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Class Information
Number: 74/89.42
Name: Machine element or mechanism > Mechanical movements > Reciprocating or oscillating to or from alternating rotary > Including screw and nut > Backlash
Description:


Patents under this class:
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Patent Number Title Of Patent Date Issued
7587954 Ball screw Sep. 15, 2009
7568993 Planetary gear train Aug. 4, 2009
7562596 Fixed torque preload piece Jul. 21, 2009
7552657 Long-span lead screw assembly with anti-backlash nut Jun. 30, 2009
7536928 Ball screw May. 26, 2009
7506557 Anti-backlash nut Mar. 24, 2009
7474176 Sliding screw arrangement Jan. 6, 2009
7458292 Catch nut Dec. 2, 2008
7444894 Linear actuator with wear-resistant ceramic bushing Nov. 4, 2008
7337688 Two-part, low-backlash spindle nut Mar. 4, 2008
7219570 Long-span lead screw assembly with anti-backlash nut May. 22, 2007
7047783 Auxiliary adjusting device for rolling mill stand May. 23, 2006
7017437 Ball screw Mar. 28, 2006
6991414 Fastener assembly Jan. 31, 2006
6968753 Vibration-dampening base for ball-type lead screw of load port transfer system Nov. 29, 2005
6931960 Leadscrew mechanical drive with differential leadscrew follower structure Aug. 23, 2005
6914754 Head feeding mechanism Jul. 5, 2005
6883396 Wire-wound leadscrew assembly with a preloaded leadscrew wire nut, and its fabrication Apr. 26, 2005
6827310 Apparatus and method for fin actuation in a portable missile Dec. 7, 2004
6698301 Screw drive with rolling elements, and method of assembly Mar. 2, 2004
6685382 Screw actuator Feb. 3, 2004
6564660 Ball screw feed mechanism May. 20, 2003
6520038 Drive device, for a movable part, in particular a hinged side window of a vehicle Feb. 18, 2003
6516680 Power steering apparatus Feb. 11, 2003
6499369 Rack ball nut interface Dec. 31, 2002
6422101 Reinforced lead screw with springless anti-backlash nut Jul. 23, 2002
6415673 Reinforced lead screw with anti-backlash nut Jul. 9, 2002
6349606 Reduced backlash translating system Feb. 26, 2002
6318204 Helical gear Nov. 20, 2001
6311576 Anti-backlash nut for lead screw Nov. 6, 2001
6311575 Device for connecting together a ball nut and moving member Nov. 6, 2001
6267021 Anti-backlash device for a motorized optical component positioning stage Jul. 31, 2001
6202500 Reinforced lead screw with anti-backlash nut Mar. 20, 2001
6142032 Adjustable anti-backlash nut assembly Nov. 7, 2000
6131478 Anti-backlash nut assembly Oct. 17, 2000
6119541 Methods for adjusting a lead screw nut and a nut for adjustably engaging a lead screw Sep. 19, 2000
6085605 Actuator for linear movement Jul. 11, 2000
6053065 Spindle drive Apr. 25, 2000
5911789 Linear actuator for motor vehicle steering column Jun. 15, 1999
5839321 Backlash compensating assembly Nov. 24, 1998
5732596 Anti-backlash nut assembly Mar. 31, 1998
5697252 Preliminary thrusting mechanism for a screw device Dec. 16, 1997
5676019 Nut assembly using partial nuts to limit harmonic error Oct. 14, 1997
5644951 Feed screw apparatus and precise positioning and fine feed system Jul. 8, 1997
5634373 Rotational to linear movement actuator with limiter Jun. 3, 1997
5582072 Preliminary thrusting mechanism for a screw device Dec. 10, 1996
5511438 Positioner Apr. 30, 1996
5501118 Ball nut and screw assembly with preload retaining ball return tube clamp Mar. 26, 1996
5492030 Methods of making ball nuts for preloaded ball nut and screw assemblies Feb. 20, 1996
5448438 Head actuator having spring loaded split nut Sep. 5, 1995

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