Seiko Instruments Inc

Seiko Instruments & Electronics Ltd.

Sii Micro Parts Ltd.

Yutaka Makishima

Hideharu Onodera

Hironobu Itoh

Masahide Nagai

Kazutoshi Yokose

Minoru Noda

Toshimi Shioda

Masatoshi Higake

Kazutaka Yuzurihara

Junji Teraya

Naoki Nemoto

A working fluid injection apparatus has an upper chamber that stores a working fluid and a lower chamber that removably receives a bearing unit having a housing and a shaft that is inserted in the housing to form between the shaft and the housing a gap into which the working fluid is to be injected. A partition divides the upper chamber and the lower chamber into top and bottom parts, respectively. A first exhaust system brings the inside of the upper chamber to a decompressed state. A second exhaust system brings the inside of the lower chamber to a decompressed state. A valve unit opens and closes an internal cavity of the lower chamber relative to an external environment. A tapered hole is formed in the partition and communicates the upper and lower chambers to one another. A tapered shaft is inserted into the tapered hole from the upper chamber. A shaft drive unit moves the tapered shaft in the axial direction in the tapered hole.

Working fluid injection apparatus, method of injecting working fluid, and method of manufacturing fluid dynamic pressure bearing

An electrochemical cell has a container housing a separator and a pair of electrodes impregnated with an electrolyte. The container has a base member having a bottom part and a side part disposed on a top surface of the bottom part along an outer rim of the bottom part. A metallic conductive terminal has first and second opposite surfaces penetrating through inner and outer sides of the base member. The first surface of the conductive terminal is disposed on the top surface of the bottom part of the base member. The second surface of the conductive terminal is disposed in contact with one of the pair of the electrodes. A metallic frame member has first and second opposite surfaces, with the first surface being joined to an entire rim of a top surface of the side part of the base member. A metallic cover member is joined to an entire rim of the second surface of the frame member.

Electrochemical cell and fabrication method of the same

A package for a communication device has a base member having a first end, a second end opposite the first end, and an interior space disposed between the first and second ends for accommodating a communication device. A conductive terminal extends through the base member from the interior space and to the exterior of the base member. A frame member is connected to the base member and has a peripheral portion protruding from the first end of the base member. A cover member is connected to the protruding peripheral portion of the frame member.

Packages for communication devices

A driving apparatus for effecting linear movement of an industrial robot comprises a slide member axially slidably disposed within a frame, a ball nut secured to the slide member and a ball screw threaded through the ball nut and rotationally driven relative to the ball nut to effect linear movement of the ball nut along the ball screw accompanied by linear movement of the slide shaft. A bracket is adjustably mounted on the frame for rotatably supporting the shaft of the ball screw. The bracket can be displaced relative to the frame in the transverse direction of the slide member to align the axis of the ball screw with the axis of the slide member during assembly of the apparatus. A thrust bearing is disposed between the shaft of the ball screw and the bracket to absorb radial displacement and strain of the ball screw shaft.

Driving apparatus for industrial robot

A support mechanism for a cylindrical coordinate type industrial robot comprising a stationary upstanding tubular outer member and a displaceable inner member supported within the outer member to undergo axial displacement in upward and downward directions and angular displacement in clockwise and counterclockwise directions. The supporting mechanism includes a bearing interposed between the inner and outer members, the bearing including a retaining member rollably retaining thereon a plurality of rollable elements. An elastic balancing and restoring device for applying elastic biasing forces in opposite axial directions to the upper and lower ends of the retainer member is operative in the event the retainer member fails to maintain proportionate displacement with the inner member to temporarily increase the magnitude of the force difference between the oppositely directed elastic biasing forces in a direction effective to restore the proportionate displacement.

Growing community of inventors

Chiba, Japan

Yutaka Makishima