Sumitomo Precision Products

Tokyo, Japan

Sumitomo Precision Products

Tokyo, Japan
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Patent
Sumitomo Precision Products | Date: 2017-02-01

This heat exchanger (100) includes a core portion (1), a header portion (2), and an intermediate member (3), and the curvature radius of a corner (31a to 31d) of the intermediate member is configured to be smaller than the curvature radius at a header portion side.


Patent
Sumitomo Precision Products | Date: 2017-01-04

This vibration-type angular rate sensor corrects a sensor output from a secondary-side control circuit (3) by adding, to a closed control loop of the secondary-side control circuit, an offset value based on the output of a closed control loop of a primary-side control circuit (2) dependent on temperature.


Patent
Sumitomo Precision Products | Date: 2017-01-25

A combustor for a fuel cell provided herein is capable of effectively avoiding combustion instability and misfire due to the combustion instability while having a simple structure and capable of being reduced in size easily. To achieve such a combustor, a partially shielding member 22 is disposed in a gas channel 21 a for oxygen-containing gas passing. The partially shielding member 22 partially shields the gas channel 21 a, thereby introducing part of the oxygen-containing gas passing the gas channel 21a into a primary combustion zone 28 formed in the inside area of the partially shielding member 22 while allowing passing of residue of the oxygen-containing gas toward a combustion zone 29 on a downstream side of a gas passing direction relative to the primary combustion zone 28. A porous ceramic body 24 is held in the secondary combustion zone 29. The porous ceramic body 24 is a ceramic foam having excellent heat resistance and excellent gas permeability. The porous ceramic body 24 has an internal channel 24a formed in a central portion thereof and an external channel 24b formed on an outer peripheral side thereof.


Patent
Sumitomo Precision Products | Date: 2017-01-25

A spacer portion (3) of this heat exchanger (100) includes an outer peripheral portion (3a) circumferentially provided along outer peripheral edges of bonded surfaces (1a) of cores (1) and a gap portion (3b and 3c) provided in a partial region of the circumferential outer peripheral portion, and the gap portion is provided at a position where a temperature gradient on the bonded surfaces of the cores is relatively shallow.


Patent
Sumitomo Precision Products | Date: 2017-04-05

A hydraulic cylinder includes: a cylinder tube; a piston; a piston rod; a pair of end covers; and a snubbing mechanism configured to reduce the moving speed of the piston after the piston reaches the vicinity of the end of its stroke. The snubbing mechanism includes: a supply/discharge port formed in an associated one of the end covers; a valve configured to open and close the supply/discharge port; a connector configured to connect the valve and the piston together; and at least one recess extending from the edge of the supply/discharge port. When the piston approaches the end of its stroke, the valve closes the supply/discharge port to form a throttle oil passage, and hydraulic oil is discharged through the throttle oil passage to reduce the moving speed of the piston.


Patent
Sumitomo Precision Products | Date: 2017-03-22

In a fuel cell provided herein, the flow resistance of oxidant gas and that of oxidant off-gas in a cell stack are low to effectively reduce risk of gas leakage and risk of resultant destructive damage. The fuel cell comprises a cell stack 10 configured by stacking an anode plate 12 and a cathode plate 13 alternately while holding a cell 11 between central sections of the anode plate 12 and the cathode plate 13 and holding a cell holder 19 between peripheral sections of the anode plate 12 and the cathode plate 13. A fuel-containing gas intake manifold 10F is formed integrally on one of two sides of the cell stack 10 facing each other. A fuel off-gas exhaust manifold 10G is formed integrally on the other of these two sides. An oxidant gas intake manifold 10H is formed integrally on one of different two sides facing each other. A manifold is not formed on the other of the different two sides to form an exhaust port 15b on a lateral side of the cell stack 10 through which oxidant off-gas is released from a cathode side of the cell 11 in each layer.


Patent
Sumitomo Precision Products | Date: 2016-08-23

A hydraulic cylinder includes: a cylinder tube; a piston; a piston rod; a pair of end covers; and a snubbing mechanism configured to reduce the moving speed of the piston after the piston reaches the vicinity of the end of its stroke. The snubbing mechanism includes: a supply/discharge port formed in an associated one of the end covers; a valve configured to open and close the supply/discharge port; a connector configured to connect the valve and the piston together; and at least one recess extending from the edge of the supply/discharge port. When the piston approaches the end of its stroke, the valve closes the supply/discharge port to form a throttle oil passage, and hydraulic oil is discharged through the throttle oil passage to reduce the moving speed of the piston.


Patent
Sumitomo Precision Products | Date: 2017-06-07

A heat exchanger for an aircraft engine that allows improvement in heat exchange ratio is provided. The heat exchanger (1) includes a plurality of heat dissipating fins (20, 30). The plurality of heat dissipating fins (20, 30) are arranged on at least one of a surface (2) and a surface (3). Each of the heat dissipating fins (20, 30) has a plate-like shape and has an inlet-side upper edge disposed on the side where a swirl flow (AF1) flows in and an outlet-side upper edge disposed on the side opposite the inlet-side upper edge and on the side where the swirl flow (AF1) flows out, and the inlet-side upper edge intersects the axis of rotation of a fan and extends along the direction in which the swirl flow (AF1) flows at the inlet-side upper edge.


Patent
Sumitomo Precision Products | Date: 2017-09-13

The heat exchanger is equipped with a heat transfer member (10, 20) including a flow port (11, 12, 21, 22) for receiving or discharging a fluid (6, 7), a plurality of heat exchange passages (13, 23), and a connection passage part (14, 24) having both ends, one of the ends being connected to the flow port and the other thereof being connected to the plurality of heat exchange passages (13, 23). The connection passage part has a tournament shape branched into two by two as it advances toward the heat exchange passages.


Patent
Sumitomo Precision Products | Date: 2016-09-14

A mirror device 300 disclosed herein includes: a base 302; a mirror 305; an actuator 306; an extension 304 provided on the other side of the mirror 305 with respect to an X-axis opposite from the actuator 306; a fixed comb electrode 308; and a movable comb electrode 307 provided on the other side of the mirror 305 with respect to the X-axis opposite from the actuator 306. The movable comb electrode 307 includes: a beam portion 371 coupled to the mirror 305 via a hinge 373; and electrode fingers 372 provided for the beam portion 371. The extension 304 is coupled to the base 302 via a hinge 341, and the mirror 305 tilts around a principal axis passing through the hinge 341.

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