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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Niwa; Hiroshi
Address:
Tokyo, JP
No. of patents:
13
Patents:












Patent Number Title Of Patent Date Issued
8282282 Motion guide device and method of assembling motion guide device October 9, 2012
A motion guide device is able to damp a moving block from vibrating in a direction perpendicular to an axis of a raceway rail. A damping plate with a surface facing a surface of a raceway is provided at a moving block body. The surface of the damping plate is set to be in contact with
8273013 Endoscope insertion assistant probe and applicable endoscope apparatus therefor September 25, 2012
An endoscope insertion assistant probe is inserted into a body cavity prior to insertion of an insertion portion of an endoscope into the body cavity, to assist the insertion of the endoscope, and includes a flexible, elongated probe; and a distal end guiding element that is arranged
8272289 Roller screw September 25, 2012
A roller screw is provided having a structure suitable for circulating rollers. The roller screw has a screw shaft 5 with a spiral roller rolling groove 5a formed on an outer peripheral surface thereof; a nut 6 with a spiral roller rolling groove 6a opposed to the roller rolling groo
8132479 Screw device and method of manufacturing the same March 13, 2012
Provided is a screw device capable of preventing occurrence of any elevation change at a joint between a ball return path of a circulation member and a loaded ball rolling groove of a nut. The circulation member 12 has end parts 14 and 15 each of which the periphery includes a rolling
8033195 Low-noise screw device October 11, 2011
Provided is a screw device capable of reducing noise generated therefrom. The screw device has a screw shaft 5 having a rolling-element rolling groove 5a spirally formed on an outer peripheral surface of the screw shaft; a nut 6 having a loaded rolling-element rolling groove 6a spirally
7870806 Ball screw device January 18, 2011
The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is provided with a projec
7648458 Insertion shape detecting probe January 19, 2010
An insertion shape detecting probe includes shape detecting elements for generating or detecting magnetic field or magnetic; signal lines connected to the shape detecting elements; supporting members that support the shape detecting elements; inner sheaths into which the signal lines
7350434 Ball screw device April 1, 2008
The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is provided with a projec
6616335 Rolling element spacer in rolling guide device September 9, 2003
There is provided a rolling element spacer used in a rolling guide device having an endless circulation passage of balls, arranged alternately with many balls in the endless circulation passage, and circulating together with the balls in the endless circulation passage. It has a pair of
6571653 Ball screw June 3, 2003
Lubricant retaining slits (5) are formed on a pair of seal members (2) from end surfaces (2b) thereof facing inside in the axial direction of a nut (1) of a ball screw to intermediate portions of the seal members (2), and foreign bodies removing slits (6) are formed on the seal members (
6513978 Rolling element spacers for rolling guide units February 4, 2003
The present invention provides rolling element spacers used in a rolling guide unit provided with an endless circulating passage for balls; arranged with plural balls alternately therewith in the endless circulating passage; and circulated with these balls in the endless circulating
6333848 Storage device with vibration reduction unit December 25, 2001
The storage device reduces vibration accompanied by high-speed rotation of a storage media, and raises reliability as well. In a stationary position of amass object, each magnetic pole of the movable portion magnet is disposed so that their position is provided in opposite relation to ea
5896961 Dynamic vibration absorber April 27, 1999
A dynamic vibration absorber comprises a movable portion including a movable weight portion, a movable portion magnet assembly provided with a movable inside magnet and a movable outside magnet which are mounted to the movable weight portion through a yoke so as to alternately provide










 
 
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