Patents Examined by D. Austin Bonderer
  • Patent number: 6325358
    Abstract: A gate valve is provided for granular or other dry materials which reduces the tendency of the valve to clog or jam during closing. The valve includes a slide having an arcuate-shaped forward end and a flared passageway to insure proper closing. The preferred form of the invention is made of durable plastic although other materials may also be employed.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: December 4, 2001
    Inventor: John C. Bower
  • Patent number: 6308933
    Abstract: A shut-off valve has a housing which is provided with a spindle bush. Located in the spindle bush is a movable spindle which is sealed with respect to the housing. The spindle is connected to a closure body disposed in the housing. The housing also has a recess, which extends around the spindle bush and is open to the interior of the housing. If the housing comes under internal pressure, the recess prevents corresponding deformation of the spindle bush. The latter can thus not become leaky under the action of the internal pressure.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: October 30, 2001
    Assignee: ASV St├╝bbe GmbH & Co. KG
    Inventor: Karl-Horst Rasche
  • Patent number: 6305662
    Abstract: A valve system (10) includes a piezoelectric transducer (44) mounted on its housing (16). To change the valve's state, a microcontroller (54) causes a valve driver (58) to drive current through the actuator's coil (12) at a relatively high level. It continues driving current through the coil (12) at the high level until the transducer's output reaches a magnitude characteristic of the disturbance that typically results when the actuator's armature (22) reaches the end of its travel. At that point, the microcontroller (54) reduces coil drive.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: October 23, 2001
    Assignee: Arichell Technologies, Inc.
    Inventors: Natan E. Parsons, Xiaoxiong Mo
  • Patent number: 6302371
    Abstract: An electromagnetically actuatable valve includes a core and an armature, each having a respective end face. The end faces are aligned and opposing. One of the end faces has a spherically-curved contour, and the other of the end faces defines a conical surface with respect to a longitudinal axis of the valve. At least one of the end faces may include a wear-resistant coating. At least one of the end faces may be surface-hardened.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: October 16, 2001
    Assignee: Robert Bosch GmbH
    Inventor: Ferdinand Reiter
  • Patent number: 6299129
    Abstract: In a device wherein a rotary shaft is provided in a pipe through which a fluid is passed, a butterfly valve is installed in the pipe, an actuator and an angle sensor are directly arranged on the outer end of the pipe of the rotary shaft, and angle control for adjusting an angle detection signal to a command value is performed to thereby adjust an amount of a fluid passing through the pipe. An actuator includes a rotor composed of a permanent magnet rotatably supported by the rotary shaft and has two magnetic poles, namely, N and S poles, and a stator composed of a winding wrapped around a cylindrical core formed of a soft magnetic member.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: October 9, 2001
    Assignee: Minebea Co., Ltd.
    Inventors: Yuzuru Suzuki, Sakae Fujitani, Naoyuki Harada
  • Patent number: 6296226
    Abstract: A fluid metering apparatus includes a gas inlet, a first regulator in fluid communication with the gas inlet and configured to emit the gas at a first gas pressure, and a second regulator in fluid communication with the gas inlet and configured to emit the gas at a second gas pressure. A first valve is in fluid communication with the first regulator and a second valve is in fluid communication with the second regulator. A switch mechanism has two actuators which, when separately actuated, causes either the first valve to be open and the second valve to be closed or the first valve to be closed and the second valve to be open. The apparatus further includes a fluid pressure regulating device having a fluid inlet port which receives a fluid at a fluid inlet pressure, a gas inlet port and a fluid outlet port.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: October 2, 2001
    Assignee: SpeedFam-IPEC Corporation
    Inventor: Gregory A. Olsen
  • Patent number: 6283441
    Abstract: A pilot actuated spool valve assembly includes a valve body that defines a first passage, a second passage and a flow passage. A unitary pilot body is at least partially positioned in the valve body and has a first valve seat and a second valve seat. A pilot member is moveable in the pilot body between an up position in which the pilot member closes the first valve seat and a down position in which the pilot member closes the second valve seat. A spool valve member has a control hydraulic surface and is positioned in the valve body. It is moveable between a first position in which the first passage is open to the flow passage, and a second position in which the second passage is open to the flow passage. At least one of the valve body, the pilot body, the pilot member and the spool valve member define a control volume fluidly connected to the first passage when the pilot member is in one of its up position and its down position.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: September 4, 2001
    Assignee: Caterpillar Inc.
    Inventor: Steven Y. Tian
  • Patent number: 6283448
    Abstract: An offset butterfly valve with a valve body, air flow conduit extending there through, and an offset rotatably mounted valve plate. The air flow conduit has with no interruptions to impede air flow there through. Cross sections along any location of the conduit are essentially round and of equal diameter while the valve plate is the shape of an oblique cross section of the conduit and rotatably mounted therein. The valve plate axis of rotation is offset with respect to the center of the valve plate and further offset with respect to a center of the conduit. Rotation of the valve plate within the conduit is accomplished by providing two opposing indentations on the interior of the conduit which accommodate the maximum diameter dimension of the valve plate when the valve plate is rotated to an open position. The indentations do not interrupt air flow through the conduit or the sealing of the valve plate periphery which may be easily machined to seal with a sealing surface of the interior of the conduit.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: September 4, 2001
    Inventor: Daniel Webster Denton
  • Patent number: 6276660
    Abstract: A pair of rotary pistons each have a drive shaft connectable therewith through respective one-way mechanisms. Each of the clutch mechanisms has a wrapped spring member surrounding the shaft and a linearly moveable piston to effect an operative connection between the wrapped spring and the shaft. Each linearly moveable piston controls fluid flow to one of the rotary pistons such that the linearly moveable piston will enforce actuation of the wrapped spring prior to the introduction of fluid pressure at the respective rotary piston.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: August 21, 2001
    Assignee: General Motors Corporation
    Inventor: Scott Henry Wittkopp
  • Patent number: 6250600
    Abstract: A bellows-type pressure responsive valve comprising bellows 66 of a closed structure as a pressure sensing element adapted to vary an opening amount of the valve by transmitting expansions and contractions of the bellows 66 to a valve body 61 by means of a valve rod 65 which is supported on a valve housing 51 so as to move in a valve lifting direction, characterized in that the bellows 66 and the valve rod 65 are spherically connected by means of a spherical coupling structure which is incorporated at a connecting portion of the bellows 66 and the valve rod 65 and composed of a ball 77 which is rotatably disposed coaxially with the valve rod 65, and a spherical recess 78 which is formed at a closed end face 67a of a bellows body 67 of the bellows 66 at a central position thereof. With this structure, centripetal motions of the bellows and the valve rod are automatically effected by means of the spherical coupling between the bellows and the valve rod.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: June 26, 2001
    Assignees: Kabushiki Kaisha Saginomiya Seisakusho, Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Kiyoshi Kumagai, Ichiro Ohkawara, Tomoo Okada, Shigeyuki Hidaka
  • Patent number: 6241126
    Abstract: An apparatus that serves as a desktop beverage dispenser. The invention is comprised of a base that holds an inverted bottle of a chosen beverage. The bottle of the chosen beverage can be screwed into a concave threaded inlet that is on top of the base. The concave threaded inlet is above the lever and valve assembly within the base. The lever and valve assembly controls the flow of the beverage from the bottle into a desired container such as a cup. The cup is slid into the bottom of the base underneath the lever and valve assembly, where the cup is garaged for the beverage to be dispensed therein.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: June 5, 2001
    Inventor: Andrew Goodman
  • Patent number: 6237892
    Abstract: A gate valve wherein a valve disc is moved to a position where the valve disc is brought into contact with a valve seat and a position where the valve disc is separated from the valve seat by a driving device provided outside of a valve housing through a valve rod projected from the inside to the outside of the valve housing. The valve disc is brought into contact under pressure with the valve seat in the valve housing when the valve rod is inclined at the end of the movement of the valve rod. A cylindrical bellows is provided at the outside of the valve housing, one end of the cylindrical bellows being sealingly secured to the valve housing and the other end of the cylindrical bellows being sealingly secured to the valve rod. The valve rod is inclined centering arround a center of the axial direction of said cylindrical bellows in the compressed state thereof.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: May 29, 2001
    Assignee: V Tex Corporation
    Inventor: Ichio Ito
  • Patent number: 6220568
    Abstract: Controlling switch structure of an atomizer handle, including a handle main body, a trigger, a stop lever, a long pivot pin, a short pivot pin, a controlling pin, a compression spring and a sealing cap. A top edge of the front end of the main body is disposed with a pivot seat. A pivot block is disposed on rear side of the pivot seat. A lower edge of the front end of the trigger is formed with a pivot hole. The top face of the front section of the trigger is formed with a rectangular perforation. Two sides of rear end of the rectangular perforation are respectively disposed with two arched retaining blocks. One end of the stop lever is disposed with two pivot plates. The other end thereof is disposed with an engaging section. A lower section of the controlling pin is disposed with a toothed flange. A large water sealing ring is inlaid on upper side of the toothed flange. A middle section of the controlling pin is formed with an annular groove.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: April 24, 2001
    Assignee: FWU Tien Industry Co., Ltd.
    Inventor: Jui-Lung Wu
  • Patent number: 6206343
    Abstract: A solenoid valve of a type wherein a yoke is provided thereon with a coil, a plunger arranged in the yoke coaxial therewith so as to be brought into a linear movement upon excitation of the coil and characterized in that a coating, such as Teflon®, is provided on at least one of an outer surface of the plunger and an inner surface of the yoke.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: March 27, 2001
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Masaaki Kato, Kazuhiko Maeda
  • Patent number: 6193212
    Abstract: A fluid control valve, which can control a fluid having a pressure in the order of 10 kg/cm2, has a response time in the order of several milliseconds can be made small in size, and a fluid supply/exhaust system that provides less gas counter flow in the event of a plurality of valves being used. A fluid control valve of the invention controls a fluid moving in a valve body by closing and opening a portion between a valve seat and a valve holder by use of a drive unit. The drive unit has a rod-shaped shaft for application of pressure through the valve seat and the valve holder, and a member “a” fixed around the rod-shaped shaft. The member “a” is made from a magnetic material, and has a space between it and the shaft. A coil provided in parallel to the shaft, moves the shaft via the member “a” up and down by electromagnetic induction, and makes use of a spring force to close and open a portion between the valve seat and the valve holder.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: February 27, 2001
    Assignees: Tohoku Steel Co., Ltd., Fujiken Inc.
    Inventors: Tadahiro Ohmi, Migaku Takahashi, Michio Yamaji, Tsuyoshi Tanikawa, Nobukazu Ikeda, Ryosuke Dohi, Kouji Nishino, Naofumi Yasumoto, Hiroyuki Fukuda, Tomio Uno, Yasuyuki Yanai
  • Patent number: 6158632
    Abstract: A closure is configured for sealing engagement with an associated container, and includes a recessed, hinged cover. The closure has a circular top wall portion defining an edge region. A channel is formed in the top wall portion extending to the edge region. The channel defines an open end and a closed end and is formed by a pair of side walls and a bottom wall. A dispensing opening is formed in the channel bottom wall. An annular skirt depends from the top wall portion at about the edge region and includes a container engaging portion for engaging the container. A cover is pivotally connected to the top wall portion for movement within the channel between an open position wherein the cover is pivoted away from the dispensing opening and a closed position wherein the cover overlies the dispensing opening and extends to about the channel open end.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: December 12, 2000
    Assignee: Phoenix Closures, Inc.
    Inventor: Len Ekkert