Patents Represented by Attorney C. Bruce Hamburg
  • Patent number: 4909776
    Abstract: One of bolt section or a nut section on a ball screw devices, or nut sections (for example) are connected to gear sections axially movable, while the bolt sections are connected to a stationary element, so that relative rotation is given to the bolt section and the nut section to adjust movable sheaves. Between another of the bolt section or the nut section on the ball screw devices, or the bolt sections (for example) and the stationary element, adjustable retainers are installed without axial move being allowed, and holding apparatus to hold the retainers at required position is installed with the retainers. Due to the above, initial tension and position of the belt are adjusted and determined by varying the nut sections in axial direction for the bolt sections. It is possible to perform this adjustment after the assembly is completed.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: March 20, 1990
    Assignee: Aisin AW Co., Ltd.
    Inventors: Shiro Sakakibara, Masahiro Hasebe, Masashi Hattori, Shigekazu Ohara
  • Patent number: 4862768
    Abstract: Provided is a power transmission device for four-wheel drive vehicles of both the full-time type and part-time types, wherein a wet multiple-disc clutch is mounted in a ring gear covering the front-wheel differential gear and arranged coaxially with the differential gear. The wet multiple-disc type clutch is engaged by means of a hydraulic actuator in which a plurality of pistons are arranged in series. Hydraulic pressure is fed into oil chambers formed by the pistons through individual or common oil passages. The wet multiple-clutch constitutes a differential motion limiting device for stopping or limiting the differential motion of a center differential gear for the full-time four wheel drive, or constitutes a rear wheel drive switching unit for engaging and disengaging the power transmission between the ring gear mount casing and the transfer unit.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: September 5, 1989
    Assignee: Aisin-Warner Kabushiki Kaisha
    Inventors: Tatsuya Iwatsuki, Mutsumi Kawamoto, Takenori Kano
  • Patent number: 4861046
    Abstract: A steel laminate gasket of the invention is used for an internal combustion engine having at least one hole therein. The gasket comprises a first plate having at least one first hole and a first bead situated adjacent to the first hole to surround the same, and a second plate having at least one second hole and at least one second bead situated adjacent to the second hole to surround the same. The distance from the second hole to the second bead is different from that from the first hole to the first bead. When the first and second plates are assembled together, the first and second beads face against the second and first plates, respectively. When the gasket is tightened, the first and second beads form a plurality of corrugated beads at selected areas around the hole to securely seal the same.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: August 29, 1989
    Assignee: Ishikawa Gasket Co., Ltd.
    Inventor: Tsunekazu Udagawa
  • Patent number: 4843046
    Abstract: Disclosed herein is a ceramic composition of high dielectric constant which comprises the major constituents of PbO, La.sub.2 O.sub.3, MO, ZrO.sub.2, and TiO.sub.2 in the ratio defined by the formula below.(1-x-y)PbO.multidot.x/2La.sub.2 O.sub.3 .multidot.yMo.multidot.(1-z)ZrO.sub.2 .multidot.zTiO.sub.2where,M represents Ba and/or Sr;0.06.ltoreq.x.ltoreq.0.300.03.ltoreq.y.ltoreq.0.480.20.ltoreq.z.ltoreq.0.50and an additive represented by PbWo.sub.4 and/or Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3 in an amount of 1-40 wt % (in total) based on the above-mentioned major constituents (provided that the amount of PbWO.sub.4 is less than 15 wt % of the amount of the major constituents and the amount of Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3 is less than 40 wt % of the amount of the major constituents). Less than 5 mol % of all Pb in the composition may be replaced by Ag and/or less than 6 mol % of all Pb in the composition may be replaced by Bi.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: June 27, 1989
    Assignee: Mitsubishi Mining and Cement Co., Ltd.
    Inventors: Takashi Yamaguchi, Takeshi Inoue, Masashi Saito
  • Patent number: 4840241
    Abstract: A coin scale for measuring weight of a mailing material comprises a scale section and a base section situated under the scale section. The scale section includes an elongated arm, a coin receiving member formed at one end of the arm, a mail receiving member formed at the other end of the arm, and a first supporting device situated between the coin receiving member and the mail receiving member. The first supporting device is provided with a plurality of supporting points. The base section include a stand and a second supporting device formed on the stand. The second supporting device rotatably engages one of the supporting points and supports the arm as a fulcrum of a balance. In at least one supporting point, weight at the mail receiving member increases step by step corresponding to the particular weight zone of a mailing material as one coin is added in the coin receiving member.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: June 20, 1989
    Inventor: Takeshi Ishikawa
  • Patent number: 4840092
    Abstract: A selecting valve is provided, which is switched by different signals sent out when the vehicle is stopped or when the vehicle is to start to move. The selecting valve is connected to a hydraulic servo unit for a forward clutch which is engaged to transmit torque when the vehicle is to move forward, and is supplied with line pressure and a control pressure provided by an electronically operated regulating valve, such as an electronically controlled throttle valve. The regulated control pressure from the electronically operated regulating valve is supplied to the hydraulic servo unit for the forward clutch when the vehicle is stopped, while line pressure is supplied when the vehicle is to move, thus preventing creeping and shift shock at starts. Since the selecting valve is provided with a port leading to the hydraulic servo unit for a brake which restricts vehicle movement, the brake can be applied when the vehicle is stopped and released when moved, thus providing hill-holding capability.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: June 20, 1989
    Assignees: Aisin-Warner Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshikazu Sakaguchi, Yutaka Taga, Yuji Kashihara
  • Patent number: 4840778
    Abstract: Novel primarily chain inorganic polysilazanes of average molecular weight of 690 to 2000 are prepared from novel adducts of a halosilane and a base by reacting the adducts with ammonia in unreactive solvents. Silicon nitride is prepared by heating the polysilazanes at 1000.degree. to 1600.degree. C., preferably below 1300.degree. C., most preferably 1000.degree. to 1100.degree. C.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: June 20, 1989
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Mikiro Arai, Takeshi Isoda, Takuji Itoh
  • Patent number: 4838518
    Abstract: A pressure control valve includes pressure modulating section and a magnetic section. The magnetic section has a cylindrical case, a coil assembly, a cylindrical core, a rod and a plunger. The plunger is made of thick magnetic material. At the center of the plunger, a cylindrical concave whose diameter is slightly larger than that of the cylindrical core is provided. The end of the cylindrical core composes an extrusion by extending from the coil assembly. A magnetic attractive section made up by the cylindrical concave of the plunger and the extrusion of the cylindrical core both of which are located vis-a-vis each other, and is located away from the pressure modulating section. Due to the above, when operation the plunger is efficiently magnetized and attracted to the extrusion of the core. And even if fluid leaks from the pressure modulating section, it is difficult for the fluid to reach the magnetic attractive section.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: June 13, 1989
    Assignee: Aisin An Co., Ltd.
    Inventors: Kouji Kobayashi, Akira Suzuki, Nobuaki Miki
  • Patent number: 4838844
    Abstract: An endless transmission belt is formed of a plurality of symmetrical V blocks. Each V block comprises upper and lower portions disposed approximately parallel to each other, and two pillar portions connecting the upper and lower portions. The block includes side openings on both sides, and a center opening between the pillar portions. The upper and lower portions have wavy configurations, so that the upper and lower portions have flexibility against the force applied from sheaves to the V block.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: June 13, 1989
    Assignee: Aisin-Warner Kabushiki Kaisha
    Inventors: Shiro Sakakibara, Yoshinori Miyaishi, Takashi Furuya
  • Patent number: 4838313
    Abstract: In a solenoid-operated pressure control valve having a pressure modulating section and a magnetic section, the pressure modulating section includes a valve sleeve having an application port, an output port, a feedback port having throttle passage, and a drain port, and a spool being movable in the valve sleeve; and the magnetic section includes a coil assembly and a rod. According to the above structure a force developed from the magnetic section, a force developed by a spring and an output pressure feedback force are applied and balanced, so that an application pressure is so modulated that the application pressure is taken out as an output pressure corresponding to input electric level to the magnetic section.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: June 13, 1989
    Assignee: Aisin AW Co., Ltd.
    Inventors: Kouji Kobayashi, Nobuaki Miki, Akira Suzuki
  • Patent number: 4838517
    Abstract: A pressure control valve includes pressure modulating section and a magnetic section. The magnetic section has a cylindrical case, a coil assembly, a cylindrical core, a rod and a plunger. Outer limbs of a disc type supporting members which are made of a leaf spring member are fixed to both ends of the cylindrical core, and both ends of the rod are suspended at the center of the disc type supporting members, so that the rod is supported by the disc type supporting members. Due to the above when operation, the move of the rod is performed smoothly by the supporting structure of the disc type supporting member, and the supporting member moves according to the move of the rod, so that such move of the rod brings about no volume change in the magnetic section.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: June 13, 1989
    Assignee: Aisin Aw Co., Ltd.
    Inventors: Nobuaki Miki, Akira Suzuki, Kouji Kobayashi
  • Patent number: 4837995
    Abstract: An anchoring device for prestressed concrete. The anchor is made of an outer member which has an inner hole with a cone shaped surface and an inner member which is made up of a plurality of wedges having at least one hole for holding a tension member. Both the inner member and the outer member are made by alternately superposing cloths of glass fibers and carbon fibers; impregnating the cloths with a resin and curing the resin.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: June 13, 1989
    Assignees: Mitsubishi Mining and Cement Co., Ltd., Kimpo Electronics Co., Ltd.
    Inventors: Hitoshi Omizono, Hiroshi Sasaki, Yasuo Fukatsu, Saburo Ota, Yoshio Ueda
  • Patent number: 4834399
    Abstract: A steel laminate gasket of the invention to be used for an internal combustion engine comprises a first plate and a second plate situated adjacent to the first plate. The first plate is provided with a first base section, first and second openings formed in the first base section and a first sealing structure integrally formed with the first base section around the first opening. The second plate is provided with a second base section placed over the first base section, a third opening formed in the second base section to be situated around the first opening, a fourth opening formed in the second base section, and a second sealing structure integrally formed with the second base section around the fourth opening. When the first and second plates are assembled, the first and second sealing structures do not lay over the second and first plates respectively and seal around holes of the engine.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: May 30, 1989
    Assignee: Ishikawa Gasket Co., Ltd.
    Inventors: Tsunekazu Udagawa, Susumu Inamura
  • Patent number: 4834881
    Abstract: A spiral wound type membrane module for a water treating apparatus comprising:a water collection pipe having a hollow inside so as to form a water passage in which openings for communicating the hollow inside with the outside are perforated through the pipe walls;a separation membrane and a spacer wound around for several turns while being overlaid with each other to the outer circumferential surface of the water collection pipe, in which the separation membrane and the spacer are wound around such that the spacer is disposed between each of the layers of the separation membrane and, therefore, a channel for raw water to be processed and a channel for processed water after permeated through the separation membrane are alternately laminated between each of layers of the separation membrane; whereinthe spacer constituting the channel for the water to be processed has corrugating ridges extended in the axial direction of the water collection pipe and the corrugating ridges are extended in a zig-zag manner or, in
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: May 30, 1989
    Assignee: Kurita Water Industries Ltd.
    Inventors: Shigeki Sawada, Masaaki Shishido
  • Patent number: 4833739
    Abstract: A steam sauna has a passage for circulation of air existing in a sauna booth, and is provided with a heater for heating air flowing through the passage, and a steam generator with an ultrasonic oscillator for mixing steam generated with the air heated.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: May 30, 1989
    Assignee: INAX Corporation
    Inventors: Shigeru Sakakibara, Ryuici Kawamoto
  • Patent number: 4834427
    Abstract: There is disclosed an achoring device for use with a seat belt worn in a vehicle. The device is light in weight and compact, since it has a lightweight slide anchor. The device further includes a slip anchor whose height can be adjusted within a range much broader than conventional. The slide anchor (19) is mounted to a rail member (11), which is rigidly fixed to a stationary portion of the body of the vehicle and extends vertically, in such a way that the height of the anchor (19) can be adjusted longitudinally of the rail member. An anchor bolt (25) protruding inwardly of the passenger's compartment is rigidly fixed to the anchor (19). The seat belt (80) has its central portion supported by a slip anchor (23) that is rotatably held to the bolt (25). A retaining pin (27) is removably inserted in a hole (26) extending through the bolt (25). Holes (12) are formed longitudinally of the rail member (11) opposite to the front end of the pin (27 ).
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: May 30, 1989
    Assignee: Takata Corporation
    Inventor: Juichiro Takada
  • Patent number: 4830927
    Abstract: An anti-seismic bearing made up of a plurality of rigid plates and viscoelastic flexible plates laminated alternately, said flexible plates being made of a material characterized by that the hysteresis ratio at 100% deformation at 25.degree. C. is 0.15 to 0.60, the loss tangent (tan .delta.) at 0.01% deformation, 5 Hz, at 25.degree. C. is 0.010 to 0.194, and the ratio E(-10)/E(30) is 1.0 to 3.0, where E(-10) is a storage modulus at 0.01% deformation 5 Hz, at -10.degree. C. and E(30) is a storage modulus at 0.01% deformation, 5 Hz, at 30.degree. C.An assembly composed of low-damping anti-seismic bearings and high-damping anti-seismic bearings arranged in parallel such that the anti-seismic bearings support the vertical load and undergo elastic deformation in the horizontal direction.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: May 16, 1989
    Assignee: Bridgestone Corporation
    Inventors: Yoshihide Fukahori, Hiromu Kojima, Akihiko Ogino
  • Patent number: 4829853
    Abstract: Under idle condition of a vehicle, control valve 90 is "left half position", line pressure modulated by throttle valve 41 is applied to clutch hydraulic servo C.sub.1 through ports .delta., .mu.; and the clutch is held just under connection, line pressure is applied to brake hydraulic servo B.sub.1 through shift valve 52 being under low speed condition;in case of high speed running, shift valve 52 is "left half position", so that line pressure is not applied to brake hydraulic servo B.sub.1 ;when a vehicle starting, control valve 90 becomes "right half position", then, line pressure is applied to clutch hydraulic servo C.sub.1 through ports .alpha., .mu. and port .beta. is drained;in case of high speed coasting, control valve becomes "left half position", line presure is not applied to clutch hydraulic servo C.sub.1 ;in case of speed higher than certain level, if a manual valve being shifted to R range, control valve 90 becomes "left half position" and ports .epsilon., .eta.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: May 16, 1989
    Assignee: Aisin-Warner Kabushiki Kaisha
    Inventor: Yoshikazu Sakaguchi
  • Patent number: 4828275
    Abstract: A gasket comprises a main body having at least one opening and a plurality of elastic members provided on at least one of upper and lower surfaces of the main body. The elastic members project outwardly from the upper or lower surface. The characteristics of at least one of the elastic members are different from those of the others. The elastic members surround the opening so that when the gasket is compressed between two parts, the elastic members deform to thereby securely seal around the opening.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: May 9, 1989
    Assignee: Ishikawa Gasket Co., Ltd.
    Inventor: Tsunekazu Udagawa
  • Patent number: 4826708
    Abstract: A method of manufacturing a steel plate for a steel laminate gasket comprises applying a first seal coating consecutively on at least one side of a base plate in the shape substantially the same as that of an actual steel plate for constituting the gasket. After the first seal coating on the base plate is dried, the base plate is pressed or cut to form a plurality of steel plates. Each steel plate has a configuration as in the actual steel plate, an outer surface formed by the first seal coating on the entire one side thereof and a plurality of holes therein. When a steel laminate gasket is formed, the steel plate with the seal coating thereon is stacked with other steel plates so that the seal coating is located between the two steel plates.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: May 2, 1989
    Assignee: Ishikawa Gasket Co., Ltd.
    Inventor: Tsunekazu Udagawa