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Class 411/231 - With means resiliently biasing the nuts apart


Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Device wherein the internally threaded elements are urged
No. of patents: 22
Last issue date: 12/09/2008


NumberTitleIssue Date
7462007Reactive biasing fasteners
Several embodiments of reactive biasing fasteners utilized in place of jam nuts and Belleville washers, providing for the storage of a pre-load and effectively providing a locking function to prevent unintended loosening of an associated bolt. The embodiments resili...
12/09/2008
7316533Fastener for exerting tightening torque to fastening member screwed into mounting base
An object of the present invention is to provide a fastener made compact on the whole and capable of producing a strong fastening strength. To attain the object according to the invention, there is provided a fastener for being fitted to a fastening member (B) while...
01/08/2008
7150132Continuous hold-down system
A hold-down system used to secure a building structure to the foundation, thereby enabling the building to better withstand forces like high winds and earthquakes because these forces may then be distributed to the foundation. The hold-down system is characterized a...
12/19/2006
7037060Shrinkage compensator for building tiedowns
An automatic, self-energized, length extending, take-up unit for general use in wall hold down systems. The take-up unit is generally installed as a separate element, independent of threaded retaining elements of a hold down system. One embodiment includes an intern...
05/02/2006
7004701Tamper resistant rotably shrouded security cap and tool
A tamper resistant rotably shrouded security cap and tool for preventing unauthorized access to a fluid handling system. The shroud and cap have cooperating engagement means that allows the shroud to rotate freely about the security cap, such that a grip on the shro...
02/28/2006
6994503Quick-lock nut for a disc-like tool
A quick lock nut (1) for positive friction locking securement of a disc-like tool (2) to an external thread (3) on a working spindle (4) driven about an axis of rotation (A), having an associated inner threaded part (5) and a manua...
02/07/2006
6991414Fastener assembly
A fastener assembly for making it easier to tighten and loosen the fastener in confined work spaces. The fastener assembly includes a first end-cap member having a head member, a first boss-like member being attached to a side of the head member, a male extended por...
01/31/2006
6585469Shrinkage compensator for building tiedowns
An automatic, self-energized, length extending, take-up unit for general use in wall hold down systems. The take-up unit is generally installed as a separate element, independent of threaded retaining elements of a hold down system. One embodiment include...
07/01/2003
6459770Backlash-resistant drive assembly for collimator in a CT scanner
An assembly including a base and first and second spaced-apart shafts secured to the base and extending generally perpendicular to an elongated aperture of the base. A carrier includes a first support member slidingly receiving the first shaft, a second s...
10/01/2002
6390747Shrinkage compensator for building tiedowns
An automatic, self-energized, length extending, take-up unit for general use in wall hold down systems. The take-up unit is generally installed as a separate element, independent of threaded retaining elements of a hold down system. One embodiment include...
05/21/2002
6301334Backlash-resistant drive assembly for collimator in a CT scanner
A drive assembly for a collimator of an X-ray imaging device includes a carrier which is adapted for translation in the z-direction along two parallel shafts. One of the shafts is coupled to a driver, such as a motor, by a backlash-resistant nut assembly....
10/09/2001
6257813Screw clamping device with automatic clamping means
An automatic screw clamping device for automatically tightening bolts fitted in a metallic mount member, which is hard to nail includes a casing (2), a rotator (4) disposed in the casing (2) in a manner that the rotator may rotate and move up and down, a ...
07/10/2001
6041671Miniature anti-backlash nut assembly
An anti-backlash mechanism is described in the form of a pair of nuts or nut halves with internal threads complementary to the threads on a lead screw. The mechanism is traslated by rotation of the screw. One of the nuts has an outer cantilevered wall wit...
03/28/2000
6027294Double nut thread friction locking safety cap device with opposing threads with a captured spring or spring lock washer
A double nut thread friction locking safety cap device assembly consisting of several components, which are so constructed and assembled to resist the rotational effects of external forces. The resistance is achieved by the use and placement of opposing t...
02/22/2000
6019556Locking fastener assembly
A locking fastener assembly comprising a fastener having a shaft (12) and a head (14 or 114) and first threads (16) for placing the shaft (12) in tension to clamp a part (18). A threaded washer (20) has second threads (22) for disposition between the head...
02/01/2000
5709514Liveload assembly
A liveload assembly for communicating a load to packing material through a flange member of a fluid flow apparatus while pre-stressing a stud holding the flange member with a different loading, in which a first set of compressible belleville washers are r...
01/20/1998
5474409Fastener assembly
A locking fastener in which coacting ramp surfaces are provided on a nut and washer assembly to generate wedging forces in response to backing off movement of the nut which urge the nut into tighter engagement with the associated bolt and the workpiece an...
12/12/1995
5252015Adjustable pre-load screw and nut assembly
An adjustable pre-load screw and nut assembly is described including a screw with external helical threads and a nut having two separate portions each with internal threads complementary to those on the screw. An adjustment nut and adjacent O-ring can be ...
10/12/1993
5074012Self-locking hold-down clamp
A self-locking clamp has a handle which locks to a non-rotating member if the handle starts to turn while in clamping use. The clamp has a retractable collar which is splined to the handle and is biased toward locking engagement with a sleeve that in turn...
12/24/1991
4818578Composite structure attachment system
A load-bearing member is positioned in a slot extending through a composite structure of laminated reinforced plastic having overlapping layers of fabric plies embedded in a thermoplastic material. A connecting means such as a shank of a bolt connects the...
04/04/1989
4812096Self-tightening nut
A fastener device for automatically maintaining a tightening torque on a threaded structural member under stress which would otherwise become loose when the stress is reduced. The device comprises a first nut member, a second nut member axially aligned wi...
03/14/1989
4692078Nut device having automatic positive locking
The device has a screwthreaded collar 9 constituting a brake and trapped in a cavity 5 of a nut 2 with respect to which it is connected to rotate and axially movable in the cavity between an internally first position in which its screwthread 12 is in phas...
09/08/1987
 
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