placed on underside of said tabs so that said tabs can be bent to conform to contour of said top surface of said shank portion of said hand drill and be removeably mountable thereto, wherein said mounting frame further includes: (f) a leveling rod horizontally slideable through said receptacle, said rod having two transverse legs of equal length spaced apart at front end to extend downwardly to make contact with said drill but for stabilizing said receptacle; (g) said tabs being elongated to aid in measuring center of said drill bit; and (h) a pair of adjustment screws, each of said screws vertically thread through opposite ends of said receptacle to adjust said receptacle to said longitudinal axis of said drill bit.
Claim 3
Dependent Claim 18 words
A hand drill level as recited in claim 1, wherein said mounting frame is fabricated out of aluminum.
Claim 4
Dependent Claim 18 words
A hand drill level as recited in claim 1, wherein said mounting frame is fabricated out of plastic.

References Cited (Backward Citations)

US2525387A Cited
US2806296A Cited
US3664754A Cited
US4546549A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-04-13 1990-10-13 1991-04-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-04-13 1994-10-13 1995-04-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-04-13 1998-10-13 1999-04-14 $7700.00 Window Closed / Lapsed

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