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Class Information
Number: 411/917
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener > Nut having tension feature
Description: Art collection of nut fasteners designed to be attached to the ends of bolts having an opening which is either to correspond to the thread of a bolt or other similar corresponding structure to secure the bolt in place in the material to which it is applied and further wherein a nut fastener is provided with a tension feature.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8353648 Load-bearing ring for hydraulic fasteners Jan. 15, 2013
8328482 Hydraulic foundation bolt tensioner Dec. 11, 2012
8266781 Hydraulic tensioning jacks Sep. 18, 2012
7516582 Automatic take-up device with internal spring Apr. 14, 2009
7509778 Automatic take-up device with internal spring Mar. 31, 2009
7338240 Double nut for the controlled fixing of a component by means of a belt connection Mar. 4, 2008
7207760 Washer and fastener provided with a washer Apr. 24, 2007
7198465 Fastening arrangement for a split casing Apr. 3, 2007
7195439 Tightening member Mar. 27, 2007
7066699 Tensioning apparatus and method Jun. 27, 2006
6883401 Power tool for fastening objects Apr. 26, 2005
6685406 Perforated nut tensioning system Feb. 3, 2004
6682284 Nut having locking mechanism and low operating torque requirement Jan. 27, 2004
6616390 Structural member having a nut with an extended flange Sep. 9, 2003
6554554 Tilt action fastener Apr. 29, 2003
6273659 Locking mechanism for a rotary working member Aug. 14, 2001
6261041 Clamping screw Jul. 17, 2001
6196781 Screw fastener with multiple threaded portions Mar. 6, 2001
6179512 Collet nut Jan. 30, 2001
6112396 Jackbolts for multi jackbolt tensioners Sep. 5, 2000
6050741 Tool clamping device Apr. 18, 2000
5934853 Nut and device for tightening provided with the same Aug. 10, 1999
5927917 Self-torquing nut Jul. 27, 1999
5913647 Fastener tension indicator Jun. 22, 1999
5902084 Combined nut and flange fastener May. 11, 1999
5888041 Lock nut Mar. 30, 1999
5871322 Clamp screw Feb. 16, 1999
5827025 Lug nut disc spring assembly Oct. 27, 1998
5772378 Pre-tensioning device for fastening elements and method for pre-tensioning a fastening element Jun. 30, 1998
5730569 Hydraulically assisted fastener element Mar. 24, 1998
5711581 Wheel opening inserts and lug nut assemblies thereof for mounting vehicle wheels Jan. 27, 1998
5690458 Hydraulic bolt tensioner Nov. 25, 1997
5624219 High-strength bolt and high-strength nut Apr. 29, 1997
5622465 Lock nut Apr. 22, 1997
5577872 Torque enhancing tightening screw Nov. 26, 1996
5567100 Torque enhancing clamping nut Oct. 22, 1996
5553982 Fluid type pusher with thrust indicator Sep. 10, 1996
5542753 Wheel opening inserts and lug nut assemblies thereof for mounting non-ferrous vehicle wheels Aug. 6, 1996
5538379 Mechanical tensioner for and method of elongating and relaxing a stud and the like Jul. 23, 1996
5538379 Mechanical tensioner for and method of elongating and relaxing a stud and the like Jul. 23, 1996
5533863 Self positioning nut Jul. 9, 1996
5529450 Lock nut Jun. 25, 1996
5468106 Hydraulic tensioning device Nov. 21, 1995
5316319 Liveload assembly for maintaining torque on bolts May. 31, 1994
5253967 Adapter assembly for tensioning threaded fasteners and method of tensioning threaded fasteners Oct. 19, 1993
5209623 Wheel stud installation apparatus May. 11, 1993
5152649 Device for setting anchors Oct. 6, 1992
5083889 Structure for preventing escape of jack bolts in apparatus to mechanically stress a bolt-type fastener Jan. 28, 1992
5069587 Securing nut apparatus Dec. 3, 1991
5050415 Method and apparatus for adjusting and changing the height of the plane of passage of the material to be rolled through rolls of rolling stands of a shape rolling mill Sep. 24, 1991

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