For Reverse Drive Or Flow Patents (Class 417/239)
  • Patent number: 8480375
    Abstract: An auto-stop air pump has a housing, a blower and an auto-stop device. The housing has an upper chamber, a lower chamber, a main inlet and an outlet. The upper chamber and the lower chamber communicate with each other. The main inlet and the outlet are formed through the housing respectively and communicate with the upper chamber. The blower is mounted in the housing and has a motor connected to a dual-sided impeller. The auto-stop device is mounted in the housing and has a shell, a film, a micro switch and an actuating unit. The film and the micro switch are mounted in the shell. The actuating unit is mounted movably through the shell. Owing to deformation of the film by pressure, the film presses the micro switch to close the micro switch so the air pump can stop working automatically.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: July 9, 2013
    Assignee: Dongguan Tiger Point, Metal & Plastic Products Co., Ltd.
    Inventor: Chun-Chung Tsai
  • Patent number: 8348631
    Abstract: The invention relates to a lubricant or hydraulic pump for delivering oil or the like having a housing which is formed from two housing shells which are of at least substantially similar or identical construction. An inlet is provided on or in the housing. Furthermore, a rotatably mounted drive element, which is configured, in particular, as a swash plate, and at least one pump element which interacts with the drive element to deliver oil or the like are arranged in the housing.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: January 8, 2013
    Assignee: Lincoln GmbH
    Inventors: Zdravko Paluncic, Andreas Schoenfeld
  • Publication number: 20100247337
    Abstract: An air pump for an air mattress has a housing, a first air vent and a second air vent respectively mounted on a top and a bottom of the housing, a chamber, a blower and an air direction switcher mounted in the chamber, an actuating mechanism, and an air valve. A slider in the air direction switcher is moved by operating the actuating mechanism being a solenoid valve or a knob gear and a follower. The air valve is propped up by a sloping partition of the slider to open the second air vent. Given the structure of the air pump, the first and second air vents are flexibly arranged and can be directly aligned with each other. Therefore, the air path is shortened to inflate and deflate more rapidly and more efficiently.
    Type: Application
    Filed: October 27, 2009
    Publication date: September 30, 2010
    Inventor: Chun-Chung Tsai
  • Patent number: 7313837
    Abstract: An inflatable product that includes a chamber and an electric air pump for inflating the chamber. The air pump has an air intake and an air outlet. The air intake is connected to the outside of the chamber and the air outlet is connected to the inside of the chamber when the air pump is moved to a first position. The air intake is connected to the inside of the chamber and the air outlet is connected to the outside of the chamber when the air pump is moved to a second position.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: January 1, 2008
    Assignee: Team Worldwide Corporation
    Inventor: Cheng Chung Wang
  • Patent number: 7120955
    Abstract: An inflatable product that includes a chamber and an electric air pump for inflating the chamber. The air pump has an air intake and an air outlet. The air intake is connected to the outside of the chamber and the air outlet is connected to the inside of the chamber when the air pump is moved to a first position. The air intake is connected to the inside of the chamber and the air outlet is connected to the outside of the chamber when the air pump is moved to a second position.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: October 17, 2006
    Assignee: Team Worldwide Corporation
    Inventor: Cheng Chung Wang
  • Patent number: 7082762
    Abstract: A pump having a symmetric end cap is disclosed. The end cap is attachable in a first position or a second position wherein the second position is rotated relative to the housing. A trunnion arm extends in a first direction and a system port opens in a first orientation when the housing is connected to the end cap in a first position. The end cap includes structure such that the housing may be connected in a second position so that the trunnion arm extends in a second direction while maintaining the system port opening in the first orientation. The end cap may be provided with a symmetric porting system. A control device for affecting movement of the swashplate is disclosed. Methods of locking the swash plate into a predetermined position are also taught.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: August 1, 2006
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Robert Trimble
  • Patent number: 6889595
    Abstract: A pump having a symmetric end cap is disclosed. The end cap is attachable in a first position or a second position wherein the second position is rotated relative to the housing. A trunnion arm extends in a first direction and a system port opens in a first orientation when the housing is connected to the end cap in a first position. The end cap includes structure such that the housing may be connected in a second position so that the trunnion arm extends in a second direction while maintaining the system port opening in the first orientation. The end cap may be provided with a symmetric porting system. A control device for affecting movement of the swashplate is disclosed. Methods of locking the swashplate into a predetermined position are also taught.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: May 10, 2005
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Robert Trimble
  • Publication number: 20040175277
    Abstract: A hydrostatic pump assembly having a casing which encloses a pumping mechanism, and including a housing, and an endcap attached to the housing. The endcap has at least one lateral exterior surface, and a first system fluid passage having a pair of system ports located in the endcap lateral exterior surface, and a second system fluid passage having a pair of system ports located in the endcap lateral exterior surface, each of the first and second system fluid passages being in fluid communication with the pumping mechanism. In one embodiment, the pair of system ports of the first system fluid passage are located opposite each other in the endcap lateral exterior surface. The pair of system ports of the second system fluid passage may also be located opposite each other in the endcap lateral exterior surface.
    Type: Application
    Filed: June 24, 2003
    Publication date: September 9, 2004
    Inventors: C. Paul Cox, David D. Hypes, Orville R. McDonner
  • Publication number: 20040126244
    Abstract: A vacuum pump system (10; 36; 46) for pumping gas from an enclosure (12) comprises: a vacuum pump unit (14) having a pump inlet (16) connectable with an outlet (18) of such an enclosure and a pump outlet (20) for exhausting gas; and a chamber (22; 50) selectively connectable with the pump inlet and the pump outlet, such that, in use, in a first state gas can be pumped from the chamber to the pump inlet by the vacuum pump unit and in a second state gas can be evacuated from the pump outlet to the chamber to reduce pressure at the pump outlet.
    Type: Application
    Filed: May 15, 2003
    Publication date: July 1, 2004
    Applicant: The BOC Group plc
    Inventors: Derek Graeme Madgewick Savidge, Neil Turner, Graeme Huntley
  • Patent number: 6422832
    Abstract: An air pump is capable of inflating and deflating an inflatable object and is formed of a main body having a cylinder duct, an air outlet and an air inlet in communication with the cylinder duct. The air in the cylinder duct is let out via the air outlet. The atmospheric air is let into the cylinder duct via the air inlet. Two check valves are disposed respectively at the air outlet and the air inlet. A compressing member has a piston which is movably disposed in the cylinder duct of the main body. An adjustment member is pivoted to the main body such that the adjustment member is displaced between a first position and a second position, so as to enable the adjustment member to be in communication with the air outlet or the air inlet to bring about the inflating function or the deflating function.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: July 23, 2002
    Inventor: Lo-Pin Wang
  • Patent number: 6336391
    Abstract: A hydraulic rotating axial piston engine having a housing enclosing a rotatable cylinder barrel. The engine has a number of axial cylinders with a number of reciprocating pistons. The pistons reciprocate between two defined end positions, and cooperate with a plate angled relative to a rotational axis of the barrel in order to obtain the reciprocating movement. The cylinders have ports alternatively acting as inlet and outlet ports. The housing has an inlet and an outlet channel, each having a kidney shaped port, facing towards the ports of the cylinders and communicating with a number of the cylinder ports. The housing has two parts, one of the housing parts defines the turning positions of the barrel in the end positions of the pistons. A second housing part defines the turning positions of the kidney shaped ports, relative to the end positions. The first and second parts of the housing are alternatively positionable in two different turning positions in the rotational direction of the cylinder barrel.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: January 8, 2002
    Assignee: Parker Hannifin A.B.
    Inventors: Filip Alm, Ingvar Johansson
  • Patent number: 6332393
    Abstract: A symmetric pump having a symmetric end cap attached to a symmetric housing is disclosed. The end cap is attachable in a first position or a second position wherein the second position is rotated relative to the housing. A trunnion arm extends in a first direction and a system port opens in a first orientation when the housing is connected to the end cap in a first position. The end cap includes structure such that the housing may be connected in a second position so that the trunnion arm extends in a second direction while maintaining the system port opening in the first orientation. The end cap may be provided with a symmetric porting system. A control device for affecting movement of the swashplate is disclosed. Methods of locking the swashplate into a predetermined position are also taught.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: December 25, 2001
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Robert Trimble
  • Patent number: 6332760
    Abstract: An inflatable product includes an inflatable body, a socket, an electric pump and a battery case. The socket is built in the inflatable body. The electric pump is detachably connected to the socket to pump the inflatable body. The battery case is also built in the inflatable body for receiving batteries to supply the electric pump with power.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: December 25, 2001
    Assignee: Team Worldwide Corporation
    Inventor: Wang Cheng Chung
  • Patent number: 6217294
    Abstract: There is provided a combination container and portable electrically operated fan unit combination pursuant to which the fan unit may be carried on a mounting surface associated with the container. Holding means is provided for retaining the fan unit in position on the mounting surface portion of the container such that the apparatus presents a combination container and cooling unit.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: April 17, 2001
    Inventors: Terry E. Arnieri, Gregory A. Steiner
  • Patent number: 6182329
    Abstract: A portable air blower includes a housing having an air inlet and an air outlet, a fan rotatably mounted in the housing, a gear train attached to the housing to rotate the fan, a drive shaft having a first end and a second end, the first end secured to the gear train to operate the gear train, and a crank arm secured to the second end of the drive shaft to rotate the drive shaft manually.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: February 6, 2001
    Inventor: Ching-Chih Lin
  • Patent number: 5540563
    Abstract: A unitary housing for a hydraulic unit such as tandem pump, having a plurality of rotating groups driven in one direction about a common axis by a source of rotary power having a pair of opposite end walls generally transverse to the common axis, a continuous side wall connecting the end walls, and at least two apertures in the side wall which allow the insertion of a rotating group into the housing. The housing can also include a first flange on one of the end walls for mounting the housing to a source of rotary power. A second flange can be included on the other end wall for mounting an auxiliary pump to the main hydraulic unit. Alternatively, if the second flange is the same size as the first flange, the housing allows the user to change the rotation of the tandem pump by spinning the housing end-for-end and without changing any internal components.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: July 30, 1996
    Assignee: Sauer Inc.
    Inventor: Jeffrey C. Hansell
  • Patent number: 5489196
    Abstract: A manual pump includes first, second and third tubular members, and a restraining ring member. The first tubular member has a piston which is mounted movably in the first tubular member. The second tubular member has an upper open end which is fixed sealingly to a lower open end of the first tubular member. The second tubular member further has a first side wall that has first inflow and outflow check valves, and a lower closed end that has second inflow and outflow check valves and a first opening. The third tubular member has a top open end, a bottom constricted end, and a partition. A second opening is formed in a second side wall of the third tubular member. A third opening is formed in the partition. The second side wall has an external thread that is formed near the top open end of the third tubular member. The second tubular member is inserted rotatably into the third tubular member.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: February 6, 1996
    Inventor: Tzu-Chi Lee
  • Patent number: 5360321
    Abstract: A feeding reservoir for a two-cylinder pump is provided for the pressurized delivery of thick matter. The feeding reservoir includes a material supply port, a front wall having two pump-side ports therein, and a back wall opposite the front wall having two outlet-side ports therein. The pump-side ports lead to the delivery cylinders of the pump, and the outlet-side ports lead to delivery lines. The outlet-side ports are each positioned diametrically opposite to a respective pump-side port, forming two port pairs. A swing pipe is positioned in the reservoir capable of swivelling alternately between one port pair to the other port pair to place the outlet-side port of a port pair in communication with the pump-side port of the port pair. The swing pipe is a straight through-way pipe. Self-adjusting sealing and wearing rings are positioned between the ends of the swing pipe and the pump-side and outlet-side ports for being pressed against the ports under delivery pressure.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: November 1, 1994
    Assignee: Putzmeister-Werk Maschinenfabrik GmbH
    Inventors: Hartmut Benckert, Helmut Hurr
  • Patent number: 5156538
    Abstract: An elongated tubular member has an upper closed end and a lower closed end with a first opening. It also has a second opening on its wall and a suction unit movable within the same. A first tubular member has a top open end and a constricted bottom end. The first tubular member has a first inflow and outflow check valve circumferentially spaced from the first inflow check valve. A partition provided adjacent to he constricted bottom end of the first tubular member has a third opening and second inflow and outflow check valves. The elongated tubular member resides rotatably and engageably in the first tubular member.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: October 20, 1992
    Inventor: Tju-Chi Lee
  • Patent number: 5074195
    Abstract: A fixed swash plate for an axial piston machine of fixed capacitive type, which has a casing housing therein a cylinder, is formed to have its divided surfaces on the horizontal plane along the axis of the rotary shaft of the cylinder, wherein a support member constituting a fixed swash plate is formed to be easy to produce and the casings merely sandwich therebetween the support member, whereby a thrust bearing constituting the fixed swash plate is held in the state of being slanted at a predetermined angle other than 90.degree. with respect to the axis of rotary shaft. Also, the rotation direction of the fixed capacitive type axial piston machine is easy to change by inverting at an angle of 180.degree. the assembling direction of support member constituting the fixed swash plate.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: December 24, 1991
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Ryota Ohashi, Kenichi Takada
  • Patent number: 4895494
    Abstract: A double acting diaphragm pump includes a flat valve construction which is reversible to provide valving for both the inlet and outlet to the pumping chamber. A modular manifold construction cooperates with the flap valve construction to facilitate ease of replacement of the flap valve construction and case of repair of the diaphragm pump.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: January 23, 1990
    Assignee: The ARO Corporation
    Inventor: Richard K. Gardner
  • Patent number: 4673336
    Abstract: An oil free diaphragm gas pump for providing compressed gas and a gas vacuum is disclosed and includes a pressure tank, a concave pressure bulkhead, a first circular flange mounted on the pressure bulkhead and having a bevel on its inner edge, a round rigid diaphragm with an undulated circumferential periphery with its edge mounted on the bevel of the first circular flange, a round flexible diaphragm with an undulated circumferential periphery which matches the shape of the round rigid diaphragm and is mounted on the round rigid diaphragm, a second circular flange which together with the first circular flange presses together the flexible diaphragm and the rigid diaphragm, a prime mover for the purpose of moving the flexible diaphragm, and interchangable compressor and vacuum cartridge means alternately mounted between the diaphragms and the pressure tank for providing switching means for controlling the gas flow required for providing a compressor and a vacuum.
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: June 16, 1987
    Inventor: James D. Moore
  • Patent number: 4566370
    Abstract: A piston pump arrangement is provided which includes a drivable crank shaft supported in a crank drive housing for rotational movement. The crank shaft is drivingly connected to horizontally disposed axially reciprocating pump pistons. In order to facilitate driving of the crank shaft from either the right side or the left side to accommodate the available space requirements and driving motor connections, the crank drive housing is provided with fastening support surfaces arranged symmetrically with respect to a plane through the axis of the crank shaft and the axes of the pump pistons. To accommodate attachment of auxiliary aggregates, such as lubricating/cooling circuit mechanisms, fastening points for such aggregates are also arranged symmetrically with respect to the plane of the crank shaft axis and the pump pistons.
    Type: Grant
    Filed: January 17, 1984
    Date of Patent: January 28, 1986
    Assignee: Uraca Pumpenfabrik GmbH & Co. KG
    Inventor: Nabil Hanafi
  • Patent number: 4482300
    Abstract: A coupling apparatus (10) for connecting a reversible pump (14) having first and second ports (24,26) to a fluid source (16) and to a user device (20) includes a first manifold (30) connected to the pump (14) and a second manifold (32) connected to the first manifold (32). The second manifold (32) has first and second inlet passages (52,56) and one of them is connected to the fluid source (16) and the other is blocked by a plug member (78). The first manifold (30) can be disposed in one of two positions of fluid communication with the pump ports (24,26) by disassembly and assembly of the apparatus (10) to accommodate for reverse operation of the pump without a piece part change and while maintaining system reliability. The coupling apparatus (10) is particularly useful in a marine transmission.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: November 13, 1984
    Assignee: Caterpillar Tractor Co.
    Inventor: Robert E. Brown
  • Patent number: 4117967
    Abstract: A solder extractor apparatus is configured as a self-contained bench unit ving a pump motor to provide an instantaneous source of pressure or vacuum available to the operator from a common port on the apparatus, the pump being started by the operator when he lifts the solder extractor iron from its support holder, and thereafter, the use of the pressure or vacuum being controlled by a foot operated switch so as to be available at the appropriate time in the solder extraction process.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: October 3, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ephraim Regelson, Leonard G. Terral, Ronald J. Matusiak, Jerry L. Trotter, William L. Rea, Edward L. Mangel
  • Patent number: RE42559
    Abstract: An inflatable product includes an inflatable body, a socket, an electric pump and a battery case. The socket is built in the inflatable body. The electric pump is detachably connected to the socket to pump the inflatable body. The battery case is also built in the inflatable body for receiving batteries to supply the electric pump with power.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: July 19, 2011
    Assignee: Team Worldwide Corporation
    Inventor: Cheng Chung Wang