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Class 411/408 - Frictional engagement


Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Subject matter wherein the head driving structure consists
No. of patents: 33
Last issue date: 09/28/2010


NumberTitleIssue Date
7802954Plastic nut with retaining elements to hold the nut in a socket of a tool
A plastic nut has raised regions forming retaining elements for retaining the nut in a socket of a tool. The retaining elements are formed at corners or faces of a polygonal tool engagement region. Tapered rib retaining elements may be formed at alternate corners, o...
09/28/2010
7798757Screw driving device and screw
To provide a screw fastening device that, when performing a screw tightening operation, can substantially reduce the running torque directly applied by external force to a screw driving device. A characteristic constitution is adopted that equips a screw driving dev...
09/21/2010
7438513Ribbed fastener
A fastener is provided comprising a shank having a head at one end and a tapered tip at the other end, and a threaded section having a helical thread on the shank. The fastener also comprises, on the head, side surfaces for engagement with a driving tool, and wherei...
10/21/2008
7293949Spiral drive fastener with friction engageable surface
Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surf...
11/13/2007
7255522Spiral drive fastener with engagement ramp
The fastener of this application is designed to facilitate the insertion of rotating power driven tools into the fastener recess. The recess of this fastener generally uses spirally configured driving surfaces and is formed in a counterbore in the upper surface of t...
08/14/2007
7186067Fastener with attached pivotable handle
The fastener includes a shaft having a first end and a second end, the first end of the shaft includes a threaded portion. A head is connected to the second end of the shaft and a flange extends radially outward from the head. A handle is connected to the head and t...
03/06/2007
7128513Screw and driver therefor
A screw (10) has a threaded shank (12) and a head (14). The head has a recess (18) that comprises three lobes (18a, b, c). Each lobe is separated by a curved drive flange (20a, b, c). A driver (100) has ...
10/31/2006
7051624Security nut, bolt and screw
A security screw fastener, e.g. a nut or bolt having a head (3) around which is a curved exterior surface (5) which is at least partially conical or dome-shaped on which several left-handed and right-handed grooves (12, 13) are formed which are ...
05/30/2006
6997661Attachment for decorative objects for vehicles
An attachment means allows for easy attachment of a decorative item or attachment to a vehicle. The attachment means includes a mounting member comprising a flexible strip, which supports the decorative attachment. A plug is attached to each end of the mounting memb...
02/14/2006
6889580Socket for adapting itself to open ends of wrenches of different sizes
A socket capable of adapting itself to an open end of one of a plurality of wrenches of different sizes is disclosed. The socket comprises a lower connecting section including a cavity, and a four-sided actuation block projected from a top of the connecting section,...
05/10/2005
6874985Captive nut assembly
A captive nut assembly that allows removal of one or more workpieces and/or provides access to an area between a plurality of workpieces is provided. The captive nut assembly includes a screw with an elongated shank that is adapted to be located in an opening of one...
04/05/2005
6843627Wrenchless blade clamp assembly
A wrenchless clamp assembly is provided to secure a tool disc, such as a circular saw blade, to a shaft of a power tool. The blade clamp assembly includes an outer flange positionable against an outer side of the blade and a manually tightenable click bolt that incl...
01/18/2005
6808347Tensioning nut to secure a disk-shaped tool
A tensioning nut to secure a disk-shaped tool is threadable onto the threaded spindle of an electric tool, particularly an electric hand tool with run-out brake such as a right-angle grinder. The nut includes a nut body provided with a corresponding thread, with a c...
10/26/2004
6796551Tamper resistant carburetor mixture needles
A tamper resistant mixture adjustment screw arrangement for a carburetor. The arrangement includes a carburetor body having at least one air/fuel adjustment screw threaded therein. The adjustment screw has a threaded shank and a head portion. The head portion is def...
09/28/2004
6691988Tamper resistant carburetor mixture needles
A tamper resistant mixture adjustment screw arrangement for a carburetor. The arrangement includes a carburetor body having at least one air/fuel adjustment screw threaded therein. The adjustment screw has a threaded shank and a head portion. The head por...
02/17/2004
6669423Toolless thumb screw with adjustable height knob
The present invention provides a mounting system for components in the housing of a computer server. The mounting system is preferably a height-adjustable thumb screw assembly, which allows for the components to be installed or removed without the use of ...
12/30/2003
6364585Torque-controllable screw with knob
In the screw of the present invention, a screw shaft and knob have a torque controller which rotates the screw shaft and the knob together until a rotating torque between the screw shaft and the knob reaches a predetermined level, and slips the knob towar...
04/02/2002
6276651Mounting device for flagpoles
A mounting device (14) for a flagpole (10) is mounted on a fixed horizontal support rail (16). Mounting device (14) has two generally identical parallel clamping plates (18, 20) each having a flagpole opening (28) for receiving the flagpole (10) and a stu...
08/21/2001
5947671Hand actuable clamping device with circumferentially extending tightening members
A clamping mechanism is configured for receipt on a threaded drive spindle to hold a working tool relative to the drive spindle. The mechanism includes a flange surface disposed to abut against a working tool in an operational mode of the device, and a ro...
09/07/1999
5871322Clamp screw
A clamp screw for clamping a rotating member including a threaded member, a flange member axially movable with respect to the threaded member, and an operating ring for actuating the clamping screw. The clamp screw includes a ball screw transmission mecha...
02/16/1999
5846042Fastener/shaft locking and adjustment apparatus
A fastener/shaft locking and adjustment apparatus and locking system which precisely positions, positively locks and avoids slippage of a positive locking nut along an elongated element. The positive locking nut includes a locking spline, an outer knurled...
12/08/1998
5810533Screw for fastening
A screw for fastening that includes a male or female screw formed on its inner core area and including threads located about its outer circumference. A flange ring is located generally at one edge of the screw member in a manner so to be free to turn rela...
09/22/1998
5549432Composite coupling nut and method of making same
A composite coupling nut and method of making the same wherein a substantially rigid annular body portion with an internal threaded portion is provided with an outer annular layer of an elastomeric material formed thereon in intimate juxtaposed relation t...
08/27/1996
5382125Screw unit
Screw unit with a closing screw having a screw head for the aseptic closing of an internal thread of a member and an introduction post in firm, but detachable connection on the closing screw. The detachable connection is formed by a tongue in an end of the pos...
01/17/1995
5312198Jack extension tube
A jack extension tube for use on power seat adjuster mechanisms for vehicles is provided comprising an elongated tube having a first section and a second section spaced from the first section. A threaded member includes a knurled outer surface and is fric...
05/17/1994
5062895Chemical composition, and methods of constructing and utilizing same
A composition including ethylene glycol and friction particles mixed together in predetermined proportions. The composition is used to aid in the removal of headed fasteners. The composition may also be used in place of a lock washer. The composition is m...
11/05/1991
4955744Clamping fixture for axially clamping a tool in place, in particular a disc
A clamping fixture for axially clamping a tool, on a flange of a driven spindle and comprising a clamping nut having an internal thread to be screwed on an end portion with an outer thread of the driven spindle, a clamping member arranged between the tool...
09/11/1990
4457654Tool gripping fastener
A fastener comprising a head, a shank, and a cap. The head has a recess in its top surface dimensioned to accommodate an appropriate tool for installing the fastener. The cap covers a substantial portion of the head and conforms closely to the head, exten...
07/03/1984
4355552Recessed head screw
A modified Phillips-type cruciform recess in a screw or the like, which provides a cling-fit with a driver by causing deflection of the flutes of the driver against the walls of the slot in the recess, comprises a central socket portion and radially exten...
10/26/1982
4325153Combined screwdriver and boring apparatus
A combined screwdriver and boring apparatus comprising a tool having a handle, removable cutting and screwing blades, each of the blades having both downwardly tapered cutting edges thereon and an elongated tip adapted to enter a hole in the slotted head ...
04/20/1982
4311071Screw driver and screw head system
A screw driver has a handle, shaft and blade with the bottom edge of the blade being flat and having flat sides which incline inwardly from the bottom edge. To turn the screw, the screw driver is placed with its bottom edge in the gap between protruding (...
01/19/1982
4171662Security screw
A screw having its head shaped to prevent its removal by unauthorized persons, characterized in that it has peripherally thereof an odd number of sides arranged symmetrically with respect to the center of the head and inclined to the axis of the screw to ...
10/23/1979
4149434Screw and screwdriver therefor
A screw having an annular socket formed concentrically in the outer surface of its head, with at least a pair of radial walls in said socket, and adapted to be used with a pair of special tubular drivers adapted to be inserted coaxially into said socket a...
04/17/1979
 
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