Plural Intermediate Members Patents (Class 418/213)
  • Patent number: 11346344
    Abstract: A vane rotary compressor may include a cylinder provided with at least one outlet port; a plurality of bearings coupled to both sides of the cylinder in an axial direction of the cylinder to form a compression space together with the cylinder; a rotational shaft radially supported by the plurality of bearings; a roller rotatably coupled to the rotational shaft and provided with a plurality of vane slots formed in a circumferential direction, each having a first end opened to an outer circumferential surface thereof; a plurality of vanes slidably inserted into the plurality of vane slots of the roller, respectively, and protruding toward an inner circumferential surface of the cylinder to partition the compression space into a plurality of compression chambers, respectively; a discharge valve coupled to the cylinder to open and close the at least one outlet port; and at least one bypass hole formed in at least one of the plurality of bearings or formed in the cylinder to bypass a portion of refrigerant compres
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: May 31, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Kiyoul Noh, Seokhwan Moon, Jinung Shin
  • Patent number: 9546658
    Abstract: A gas pump including a first housing part (1) comprising a sealing surface (6); a second housing part (2) comprising a sealing surface (7); a delivery chamber (3) comprising an inlet (4) and an outlet (5) for a gas; and a delivery device (11, 12), which can be moved within the delivery chamber (3), for delivering the gas, wherein the housing parts (1, 2) are joined to each other such that they at least partially enclose the delivery chamber (3) over a circumference of the chamber, and such that their sealing surfaces (6, 7) abut each other in order to seal off the delivery chamber (3), and wherein a sealing recess (9) extends in at least one of the sealing surfaces (6, 7) around the delivery chamber (3) and is filled with a sealing liquid when the gas pump is in operation.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: January 17, 2017
    Assignee: SCHWÄBISCHE HÜTTENWERKE AUTOMOTIVE GMBH
    Inventors: Jürgen Bohner, Sven Peters
  • Patent number: 6283728
    Abstract: A plurality of rotary assemblies driven by gas pressure having internal cam activated retractable gates selectively coupled to a rotary compressor. The rotary compressor is selectively coupled through a clutch to a shaft. The shaft is rotated by the plurality of rotor engine assemblies that are driven by gas pressure. A gate is coupled to a cam follower bearing that rides on an internal surface of the rotor housing, causing the gates to form chambers within the rotor as well as move out of position to pass a chamber divider. The shaft may be coupled to a load to do work.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: September 4, 2001
    Inventor: Constantin Tomoiu
  • Patent number: 5364245
    Abstract: Dry-running twin-shaft vacuum pump (1) with at least one pumping chamber (11, 12, 13), with a rotor pair (4-5, 6-7, 8-9) situated in the pumping chamber and borne by the shafts, and with a drive housing (21); in the pumping of toxic media, to limit the contaminated areas to components that are easy to assemble it is proposed that between the drive housing (21) and the adjoining pumping chamber (13) an intermediate plate be provided, which is traversed by the shafts (2, 3), contains the laterally exiting exhaust duct (52), and is releasable from the wall (17) of the drive housing (21).
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: November 15, 1994
    Assignee: Leybold Aktiengesellschaft
    Inventors: Hartmut Kriehn, Lothar Brenner
  • Patent number: 5037283
    Abstract: Vane type positive displacement pump includes three separate vane type pump units on a single shaft, with spacers between the middle pump unit and both end pump units for axially positioning the pump vanes for the middle pump unit at both ends and axially positioning the pump vanes for the two end pump units at one end. The shaft has reduced diameter journal portions adjacent opposite ends of the barrel portion for the middle pump unit on which the spacers are mounted. Also, the outer diameter of the barrel portions for the two end pump units corresponds to the outer diameter of the journal portions for the spacers. At the other end of the end pump units are end bearings for axially positioning the vanes for the end pump units at such other ends.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: August 6, 1991
    Assignee: Lear Romec Corp.
    Inventors: Desh K. Kapur, Duane C. Johnson
  • Patent number: 5030071
    Abstract: A roller vane motor as described, the motor having a stator with a generally cylindrical chamber provided with fluid inlet and outlet means. A rotor is provided in the chamber to be rotatable therein, the rotor having a slot to receive a roller which forms a seal between the rotor and said chamber. The roller is urged into the sealing condition by means of drive fluid flowing behind the roller. A twin-roller version is also described as is a motor assembly made up of a number of vane motors arranged in line.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: July 9, 1991
    Inventor: Neil A. A. Simpson
  • Patent number: 4960371
    Abstract: A rotary gas compressor suitable for heavy duty continuous or intermittent operation with automatic inlet and outlet pressure control valves to reduce power consumption and increase volumetric efficiency. Articulated volume displacers further increase volumetric efficiency, extend life of wearing components and permit infinitely variable capacity control from 0 to 100%. High loads and high speeds are possible due to intrinsic radial load balancing. Additional provisions include replaceable cylinder liners.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: October 2, 1990
    Inventor: H. Eugene Bassett
  • Patent number: 4548561
    Abstract: The invention relates to a hydraulic machine useful in pumping, drilling, etc. especially at great distances, comprising a housing defining a multiplicity of eccentric working chambers. A rotor is mounted to rotate in each chamber and comprises, in a radial recess, a distribution and separation element which separates the chamber into two spaces: an inactive space emptied by a lateral bore in the housing; and an active space that receives fluid under pressure via a shaft solid with the rotor and a hollow made in the separation element. The fluid under pressure rotates the rotor by exerting its thrust on the separation element.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: October 22, 1985
    Inventor: Joseph Bitar
  • Patent number: 4512728
    Abstract: A vane-type rotary pump and a vane-type rotary compressor are integrated into a single unit and are driven by a common shaft. The compressor assembly is positioned at the rear of the pump assembly to minimize the number of mechanical seals required to seal the pump assembly along the shaft. The combined pump and compressor unit is provided with a regulating mechanism for reducing the compressor output during moderate or off modes of the refrigerant circuit.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: April 23, 1985
    Assignees: Nippon Soken, Inc., Nippondenso Co., Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiromichi Nakano, Hideaki Sasaya, Mitsuo Inagaki, Kazuma Matsui, Kunimasa Yoshimura
  • Patent number: 4328824
    Abstract: A flow divider is described for accurately dividing and metering the flow of a common fluid, such as fuel oil, to a plurality of fluid outlets. The flow divider includes a plurality of metering gear sets rigidly fixed on two parallel common continuous shafts, with each of the gear sets separated from adjacent gear sets by separater spacers also fixed on the shafts but free to move in a common radial cavity formed by a split housing enclosing the shafts and gears. The two parallel common continuous shafts are supported at each end by roller bearings which are separated from the gear sets by means of a seal and are lubricated by a separate source of lubricant. The roller bearings on one end of the parallel shafts are fixed in an axial location relative to the shafts and the roller bearings on the other end of the common shafts are free to move axially without experiencing binding or seizing of the shafts or roller bearings.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: May 11, 1982
    Assignee: General Electric Company
    Inventors: James G. Kiernan, James G. Leonard
  • Patent number: 4259045
    Abstract: A gear pump or motor wherein at least two pump or gear units are arranged in coaxial relationship and have their axially inwardly extended driven and driving shafts journalled in a common intermediate casing, the driving shafts being splined together with an internally splined sleeve. The inlet port opened in the intermediate casing is communicated through low-pressure passages with the pump chambers of the respective pump or motor units (and with the assembly chamber or pocket formed to accommodate the opposing ends of the axially inwardly extended driving shafts). The diameter of the inlet port is made larger than the size of the sleeve for interconnecting the driving shafts so that the sleeve may be inserted through the inlet opening into the assembly chamber or pocket and interconnect the driving shafts. Thus, in assembly the interconnection between the driving shafts may be much facilitated.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: March 31, 1981
    Assignee: Kayabakogyokabushikikaisha
    Inventor: Hideo Teruyama
  • Patent number: 4204815
    Abstract: A rotary vane vacuum pump includes a drive unit, such as an electric motor, and a pump unit, preferably constructed as a cartridge pump unit. The drive unit may take any suitable form, but the cartridge unit includes one or more pumping stages plus a pumping stage of small dimension to lower pressure and increase outgassing of the lubricant. The rotors of the rotary vane pump unit are shaftless, that is they together form an axis of rotation without a separate axial shaft and are thus simplified in construction. All of the requirements of oiling, outgassing and gas ballast are fulfilled in the additional stage.
    Type: Grant
    Filed: December 6, 1977
    Date of Patent: May 27, 1980
    Assignee: Gast Manufacturing Corporation
    Inventor: Joseph A. Le Blanc
  • Patent number: 4012181
    Abstract: The present invention relates to rotary engines of the type comprising a casing, assembled with two transverse end-plates and constituting a stator equipped with fluid-admission and exhaust tubes; a rotor associated with means for displacing said rotor in the stator so as to form working chambers with this latter; and rectilinear segments freely mounted in rectilinear grooves provided respectively along generator lines of said casing, corresponding to the separation edges of the working chambers on the internal surfaces of each end-plate, following at least three directions and forming a polygon surrounding the rotor-displacement means by virtue of a crossed arrangement, by overlapping of segments in pairs, especially along the radial directions corresponding to said casing segments and extending at least up to a segment of said polygon, each of these segments co-operating with other segments by slots or notches forming expansion clearances.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: March 15, 1977
    Inventors: Andre Brulfert, Andre Gabriel Hoss