Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7673882 | Collet holder for a multi-jaw chuck A collet holder for insertion into a multi-jaw chuck. The collet holder includes a multi-faceted body having a smooth bore extending therethrough for housing a standard collet and a cap nut threadably secured to the body. ... | 03/09/2010 |
| 7339158 | Rotary encoder A rotary encoder is clamped coaxially with its pickup shaft (14) on a drive shaft (12) which is to be measured. Two collet chucks are provided for this purpose. The one collet chuck is constructed as a clamping sleeve, which penetrates the pickup shaft... | 03/04/2008 |
| 7331585 | Machining adapter having a collet and positive axial stop An adapter for holding a workpiece to be machined in an accurately located axial position can include a main sleeve having an interior wall defining a passage extending therethrough with at least one inner surface angled inwardly toward a centerline of the passage, ... | 02/19/2008 |
| 7331584 | Chuck with nutating gear reduction A tool chuck may include a chuck body that supports chuck jaws. The chuck body may define a longitudinal axis. A driven gear may be mounted for rotation on the chuck body. The rotational axis of the driven gear may be parallel to the longitudinal axis of the chuck b... | 02/19/2008 |
| 7264429 | Tool free collet assembly A collet assembly, for selectively attaching a tool accessory to a tool, having a collet nut rotatably connectable to the tool, a collet compressible by the collet nut, and a torque application feature movably connected with the tool. The torque application feature ... | 09/04/2007 |
| 7261302 | Collet and lock nut assembly A collet and lock nut assembly includes a collet for receiving a cutting tool shank and a lock nut for creating a gripping force between the collet and the shank. The collet has a nose portion and a body portion separated by an annular groove. The lock nut has a plu... | 08/28/2007 |
| 7249540 | Connector adapter An adapter for installing a connector to a terminal post, wherein the connector is attached to a cable, is presented. In an embodiment, the adapter is comprised of an elongated collet member having a longitudinal axis comprised of a first collet member end, a second... | 07/31/2007 |
| 7178811 | Chuck capable of drawing in and pushing out collet A chuck is composed of a collet sleeve, a sliding member, at least one linkage member, a collet, and a driving member. The collet sleeve includes an axial hole running therethrough and at least one opening in communication with the axial hole. The sliding member is ... | 02/20/2007 |
| 7044478 | Coaxial mounting seat for the shank of a toolholder A mounting seat (1) for machine-tools allowing coaxial engagement of the shank (2c) of a toolholder member (2) includes internally a cylindrical bush (3) supporting a plurality of ball bearings (4i) arranged without p... | 05/16/2006 |
| 7017919 | Chuck A chuck includes a holder body, a clamp sleeve, and a large number of needle rollers. The holder body has a shank portion, a flange, and a chuck sleeve. The clamp sleeve is fitted onto the outer circumference of the chuck sleeve such that the clamp sleeve is rotatab... | 03/28/2006 |
| 6932357 | Gear reducing collet nut assembly A gear reducing collet nut assembly is provided for holding a tool bit. The assembly includes an outer grip sleeve that can be rotated to actuate a clamping structure with a bore for holding a tool bit. More specifically, the assembly includes a planetary gear syste... | 08/23/2005 |
| 6923451 | Tool holder In order to provide a tool holder which greatly reduces frictional resistance between a locknut and a taper collet, and eliminates a twisting of the taper collet during tightening of the locknut, in a tool holder comprising a locknut 13 which pushes a taper c... | 08/02/2005 |
| 6908085 | Rotating tool chucking device A Chucking device comprising a collet with an external taper and a collet holder with a taper socket for the chucking of a rotating part, wherein the taper socket of the collet holder and the external taper of the collet have a taper angle which is smaller than the ... | 06/21/2005 |
| 6902171 | Chuck device To provide a chuck device for preventing the loosening of the fastening condition, a plurality of claws inserted into a hole provided at an end of a body are opened, closed and slid by the rotation of a rotary sleeve and a tool is clamped by means of the claws. A co... | 06/07/2005 |
| 6886835 | Clamp nut and collet chuck The present invention enhances the lubricating property of the sliding surfaces of a clamp nut and a collet, reduces a friction coefficient, prevents the occurrence of seizure, and enhances durability. Accordingly, it is possible to rotate the clamp nut and the coll... | 05/03/2005 |
| 6854741 | Universal collect adapter tool A one-piece constructed adapter collet tool, for adapting a smaller standard collet to a standard oversized spindle on a machine tool. Said one-piece constructed adapter collet having an external configuration constructed to mate said oversized standard spindle conf... | 02/15/2005 |
| 6648567 | Tool-free collet tightener A collet assembly for a tool comprising a collet nut rotatably connectable to the tool; a collet operatively connectable to the collet nut; and a collet wrench movably connected with the tool and engageable with the collet nut for tightening and loosening... | 11/18/2003 |
| 6572119 | Axial chuck A clamping sleeve/tensioning device comprises a clamping sleeve that is positioned inside a conical centering opening of a housing body. A chucking mechanism with rotational body is used to tighten or release the clamping sleeve. The rotational body is pr... | 06/03/2003 |
| 6371705 | Tool holder A tool holder is disclosed for a rotary tool having an elongated cylindrical shank. The tool holder includes an HSK body having a cylindrical bore with a predetermined inside diameter. An elongated cylindrical insert has a throughbore or collet pocket and... | 04/16/2002 |
| 6350087 | Tool-free collet tightener A collet assembly for a tool comprising a collet nut rotatably connectable to the tool; a collet operatively connectable to the collet nut; and a collet wrench movably connected with the tool and engageable with the collet nut for tightening and loosening... | 02/26/2002 |
| 6280126 | Damped tool holder and method A damped tool holder system having, in combination, a longitudinally extending cylindrical tool provided with a forward outer cutting or operating end and a rearward inner end which is to be held within a tool holder; a coaxial tool holder receiving the i... | 08/28/2001 |
| 6209886 | Resecting tool with independent variable axial extension for tool implements and guide sleeves A resecting tool contains a rotatable chuck inside a base for engaging the drive shaft of a motor. The chuck extends into a tubular casing that has an outer actuator sleeve. The sleeve is limited to rotation relative to the casing and is used to move a pa... | 04/03/2001 |
| 6168170 | Chuck with jaw blade rotational stop A chuck is provided for use with a manual or powered driver, such as a drill. The chuck has a body member with angularly disposed passageways formed therethrough. A plurality of jaws are slidably positioned within the angularly disposed passageways. The j... | 01/02/2001 |
| 5957636 | Quick change tool locking and alignment system The present invention comprises a quick-change tool system for a collet in alignment with a spindle of a milling machine. The collet comprises an elongated member having a first end of generally conical configuration with a bore arranged longitudinally th... | 09/28/1999 |
| 5913524 | Chuck with gripping mechanism stop A chuck for use with a manual or powered driver having a drive shaft is provided. A generally cylindrical body has a forward section and a rearward section, the rearward section adapted to mate with the drive shaft of the driver. A gripping mechanism is a... | 06/22/1999 |
| 5911421 | Sealed collet having improved radial flexibility for facilitating removal from a locknut A sealed collet having improved radial flexibility is provided for facilitating removal from a locknut of a chuck assembly. The sealed collet includes a collet body formed from a tubular configuration of elongated gripping fingers separated by elongated s... | 06/15/1999 |
| 5622373 | Chucking device A chucking barrel is connected to a holder capable of being fitted into a rotation spindle of a machine tool. A plurality of axially extending projections are disposed in equally spaced relationship as viewed in the circumferential direction on the connec... | 04/22/1997 |
| 5511801 | Integrated collet and chuck device An integrated and collet and chuck device includes a body member configured to be non-movably fixed to a drive spindle of a driving tool. An outer sleeve member is disposed about a portion of the body member and is rotatable relative to the body member. T... | 04/30/1996 |
| 5402580 | Chuck mechanism A chuck mechanism is described, which is easy to handle with a chuck clamping handle of increased diameter and is capable of achieving smooth movement of its reciprocally movable portion of reduced weight and assures safe operation with the least exposure... | 04/04/1995 |
| 5213015 | Variable nut driver A variable nut driver includes a multi-fingered collet with individual jaw faces at the free ends of the fingers and a ring connecting together all of the fingers at their other ends. The collet is contained within a tubular member secured to a handle. A ... | 05/25/1993 |
| 5028178 | Spring collets A chuck having a spring collet is disclosed. The spring collet has a plurality of pairs of adjacent collet segments with interstices formed between each of the collet segments. The interstices of the collet each having radially extending cutout seats with... | 07/02/1991 |
| 4938490 | Drawback collet A tapered drawback collet which engages a conically tapered collet chamber in chuck body. A collet extension is axially displaced through high reduction gearing including a worm gear and threaded feed ring acting on a sleeve having only axial contact with... | 07/03/1990 |
| 4860497 | Drill grinder having drill holder including chucks for gripping shank and body of the drill A drill grinder for grinding a point of a drill including a shank, and a body which has the point. The drill grinder includes a holding device for removably holding the drill, and a grinding wheel adapted to be forced on the drill point, and to thereby gr... | 08/29/1989 |
| 4815899 | Tool holder and gun drill or reamer A tool holder for a gun drill or reamer has internal and external cylindrical rear end pilot portions and a radial pilot flange for precisely connecting coaxially with a rotatable and axially moveable power source. A sleeve confined coaxially within the i... | 03/28/1989 |
| 4699389 | Workholder A workholder arrangement which employs a support module which can have one of several different workpiece-engaging units interchangeably mounted thereon so that the same workholder module can be readily adapted to function several different ways, such as ... | 10/13/1987 |
| 4477095 | Collet adapter A collet adapter enabling use of a smaller collet in a larger spindle, the adapter comprising a reducer bushing externally configured so as to fit within the spindle and an internal configuration such as to receive the collet, the reducer bushing having a... | 10/16/1984 |
| 4437801 | High torque chuck assembly and collet A chuck assembly and collet for retaining a commercially-available large-diameter, high-torque end mill (or similar) tool against axial pullout and against radial (or rotational) movement with respect to the assembly. The tool includes two axially spaced ... | 03/20/1984 |
| 4387906 | Tool or workpiece chucking device A chucking device for tools or workpieces having a cylindrical or slightly conical chucking surface. The chucking device includes body (1), which is provided with truncated cone-shaped surface (3), cavity (4) located inside the surface and along a substan... | 06/14/1983 |
| 4377292 | Chuck assembly and collet The chuck assembly and the collet for retaining an end mill tool against axial pullout. The collet includes a radially compressible body having a tapered outer surface, a central bore and a radial aperture extending from the outer surface into the central... | 03/22/1983 |
| 4266895 | High torque chuck assembly and collet A chuck assembly and collet for retaining a commercially-available large-diameter, high-torque end mill (or similar) tool against axial pullout and against radial (or rotational) movement with respect to the assembly. The tool includes two axially spaced ... | 05/12/1981 |
