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Class 411/534 - Including antifriction means


Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Subject matter wherein the element includes means adapted
No. of patents: 25
Last issue date: 04/24/2007


NumberTitleIssue Date
7207760Washer and fastener provided with a washer
A washer has a body having an axis and provided with a first face surface located at one axial side and adapted to cooperate with a nut, a second face surface located at an opposite axial side and adapted to cooperate with an object to be assembled or disassembled, ...
04/24/2007
6994496Roof bolts for use in mines, a method for their production and a method for their installation
The invention comprises a roof bolt and nut in screw threaded engagement, said bolt comprising a shaft for insertion in a hole drilled in a mine roof and a threaded portion engaged by the nut whereby the bolt may be rotated. The nut is offset with respect to the lon...
02/07/2006
6939046Hydrodynamic bearing, spindle motor and hard disk drive
A hydrodynamic bearing having a shaft, which is fixedly connected at one end to a rotating component, and a bearing sleeve, which encompasses the shaft at its other free end with a slight clearance. The sleeve and the shaft form a concentric bearing gap. The shaft a...
09/06/2005
6939076Oil-less rivet system for a reclining chair mechanism
An improved rivet system is disclosed. A wall proximity reclining/tilt chair includes the improved rivet system which eliminates the need for oil lubrication and additional bushings. The rivet system is such that installation is simplified and manufacturing inconsis...
09/06/2005
6883401Power tool for fastening objects
A power tool for fastening objects has a housing with a non-rotatable element, a power drive in the housing and provided with a rotatable driving element, and a fastener part including a bolt having a thread and an axis and introducable into parts forming an object,...
04/26/2005
6789992Washer having oil-bearing holes
A washer in accordance with the present invention comprises an axial hole and a plurality of oil-bearing portions. The oil-bearing portions are located on an inner surface opposite to an outer surface and surround the axial hole. ...
09/14/2004
6729819Bolt lubricating device and method
A friction reducing device comprises a stretchable thin film of elastomeric material impregnated or dusted with lubricating material. The thin film adheres to an annular member through which a fastener element having external threads can pass. ...
05/04/2004
6435791Wheel fastener assemblies
A fastener assembly includes (a) a fastening member that includes an out-of-round portion centered about a longitudinal axis and configured for engagement with a torque-transmitting tool, a frustoconical load-bearing surface that extends radially outwardl...
08/20/2002
6224288Corrugated slider washer bearing
A slider washer bearing in a bolted interface assembly allows relative differential thermal expansion and contraction motion between a component plate fastened to a base plate by a bolt, without inducing large strains and stresses upon the plates or the b...
05/01/2001
6210067Clip flexure slider washer bearing
A clip flexure slider washer bearing in a bolted interface assembly allows differential thermal expansion and contraction between a component mounting plate or flange fastened to a base plate by a bolt. The bearing functions as a thin lubricated spacer be...
04/03/2001
6036422Roller washer bearing and method
A linear roller washer bearing in a bolt interface assembly allows relative differential thermal expansion and contraction motion between a component plate and a base plate fastened together by a bolt without inducing large strains and stresses upon the b...
03/14/2000
6022178Flexure washer bearing and method
A linear flexure washer bearing in a bolt interface assembly allows relative differential thermal expansion and contraction motion between a component plate and a base plate fastened together by a bolt without inducing large strains and stresses upon the ...
02/08/2000
6007286Driving screw and a method for forming lubricating film thereon
A feed screw including a screw shaft, a nut meshed with the screw shaft and a plurality of rolling members inserted between the screw shaft and the nut, wherein a solid film of a fluorine-containing polyurethane polymer is formed on any portions in rollin...
12/28/1999
5899648Ball screw clamping device
This invention has as its purpose the provision of a clamp screw in which the loss of clamping force is greatly reduced, a powerful clamping force can be obtained with a small rotational input, a sufficient clamping force can be obtained by a manual opera...
05/04/1999
5667347Fastener
An improved fastener assembly is disclosed comprising a threaded fastener combined with two disc shaped washer components wherein one disc component is resilient and mounted to relatively rotate with respect to the threaded fastener and other disc compone...
09/16/1997
5624343Pinion mate thrustwasher
A differential gear assembly comprising a rotatable case, a spider having at least one shaft mounted on the case for rotation therewith, a pinion gear rotatably mounted on the shaft and a thrustwasher non-rotatably mounted on the shaft and disposed betwee...
04/29/1997
5564875Locking fastener
A locking fastener (10) comprises a nut (12) having a threaded portion (14) formed about a central axis (16) of the fastener. A head portion (18) of the nut is formed integral to the threaded portion (14), for gripping the fastener during tightening or lo...
10/15/1996
5533852Fastener bearing assembly
A fastener bearing assembly for reducing the turning friction between a head of a fastener and an object to be fastened, for example, a vehicle wheel. The assembly comprises a first part having a first pressure transmitting surface and a second part havin...
07/09/1996
5232311Roof control system
A roof control system for underground strata has an elongated bolt adapted for insertion into a hole bored into the underground strata. The bolt is securely anchored in the hole at a location where a significant length of the bolt remains between the open...
08/03/1993
5222835Resin-mixing article for mine roof anchor
An article for assisting in the mixing of components of a resin grouting material within a drill hole in a rock formation to form a hardenable mass anchoring the threaded, distal end of an elongated bolt in the hole. The article includes an annular base p...
06/29/1993
4984938Coated washer for an anchor bolt system
The anchor bolt assembly is of the tensionable type used in mine roofs and the like in which the anchor bolt assembly is positioned in a bore hole of a rock formation. The bolt assembly includes an elongated bolt shaft with a head at one end and is thread...
01/15/1991
4746248Anchor bolt assembly
An achor bolt assembly for securing a bolt in a bore hole is provided with supporting members for applying pressure against an area surrounding the mouth of the bore hole wherein contacting surfaces of the supporting members are provided with a coating of...
05/24/1988
4619559Rock bolting
A rock bolt assembly incorporating a friction reducing washer of plastics material between the nut and the plate washer to give an increased tension in the bolt for a given torque....
10/28/1986
4433578Wheel clamping nut with freely rotating insert
A wing nut with a threaded axial passage is adapted to engage the threads on the horizontal balancing shaft of a wheel balancer having an abutment thereon. A wheel to be balanced is placed on the shaft and is arranged to be held in tight engagement with t...
02/28/1984
4362449Fastener assemblies
Fastener assemblies for mounting a workpiece such as a hub centered wheel rim include a threaded fastener and a clamp washer. The fastener includes a body having a thread structure and a structure engageable by a tool for tightening of a threaded joint to...
12/07/1982
 
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