Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7344141 | Collet system for rotary tools A collet system for a rotary tool includes a collet for receiving a bit; a wrench assembly for engaging the collet, the wrench assembly moving along an axis extending axially through the collet between a first position where the wrench assembly is disengaged from th... | 03/18/2008 |
| 7337697 | Depth stop device A depth stop device for a screw driving tool includes an adjusting ring (30), a connection sleeve (22) for rotatably mounting the adjusting ring (30) on the nose member (6) of the screw driving tool housing (4), a substantially sle... | 03/04/2008 |
| 7261499 | Adjustable drill microstop with multiple offset depth settings An adjustable drill microstop apparatus is employed with a drill and a drill bit to limit the depth of a hole drilled into an object surface by the drill bit. The apparatus has a housing and a nose piece that is mounted for reciprocating axial movement in accordance... | 08/28/2007 |
| 7210881 | Sleeved stop for a drill bit A stop for use with an electric drill bit, the stop having at least one threaded sleeve for positioning the stop relative to a surface into which the drill bit will extend. The stop may have both an inner and an outer sleeve. The sleeves are mounted coaxially, one i... | 05/01/2007 |
| 7144206 | Attachment element for securing a depth stop on a hand-held power tool An attachment element for securing a depth stop (2) of a hand-held power tool (4) includes a pin guide 5 with one or more noses (8a, 8b) for mounting the attachment element (1) on the power tool (4) and ... | 12/05/2006 |
| 7141074 | Variable depth drill with self-centering sleeve A surgical drill assembly is provided that includes an elongate shaft having a proximal end adapted to mate to a driver mechanism, and a distal end having a bone preparation element formed thereon. An elongate, hollow sleeve is coupled to, but slidably disposed arou... | 11/28/2006 |
| 7121776 | Housing retrofit assembly for a milling machine or the like The present invention is a housing retrofit assembly for a milling machine or the like, including a quick adjusting stop nut for selective sliding coarse adjustment and rotational precision fine adjustment for rotatable engagement with a threaded rod or shaft in clo... | 10/17/2006 |
| 7048477 | Drill measurement stops A depth stop for use with a drill bit comprises a tubular body having an opening therethrough. Used with a drill bit whose bit portion includes a cutting end, and a shank portion, the depth stop is frictionally positionable on the bit portion at a specified point fr... | 05/23/2006 |
| 6872036 | Hand tool apparatus for orbital drilling A hand tool apparatus uses a cutting tool with a first width and a tool axis to machine a hole in an object. The hole has a second width at least as large as the first width of the cutting tool. The tool axis passes through a predetermined point on a surface of the ... | 03/29/2005 |
| 6851898 | Dust removal unit for a hand tool device A dust removal unit (1) includes an adjustable axial depth stop (5) for an at least partially rotatable hand tool device (2) with a radially displaced, rotationally fixed, telescopable, axially limited movable suction tube assembly with a suctio... | 02/08/2005 |
| 6796753 | Tooling accessory for hand drilling A tooling accessory for use with a slightly modified hand drill to produce accurate holes includes a base plate with a central opening having a vertical member arising at 90 degrees from the perimeter of the base plate. A body of a conventional hand drill is modifie... | 09/28/2004 |
| 6789986 | Stop for a threaded rod The present invention is a quick adjusting stop nut for selective sliding coarse adjustment and rotational precision fine adjustment for rotatable engagement with a threaded rod or shaft in close tolerances, which provides stable precision engagement with the shaft,... | 09/14/2004 |
| 6609860 | Hand machine tool with depth stop A manual machine tool (10) with a housing (12) that carries an adjustable bit stop (32), particularly on a supplemental handle (28), becomes more convenient and safer to operate because the bit stop (32) can be fixed in positive fashion, particularly in l... | 08/26/2003 |
| 6547013 | Screw driving tool A screw driving tool including an axially displaceable, drive spindle (5) located in the housing, a bit holder (6) having a shank (7) which releasably connects the bit holder (6) with the drive spindle (5), an axially adjustable depth stop (9) surrounding... | 04/15/2003 |
| 6447221 | Structure of drilling machine A structure of a drilling machine having a main machine provided on one end thereof with a control switch, with this, by pressing the control switch to position a clamping portion for a bit, the bit can be changed conveniently; and an adjusting and fixing... | 09/10/2002 |
| 6443676 | Automatic locking depth guide for cutting tools and the like A guide for setting the depth of cut of a cutting tool, or other hand-held power tool, which automatically locks into a desired position to set the depth of a cut without requiring manual operation of a locking knob or similar structure. The depth guide i... | 09/03/2002 |
| 6368031 | Axial feed apparatus having an adjustable feed stop and associated method An axial feed apparatus having an adjustable feed stop is provided. The axial feed apparatus generally comprises a power feed module having an adjustable stop mechanism engaged therewith, wherein the adjustable stop mechanism may comprise a spindle thread... | 04/09/2002 |
| 6283683 | Hinge drilling jig A device for positionally accurately guiding cup drills, particularly for producing blind-end holes for cup hinges in plate-shaped structural components composed of wood or a substitute wood material, is composed of a U-shaped base body which can be place... | 09/04/2001 |
| 6176652 | Drilling machine with vacuum suction table A drilling machine primarily employed in drilling holes in a glass plate comprises a vacuum suction table for putting a glass plate thereon, a plurality of fasteners to fasten vacuum suction table on the glass plate, an adjusting screw for precisely posit... | 01/23/2001 |
| 6050759 | Depth of cut mechanism A hand held router (2) includes a rotatable member (22) having screwthread engagement with the housing (4) of the router (2). Rotation of the rotatable member (22) causes adjustment of the depth of cut of the router bit (18) protruding through the rotatab... | 04/18/2000 |
| 6039518 | Surface referenced depth control The subject invention controls the penetration of a drill or router into a cutting surface by preventing excessive downward travel by a spindle once a preset depth is reached. This is achieved by placing a mechanical stop on the pressure foot linkage and ... | 03/21/2000 |
| 5988242 | Pivoted fence with locating post A router and other cutting tools with a fixed center such as drills, shapers, milling machines, etc., used for cutting wood, metal or other materials, is provided with a fence mechanism for either a table or the base of a portable tool, for rapid and easy... | 11/23/1999 |
| 5954460 | Drill stand An improved drill stand is provided which includes a stand column slidably connected to a bearer unit so that the position or height of the bearer unit with respect to the stand column may be adjusted. The bearer unit includes a gear segment which is bias... | 09/21/1999 |
| 5947664 | Stop device for use with milling machines A stop device that can be readily interconnected with a variety of commercially available vertical milling machines to precisely control the vertical travel of the quill mechanism of the milling machine. The bolt-on stop device of the invention includes t... | 09/07/1999 |
| 5915893 | Multistage bit and stopper A multistage bit is provided with a base part having a profile of stepped conical body with its tip cut off, and with a tip drill having a blade B of the smaller diameter than the blade B which is formed on the stage 2 at the foremost end of the base part... | 06/29/1999 |
| 5881613 | Screwdriver having disengaging mechanism A screwdriver of the present invention is designed for use with power tools. The screwdriver provides an automatic disengagement mechanism to prevent excess penetration of the screw into a work surface. The screwdriver has a housing enclosing the motor an... | 03/16/1999 |
| 5853274 | Vertical adjustment mechanism for fixed-base router The fixed-base router has an annular base member supporting a cylindrical base member. A cylindrical motor housing is telescopingly received within the cylindrical base member; the motor housing includes three vertically aligned notches. A vertically disp... | 12/29/1998 |
| 5829931 | Removable depth guide for rotary cutting tool A drywall cutting tool has a removable depth guide. The depth guide may be removed from and installed on the tool housing by rotating the guide relative to the tool. The use of a fastener or separate tool is not required. The depth guide may be adjusted f... | 11/03/1998 |
| 5795110 | No mar depth stop A depth stop is provided that is selectively attachable to a cutting tool at an operator-selected location. The end of the depth stop that comes into contact with a work piece during operation is covered with a rotating cap. The cap prevents the work piec... | 08/18/1998 |
| 5779408 | Fluid control quill stop A quill stop for a milling machine, drill press, or other like machine. The quill stop includes means for automatic control of coolant flow. The quill stop includes a passage through which high pressure air flows. A valve in the passage controls the air f... | 07/14/1998 |
| 5769574 | Method and apparatus for precision boring of pocket-holes A device and method for boring pocket-holes in frame members having a miter joint to prepare them for final assembly. Two frame members are placed on the positioning frame of the invention and clamped against the positioning frame and together at the mite... | 06/23/1998 |
| 5743683 | Removal tool for flush rivets A tool for removal of rivets includes three main sections--a tubular body section, a base, and a drive shaft assembly. The drive shaft assembly includes an upper portion to be received in the chuck of a rotational source of power and a lower portion to be... | 04/28/1998 |
| 5690451 | Depth stop assembly for a portable electric drill A drill assembly including a drill and depth stop assembly is disclosed. The drill includes a housing, an electric motor and a chuck operatively driven by the electric motor about a drill axis. The depth stop assembly includes a depth stop rod, a mounting... | 11/25/1997 |
| 5688082 | Dust extractor A dust extraction housing for a rotary drill has a rear collar 10 which attaches to a stationary boss 14 of the drill and a concertina tube 18 extending forward to enclose the drill bit 22. A forward end piece 24 of the housing has an outlet 26 for attach... | 11/18/1997 |
| 5601387 | Depth adjusting system for a power tool A depth adjusting system particularly for power-driven screwdrivers comprising an adjustment collar that is releasably fitted to the housing of the tool and a depth locator which screws onto the collar for non-rotational axial movement relative to the hou... | 02/11/1997 |
| 5577868 | Depth stop for a drill press A depth stop for a drill press includes a block having a passage defined centrally therein and a cut-away laterally defined therein which communicates with the passage, an oblong element received in the block from the cut-away and a resilient element disp... | 11/26/1996 |
| 5556241 | Quick stop device A quick stop device for abruptly interrupting the cutting of a workpiece by a cutter is disclosed. The quick stop device employs an outer housing connected to an inner workpiece holder by at least one shear pin. The outer housing includes an appropriate s... | 09/17/1996 |
| 5486177 | Patella planer with adjustable stop A patella planer for preparing a resected surface on a patella in a single operation. The patella planer has an adjustable stop which can be used on either side of the planer so that the planer may be used on the right or left knee. The adjustable stop ha... | 01/23/1996 |
| 5442843 | Drilling machine for drilling holes in furniture parts A drilling machine for drilling securing holes for furniture fittings, for example hinges, includes a drive motor which drives drills by way of a multispindle drilling head with a drill gearing and a plurality of drilling spindles. A stop rule with adjust... | 08/22/1995 |
| 5382120 | Drill bit depth minder The present invention relates to a device that is hand held and independent of a drill, either hand held or powered by electricity. This device consists of a tubular housing with a turn screw plunger shaft and a scale for measurement in inches on one side... | 01/17/1995 |
