Cutting by use of rotating axially moving tool – Processes – Bit detachable
Reexamination Certificate
1999-11-16
2001-02-13
Bishop, Steven C. (Department: 3722)
Cutting by use of rotating axially moving tool
Processes
Bit detachable
C408S016000, C408S079000, C408S07200R
Reexamination Certificate
active
06186708
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a drill guide for use in installing a lock into a door and particularly to a drill guide that uses a level to align the drill guides used to secure the lock in the door.
PRIOR ART AND INFORMATION DISCLOSURE
Common procedure for a builder to install a door is to order a door panel that has a standard size aperture (hole through the door) for receiving the lockset. The aperture is typically located near one long edge of the door 36 inches from the bottom edge. The aperture typically has a two inch diameter selected to receive the common lock set. Installation of the drill set requires that a pattern of holes be drilled by the carpenter in the door proximal to the two inch hole through which bolts are inserted to secure the lock set. The position and size of the smaller holes varies according to the lockset selected by the builder.
Alignment of the holes with the edge of the door is very critical for the sake of appearance as well as for ease of installation of the lockset. Consequently, some rather elaborate drill jigs have been disclosed that are available along with the lockset as aids in installing the doors. Such aids are particularly useful when large numbers of doors are being installed such as when erecting large tracts of residences.
The drill jigs of the prior art are typically plates holding an array of drill bushings. In a common jig, a shoulder is positioned along one edge of the plate. The plate is positioned on the door to be drilled with the shoulder abutting an edge of the door. In this manner, the holes to be drilled are aligned with the edge of the door. This arrangement is only satisfactory when all of the doors have their apertures located at the same distance from the edge of the door.
In another arrangement, the jig is a channel that straddles the edge of the door with one leg (plate) of the channel on each side of the door. Each plate has an array of drill bushings, each bushing aligned with a bushing in the other plate. This arrangement is satisfactory only when all of the doors have the same thickness.
For example, U.S. Pat. No. 5,116,170 to Palmer et al discloses a drill jig for installing a lockset with a flange for attaching a C-clamp.
U.S. Pat. No. 5,479,802 to Miller discloses a method of installing a combination lock deadbolt assembly with a dial lock.
U.S. Pat. No. 5,915,891 to Fridman shows a drill jig for installing a lockset in a door.
SUMMARY
In view of the problems posed by a requirement to install locksets in doors wherein each door may have any one of a range of thicknesses and aperture locations, it is desirable to provide a drill jig for drilling an array of holes in a hanging door wherein the array of holes can be in various locations and the thickness can be in a range of thicknesses.
This invention is directed toward a plate having mounted on one side a locating disk that fits snugly into the aperture of a door when the plate is laid against the surface of the door. An array of drill bushings is mounted in the plate at required locations relative to the aperture. At least three rubber (bumper) feet are mounted on the side of the disk having the guide disk which protect the door against scratching by the drill jig. A level is mounted on one edge of the plate in view of the carpenter installing the lockset so that when the carpenter inserts the disk into the aperture in the door, he may adjust the orientation of the plate so that the bubble in the level indicates that the level and the edge on which the level is supported is horizontal. When the level is horizontal, the array of drill bushings in the plate is square with the horizontal plane. To hold the jig plate against the door during drilling, a tool pressed against the side of the door opposite the drill jig has a teehook extending through the door aperture and hooks the far side of the jig plate.
REFERENCES:
patent: 5116170 (1992-05-01), Palmer et al.
patent: 5222845 (1993-06-01), Goldstein et al.
patent: 5915891 (1999-06-01), Fridman
patent: 677563 (1991-05-01), None
Bishop Steven C.
Smith Robert Samuel
LandOfFree
Drill guide and method for installing a door lock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drill guide and method for installing a door lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill guide and method for installing a door lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2593720