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Class 74/89.42 - Backlash


Subclass of Class 74 - Machine element or mechanism
Definition: Subject matter related to reduction or mitigation of play
No. of applications: 15
Last issue date: 12/17/2009


Application No.Application TitleIssue Date
20090308189STEERING DEVICE
Provided are a steering device and a feed screw mechanism. The steering device is made so easy in the adjusting work of a backlash that it can eliminate the backlash reliably, even if the precision of the thread of a feed thread shaft or a feed nut is poor, thereby to i...
12/17/2009
20090145252Anti-Backlash Nut, Lead Screw Assembly And Method
A nut for a lead screw assembly, a lead screw assembly and a method for preventing backlash in a lead screw assembly are provided. The nut of the lead screw assembly includes a one-way clutch that permits relative motion of between two nut bodies in a first direction bu...
06/11/2009
20080115605Motor assembly with anti-backlash nut and thermal insensitive mechanism
A motorized anti-backlash linear actuator comprises a motor; a hollow shaft that is rotated about a central axis by the motor, an anti-backlash nut that is nested at least partially inside the hollow shaft; and an externally threaded rod or lead screw that engages with ...
05/22/2008
20080022794Long-span lead screw assembly with anti-backlash nut
A lead screw assembly having a lead screw rotatable within a hollow tubular portion of a reinforcing rail. A nut engages with threads of the lead screw and is movable along the reinforcing rail. The lead screw includes plurality of first threaded portions having an oute...
01/31/2008
20070295128Lead screw actuator with torsional anti-backlash nut
A linear actuator assembly, such as a rod or piston-type linear actuator, comprising a rotating lead screw with external threads; and a nut assembly with threads engageable with the external threads of the lead screw; and a guide tube having a hollow interior portion wi...
12/27/2007
20070227280FIXED TORQUE PRELOAD PIECE
A fixed torque preload piece is positioned between two nuts of a ball screw, the preload piece is formed with through hole located in an axial direction of the two nuts for receiving at least two steel balls. Two terminal openings of each of the through holes are define...
10/04/2007
20070068292Preload adjusting device for a ball screw
A preload adjusting device for a ball screw is disposed between screw nuts of a ball screw and comprises: two preload pieces each formed at a side thereof with a slant surface. The two preload pieces are mounted between the screw nuts in such a manner that the slant sur...
03/29/2007
20070012127Anti-backlash nut assembly for a lead screw
In a preferred embodiment, a system, including: an anti-backlash nut having a tapered surface at one end thereof; a drive nut having a complementary tapered surface engaging the tapered surface on the anti-backlash nut; and biasing means urging the tapered surfaces toge...
01/18/2007
20060207360Actuating device for a motor vehicle transmission, motor vehicle transmission unit having an actuating device of this type, motor vehicle drivetrain having a motor vehicle transmission unit of this type, and method for reducing or avoiding control errors due to mass inertia in the control of gear change actions in a motor vehicle transmission
An actuating device for a motor vehicle transmission having multiple transmission steps, having a threaded spindle which is mounted so it is rotationally movable and axially fixed and a spindle nut which is positioned on this threaded spindle and may be driven thereby, ...
09/21/2006
20060037421Two-part, low-backlash spindle nut
Apparatus for screw transmission on a spindle comprising a nut having at least a first and second part with internal threads, at least one bore in the first and second parts, and at least one spring located within the at least one bore of the first and second parts and ...
02/23/2006
20050252323Moving body and actuating device having the same
The moving body of an actuating device is capable of automatically and rapidly eliminating clearances between nuts and a leadscrew. The moving body comprises: a first nut screwed with the leadscrew; a second nut screwed with the leadscrew and engaged with the first nut,...
11/17/2005
20050241420Gearbox drive unit with an inclined stop surface
The invention relates to a gear drive unit (10), in particular to adjust moveable parts in a motor vehicle, with a gear housing (15) and a shaft (18) positioned therein along a longitudinal axis (30), which shaft is supported on the housing (...
11/03/2005
20050223830Structure of guide spring sheet for traverse
A structure of a guide spring sheet for a traverse is used to combine to one side of a main body of a driving guide teeth for a traverse; it comprises a sheet body at the top end of an elastic sheet, bent to a direction and used for propping against the rear side of a t...
10/13/2005
20050178225Long-span lead screw assembly with anti-backlash nut
A lead screw assembly having a lead screw rotatable within a hollow tubular portion of a reinforcing rail. A nut engages with threads of the lead screw and is movable along the reinforcing rail. The lead screw includes plurality of first threaded portions having an oute...
08/18/2005
20050016305Use of an electrified pin to detect load transfer to a secondary nut in a screw actuator
The invention relates to an actuator for actuating a moving member, said actuator essentially comprising a screw and at least two nuts engaged on the screw, relative movement between the screw and the nuts generating said actuation, said actuator further comprising a pi...
01/27/2005
 
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