Convertible To Apparatus Of A Different Class Patents (Class 417/236)
  • Patent number: 11719389
    Abstract: The invention relates to a backfeeding installation (30) which comprises: modules (31 to 35 and 37) comprising the following functions: at least one compressor for compressing gas, an automaton for controlling the operation of at least one compressor, at least one sensor for checking the quality compliance of the gas circulating in the compressor, at least one meter for metering a flow rate of gas circulating in the compressor, and at least one filter for filtering the gas circulating in the compressor; and an interconnection module (36A, 36B) for interconnection between the other modules and with a gas network (15) at a first pressure and a gas network (10) at a second pressure higher than the first pressure. At least one of these modules is mobile and configured to be transported, in its entirety and operational by means of a removable connection to the interconnection module and to a power source, on a single vehicle.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: August 8, 2023
    Inventors: Daniel Dufour, Francis Bainier, Marc Vanbaleghem, Alban Sesmat, GĂ©rard Cattoen
  • Patent number: 11180233
    Abstract: A combined paddle and pump can be used to propel a small boat. The handle telescopes with a locking nut that may be loosened to allow extension and retraction of the handle. The handle is hollow throughout and a pair of check valves are provided. One check valve opens when the handle is extended and the other opens when the handle is retracted. When one check valve is open, the other is closed. When the distal end of the paddle is placed within a volume of water, extension and retraction of the handle results in a liquid first being sucked into the hollow interior of the handle and then propelled out of the handle.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: November 23, 2021
    Inventor: Daniel Roger Dufault
  • Patent number: 10731638
    Abstract: A valve comprising a base plate defining an inlet and outlet passageway. A cover plate is disposed on the base plate and defines a first and second channel. A pressure plate is disposed on the base plate and includes a first anchoring portion, a first sealing portion, and a first biasing portion connecting the first anchoring portion and the first sealing portion. Furthermore, a suction plate is disposed on the base plate and includes a second anchoring portion, a second sealing portion, and a second biasing portion connecting the second anchoring portion to the second sealing portion. The valve is movable between a first configuration, where the first sealing portion is distal to first channel and the second sealing portion is proximal to inlet passageway, and a second configuration, in which the first sealing portion is proximal to first channel, and second sealing portion is distal to inlet passageway.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: August 4, 2020
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Dirk Hinze, Kay Schmidt, Thomas Betz
  • Patent number: 10260493
    Abstract: The invention relates to a diaphragm pump (109) having a pump housing (1) on which a disposable cell (2) is releasably fixable, which disposable cell has a first and a second cell wall (3, 4) which (3, 4) define an operating space (5) between them, and having an operating diaphragm (6) which (6) is drivingly connected to an oscillating stroke drive and which (6) is releasably coupleable with the flexible first cell wall (3) on its diaphragm flat side remote from the stroke drive. It is characteristic to the diaphragm pump (109) according to the invention that at least one outlet port (12) in the operating diaphragm (6) is provided with a return flow obstructer or a return flow preventer for evacuating the dead space (11) arranged between it and the first cell wall (3) (cf. FIG. 1).
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: April 16, 2019
    Assignee: KNF Flodos AG
    Inventor: Stephan Kaufmann
  • Patent number: 10100828
    Abstract: Systems and methods for analyzing an infusion pump are provided. One infusion pump analyzer includes a fluid flow path configured to be coupled to an infusion pump to be tested and a pair of fluid chambers. The infusion pump analyzer further includes dual linear piston pumps coupled with the pair of fluid chambers and the fluid flow path to control the flow of fluid therethrough, and a valve coupled with the pair of fluid chambers and configured to rotate to selectively fill and drain the pair of fluid chambers.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: October 16, 2018
    Assignee: LLOYD INDUSTRIES, INC.
    Inventor: Aaron Littich
  • Patent number: 8678778
    Abstract: A flow-ducting system with a combined pump-drive module, the pump-drive module including a drive module, and a pump module having an impeller that can be driven by the drive module, the unit including a casing having at least one inlet side and at least one outlet side and a moveable shut-off device arranged between them, a flow path between the inlet side and the outlet side being formed in at least one position of the shut-off device, and the pump module being arranged in the flow path between the inlet side and the outlet side. In at least one further position of the shut-off device (10, 10?), the unit (1) is capable of shutting off the flow path (9) in such a way that the shut-off device (10, 10?) and the unit casing (2) form an area (20), which is separated from the flow path (9) and which is sealed off from the inlet side (5) and the outlet side (6), and the pump-drive module (11, 11?) is arranged at least partially inside this area (20).
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: March 25, 2014
    Assignee: KSB Aktiengesellschaft
    Inventors: Franz Bosbach, Daniel Huying
  • Patent number: 8662863
    Abstract: In accordance with various embodiments of the present invention, a system and method are provided for converting a conventional automobile engine into a gas compressor. In various embodiments, the system and method may provide an economical and efficient gas compressor by modification of a balance-opposed internal-combustion engine to provide a balance-opposed gas compressor. More specifically, in some embodiments, the modification may include a uniquely designed cylinder head adapted to convert an automobile engine into a gas compressor for the recovery, gathering, transfer, or staged compression of natural gas. In one embodiment, a four-cylinder balance-opposed engine is utilized.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: March 4, 2014
    Assignee: OTA Compression, LLC
    Inventor: Thompson Speir
  • Patent number: 8454330
    Abstract: A bore-hole pump has an electrical drive motor (3) and a multi-stage centrifugal pump (4) which is driven thereby. A sensor housing (9) is arranged at the end of the pump, in which one or more sensors are arranged, and which is surrounded by fluid and through which fluid flows (FIG. 1).
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: June 4, 2013
    Assignee: Grundfos Management a/s
    Inventor: Jan Lyngholm
  • Patent number: 8425203
    Abstract: A portable pressure washer system includes a frame having at least one strap configured such that the frame is supported by a user by way of the at least one strap. A torque generating device is supported by the frame and has an output shaft. A pump is selectively coupled to the output shaft to receive a torque generated by the torque generating device. The pump includes an inlet for connecting to a remote fluid source and an outlet for connecting to a high pressure fluid delivery mechanism. The pump receives a fluid from the remote fluid source by way of the inlet, is driven by the torque generating device to raise a pressure of the fluid to a high pressure fluid, and delivers the high pressure fluid to the high pressure fluid delivery mechanism by way of the outlet.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: April 23, 2013
    Assignee: Techtronic Outdoor Products Technology Limited
    Inventors: Michael R. Gardner, Klaus K. Hahn, Lee Sowell
  • Patent number: 8016570
    Abstract: A gas compressor unit according to the invention includes a single gas desiccant bed and condenser (which is inactive during the compression stage) inserted into the gas flow path of the compression cycle. In the case of a multistage compressor, the single gas desiccant bed is inserted between preferably the first and second stages. Moisture absorbed into this bed is periodically removed by exposing the bed to a regeneration cycle. The regeneration cycle employed is based on the closed re-circulation of gas present in the compressor and the desiccant bed itself, as well as other gas present in the re-circulation loop when the unit suspends delivery of compressed gas. Moisture removed from the desiccant bed is condensed and preferably evaporated into the environment through a semipermeable membrane. The motor and motor controller are located with the compressor in a common casing to minimize electromagnetic emissions.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: September 13, 2011
    Assignee: MTM S.R.L.
    Inventors: Anthony Chan, Ralph Rackham, Tome Mojsov, Tracey Demaline, Filip Antanassov
  • Publication number: 20110070100
    Abstract: A system includes a compressor having a shell housing a compression mechanism driven by an electric motor in an on state and not driven by the electric motor in an off state. The system also includes a variable frequency drive that drives the electric motor in the on state by varying a frequency of a voltage delivered to the electric motor and that supplies electric current to a stator of the electric motor in the off state to heat the compressor.
    Type: Application
    Filed: September 23, 2010
    Publication date: March 24, 2011
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Daniel L. McSweeney, Charles E. Green, Stephen M. Seibel
  • Patent number: 7798786
    Abstract: A manually operated pump for a bicycle comprises two cylindrical members with a first cylindrical member slidable within a second cylindrical member. One end of the first cylindrical member is provided with a fitting to receive a saddle while one end of said second cylindrical member is provided with a foot stand assembly which comprises a foldable foot stand and a retractable air hose. The pump is designed to be received in the seat post of the bicycle frame and the two cylindrical members are arranged to be releasably connected together in a closed position.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: September 21, 2010
    Inventor: Philip Edward Robinson
  • Patent number: 7753658
    Abstract: A self-attaching pump includes a cylinder, a nozzle attached to the cylinder, a piston installed in the cylinder, a rod connected to the piston, a handle with a first end and an opposite second end, a fastener for pivotally connecting the second end of the handle to the rod and a stressing device arranged on the cylinder for stressing the self-attaching pump. There are defined a first value for the distance between the fastener and the first end of the handle, a second value for the length of the elastic element when the stressing does not stress the self-attaching pump and a third value for the distance between the piston and the nozzle when the first end of the handle reaches the stressing device while the stressing device does not stress the self-attaching pump. The first value is larger than the second value that is larger than the third value.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: July 13, 2010
    Inventor: Scott Wu
  • Publication number: 20090116973
    Abstract: A pump for use in combination with shock absorbers comprises a joint having a first portion, a second portion and a channel extending therethrough. A tube receives the second portion of the joint. A collar includes a first end and a second end, with the first end pivotally receiving the first portion of the joint. An adapter is positioned above the first portion of the joint and includes a passage therein and an air anti-leak member for preventing air leak between the channel and the passage when pumping. A cap is engaged with the second end of the collar and including an opening into which a valve is adapted to insert and thereafter engages with the nozzle head.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 7, 2009
    Inventor: Scott Wu
  • Patent number: 7418824
    Abstract: A complex fluid machine has an expansion-compressor device, a pump, and a motor generator, wherein the expansion-compressor device, the pump, and the motor generator are operatively connected and arranged in series, and a power transmitting device for disconnecting the pump from the motor generator, when the expansion-compressor device is driven by the motor generator so as to be operated as a compressor device.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: September 2, 2008
    Assignees: DENSO CORPORATION, Nippon Soken, Inc.
    Inventors: Keiichi Uno, Hironori Asa, Yasuhiro Takeuchi, Hideji Yoshida, Akihiro Imura, Atsushi Inaba, Koichi Ban, Takashi Yamanaka, Shigeki Iwanami, Hiroshi Kishita, Hiroshi Ogawa
  • Patent number: 6926814
    Abstract: An automatable measuring, cleaning and calibrating device for pH-electrodes or electrodes for measuring redox potentials, specifically in process engineering, having an electrode armature which keeps the measuring electrode in an operating position or in a maintenance position, whereby the electrode is retained in the maintenance position in a rinsing chamber in which a cleaning and calibration procedure can be performed. The device has a pump device to supply cleaning fluid and calibration solutions to the rinsing chamber over a delivery line connecting the pump device and the rinsing chamber. In order to configure the device more compactly, the pump device includes several feeds on its intake side, and a device is furnished to selectively activate a particular feed, and the media (cleaning fluid, calibration solution, etc.) brought selectively over the particular feeds to the pump device reach the rinsing chamber over the common delivery line.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: August 9, 2005
    Assignee: Endress & Hauser Conducta Gesellschaft fur Mess-und RegeltechnikmbH & Co.
    Inventors: Ralf Koenemann, Bernhard Beck, Detlev Wittmer
  • Publication number: 20040156729
    Abstract: The invention relates to apparatus having a feed pump and scavenge pump arrangement and components for the same in an improved manner which allows an increase in efficiency of operation of the pumps and also, at the same time, improved ease of manufacture of the components. The feed and scavenge pump arrangements are provided in a common body which has a feed pump chamber and scavenge pump chamber connected to an oil reservoir and crankshaft and sump respectively by a series of bores which are shaped so as to allow connection with the same and also shaped to avoid conflict with fixing locations on the body of the apparatus.
    Type: Application
    Filed: January 5, 2004
    Publication date: August 12, 2004
    Inventors: Anthony Waterworth, Graham Waterworth
  • Patent number: 6099267
    Abstract: A fluid compressor that includes a compressor base; a compression module fixed to the base; and a compressor control device, such as a compressor starter box, fixed to the base; where the compressor base includes means for moving the compressor starter box toward and away from the compression module while the compressor starter box is attached to the base.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: August 8, 2000
    Assignee: Ingersoll-Rand Company
    Inventors: Mark J. Ames, Craig W. Haddock
  • Patent number: 6065942
    Abstract: A utility package for installation in the bed of a pickup truck includes a frame (10) having a relatively narrow, lower vertical section (12) of a width W1 narrower than the interior spacing between the sides of the pickup truck bed while substantially spanning the entire interior distance between such sides and a relatively wide, upper horizontal section (14) of a width greater than the interior spacing between the sides and no greater than about the distance between the exteriors of the sides and adapted to be supported on the tops of the sides. An elongated pressure vessel (26) is located within the vertical section (12) and a pair of upright housing sections (64,68) are mounted on the horizontal section (14) oppositely of the vertical section (12). The housing section (64,68) have access openings (78) at respective ends (16,18) of the horizontal section (14).
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: May 23, 2000
    Assignee: Stellar Industries, Inc.
    Inventors: Travis Glidden, Francis L. Zrostlik, Thomas G. Formanek
  • Patent number: 5898965
    Abstract: An inflation/repair device for bicycle tires includes a pumping device including a head, a handle, and a piston rod having a first end slidably received in the head and a second end securely attached to the handle move therewith. The handle is releasably, securely engaged with an axle of a wheel. A tire removing/mounting member is mounted the head to engage with an inner peripheral end edge of a tire mounted on a rim of the wheel for removing the inner peripheral end edge of the tire out of the rim or mounting the inner peripheral end edge of the tire into the rim.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: May 4, 1999
    Inventor: Louis Chuang
  • Patent number: 5606769
    Abstract: A wet/dry utility vacuum cleaner with detachable blower is disclosed. The detachable blower, when mounted in sealed relationship to a lid positioned above a utility vacuum cleaner drum, operates as a wet/dry utility vacuum cleaner. When separated from the utility vacuum cleaner drum, the detachable blower can be used for non-vacuuming applications. The utility vacuum drum lid includes two detachable latches, a detachable blower latch and a detachable drum latch. The detachable blower latch detachably mounts the detachable blower to the lid while the detachable drum latch detachably mounts the lid relative to the utility vacuum cleaner drum. The detachable blower includes a U-shaped handle positioned in proximity to the detachable blower latch to enable gripping the U-shaped handle while permitting operation of the detachable blower latch for engaging or disengaging the detachable blower relative to the lid.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: March 4, 1997
    Assignee: Emerson Electric Co.
    Inventors: Mark J. Tomasiak, Jeffrey L. Young, Stuart V. Holsten
  • Patent number: 5575628
    Abstract: An internal combustion engine having cylinders and a head assembly adapted for compressing gas, wherein one or more cylinders of an inline-cylinder engine are modified to compress flammable gas, such as natural gas. The engine cylinders and head assembly are adapted to compress gas by: modifying existing engine valves to secure compressor intake and discharge valves within the head assembly; converting engine pistons into compressor pistons; inserting filler plates into the head assembly; and replacing the engine manifold, which is in communication with the adapted cylinders, with gas intake and discharge manifolds.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: November 19, 1996
    Inventor: Lynn Caldwell
  • Patent number: 5404614
    Abstract: A quick attach-detach assembly of a wet-dry vacuum cleaner for selectively mounting an air blower on a lid includes a blower housing supporting a motor and a fan mounted to the motor and a lid to which the housing can be removably secured. The lid includes an aperture, an annular wall encircling the aperture and an annular ringlike surface defined on the wall. A retaining wall portion extends over a section of the ringlike surface to define a tunnel-shaped section. The blower housing includes a face on which is defined a protrusion. When the blower housing is mounted on the lid, the protrusion of the housing face is located adjacent the tunnel-shaped section. A locking ring is mounted on the lid for limited rotation thereon. A rotation of the ring selectively locks and unlocks the blower housing from the lid.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: April 11, 1995
    Assignee: Royal Appliance Mfg. Co.
    Inventor: Paul D. Stephens
  • Patent number: 5378113
    Abstract: An internal combustion engine having cylinders and a head assembly adapted for compressing gas, wherein one or more cylinders of an inline-cylinder engine are modified to compress flammable gas, such as natural gas. The engine cylinders and head assembly are adapted to compress gas by: modifying existing engine valves to secure compressor intake and discharge valves within the head assembly; converting engine pistons into compressor pistons; inserting filler plates into the head assembly; and replacing the engine manifold, which is in communication with the adapted cylinders, with gas intake and discharge manifolds.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: January 3, 1995
    Inventor: Lynn Caldwell
  • Patent number: 5269665
    Abstract: A portable, hand-held blower/vacuum unit has a housing structure defined by an upper engine shroud removably connected to the top wall of a lower impeller housing. Disposed within the shroud is a small internal combustion engine having a vertical crankshaft which extends downwardly through a depending well section formed on the top wall of the impeller housing, the lower shaft end being drivingly connected to a centrifugal fan impeller positioned within the impeller housing and operative to force a flow of ambient air therethrough. The engine is resiliently and floatingly mounted within the shroud by a resilient support system which prevents rigid contact between the engine and the shroud or the impeller housing to thereby substantially reduce engine vibration transmitted to the housing structure, and permit deflection of the engine relative to the housing structure to lessen the possibility of engine damage caused by impeller impact from ingested objects.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: December 14, 1993
    Assignee: White Consolidated Industries, Inc.
    Inventors: Jeffrey G. Sadler, Lloyd H. Tuggle, Imack L. Collins
  • Patent number: 5265551
    Abstract: A high capacity emergency bilge pump employs an inclined axial flow propeller in a tubular casing for discharging bilge water to a body of receiving water at a level submerged below the surface of the body of receiving water. The propeller of the bilge pump is driven by an outboard motor.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: November 30, 1993
    Inventor: Axel E. Rosenblad
  • Patent number: 5201639
    Abstract: A device for providing auxiliary pumping capabilities for a sump pump system and other low volume pumping systems. The in-line pumping device includes a tubular element with threaded ends to be mounted in the discharge pipe line of a sump pump system. A piston in the tubular element may be reciprocated by manually moving a drive shaft extending laterally from the piston through a threaded boss in the tubular element. A valve means permits the unidirectional flow of fluid through a center bore in the piston. If the electric pump is inoperable, the manual pump of the present invention may be used to pump liquid from the sump through the discharge pipe line.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: April 13, 1993
    Inventor: Donald R. Reineck
  • Patent number: 5183392
    Abstract: A rotary hydraulic machine having particular utility as a fuel pump for aircraft turbine engines that combines the desirable features of vane-type and centrifugal-type machines of similar character--i.e., high pressure positive displacement at low speed combined with improved reliability, package size and weight. This is accomplished, in accordances with a presently preferred embodiment of the invention, by providing a combined vane- and centrifugal-type pump that is configured to function as a pressure-compensated single-lobe vane pump for engine starting, and as a centrifugal pump at normal operating speed.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: February 2, 1993
    Assignee: Vickers, Incorporated
    Inventor: Lowell D. Hansen
  • 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: 5137430
    Abstract: An air pump which can be stored in the frame of the bicycle and can also serve as the seat post of the bicycle. The air pump has an outer, tubular post having an upper end to which a bicycle seat can be secured. A rigid tube extends partially into the post and carries a diaphragm on its inner end. The diaphragm is engageable with the inner surface of the post and compresses air in an air chamber in advance of the diaphragm when the diaphragm moves toward a closed end of the post. A flexible tube of relatively small diameter extends through a part of the rigid tube. The flexible tube has one end communicating with the air chamber and the other end is outside the rigid tube and is adapted to be coupled to a tire valve for inflating the tire. The flexible tube is of such small diameter and flexibility that no check valve is needed.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: August 11, 1992
    Inventor: Kevin J. Alioto
  • Patent number: 5120200
    Abstract: In accordance with the present invention there is provided a hydraulic drive assembly including a driven member having a hydraulic pump located therein for selectively circulating liquids within the driven member, a drive shaft connected to the driven member for turning the drive shaft of the hydraulic pump, and a control member for selectively varying the flow of fluids from the pump.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: June 9, 1992
    Inventor: James A. Carter, III.
  • Patent number: 4987926
    Abstract: A faucet having a cistern-type pump body with a handle mounted on its upper end, and linkage connected to a rotary mixing valve mounted beneath the pump body such that when the handle is raised, a mixture of hot and cold water is delivered through a conduit mounted in the pump spout.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: January 29, 1991
    Inventor: William L. Simmons
  • Patent number: 4836753
    Abstract: The invention concerns an air blower including a centrifugal fan which is driven by an electric motor. The blower has a two-part blower housing comprising an upper housing which encloses the motor beneath the motor cap and a lower housing. The centrifugal fan is disposed in the chamber between the upper and lower housings. The plenum around the fan leads to an outlet from the blower. An intake shield extends across and blocks undesired entrance of objects into the inlet opening in the bottom of the lower housing. The blower may be seated on a lid across an opening in it. An adapter in the lid receives the intake shield and has its own air inlet to the blower. The orientation of the blower with respect to the lid is rotatable. Cooperating flanges on the blower and the adapter hold the blower to the lid at two rotative locations and a button latch arrangement latches the blower at each of the two arrangements. Between the two latched orientations, the blower may be lifted free of the lid.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: June 6, 1989
    Assignee: Shop-Vac Corporation
    Inventors: Robert C. Berfield, Ronald F. Meland, Craig A. Seasholtz
  • Patent number: 4758130
    Abstract: The invention provides an oil pump as a replacement for the conventional piston type oil pumps used in Triumph motor cycles. The pump of the invention comprises a plurality of plates with a feed pump section between a pair of plates and a scavenge section between another pair of plates. Appropriate bores and galleries are provided between the plates for the pumping of the oil. The pumping sections are formed by rotary lobed pump members.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: July 19, 1988
    Assignee: Autovalves Engineering
    Inventor: Anthony Waterworth
  • Patent number: 4605358
    Abstract: In many aircraft, there are flight control surfaces positioned by mechanical actuation systems that are driven by hydraulic power drive units. There are also devices for transmitting hydraulic power from one aircraft hydraulic system to another in the event that one of the system's pumps fails. An integration of structure to perform both of these functions in a single unit would result in a reduction in cost and weight as well as increased reliability. The integrated power drive and power transfer system has a pair of variable displacement hydraulic devices each in a separate hydraulic circuit and each having a drive shaft connected into a summing gear train connected to an output shaft.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: August 12, 1986
    Assignee: Sundstrand Corporation
    Inventor: Wesley A. Burandt
  • Patent number: 4468222
    Abstract: Intravenous Fluid Pumping System having a controller and a pump controlled by the controller. The controller has a sealed chamber with a flexible membrane covering a portion thereof. An incompressible fluid is disposed in the chamber. A piston member is movable in the chamber causing extension and retraction of the membrane as the piston is moved in and out relative to the chamber. A motor is provided for reciprocating the piston. The pump has a pump body with a pumping chamber therein with one portion of the pump body being covered by a flexible membrane in contact with flexible membrane carried by the sealed chamber of the controller. The pump has an inlet adapter connected to the source of fluid. The pump also has an outlet adapter connected to the patient.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: August 28, 1984
    Assignee: Valleylab
    Inventor: Ingemar H. Lundquist
  • Patent number: 4442661
    Abstract: A rotary lawn mower pump including a rotary blade lawn mower with an upper housing having wheels connected thereto, an above housing motor with a drive shaft through the housing having a rotary blade connection portion beneath the housing, an impeller pump and a pump support fixedly connected to the impeller pump and adjustably connected to the housing. The impeller pump includes an impeller connected to the rotary blade connection portion of the drive shaft for rotation, a pump cover including a lower intake opening and a peripheral discharge positionable to discharge water out through the side of the housing of the lawn mower.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: April 17, 1984
    Inventor: Clifford H. Stuart
  • Patent number: 4415320
    Abstract: A sliding vane type rotary compressor having a rotor, at least one vane slidably mounted on the rotor, a cylinder accomodating the rotor and the vane, and end plates fixed to both ends of the cylinder so as to close vane chambers defined by the vane, the rotor and the cylinder at both sides of the vane chamber. The improvement comprises that the compressor is constructed to meet the following condition:0.025<.theta..sub.s a/Vo<0.080where, a is a value given by the following equation of: ##EQU1## .theta. represents the angle (radian) formed around the center of rotation of the rotor between the end of the vane closer to the cylinder and the cylinder top where the distance between the inner peripheral surface of the cylinder and the outer peripheral surface of the rotor is smallest;.theta..sub.s represents the rotation angle .theta. (radian) at the instant of completion of the suction stroke;Vo represents the volume (cc) of the vane chamber when the rotation angle .theta. is .theta..sub.s ; anda(.theta.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: November 15, 1983
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Teruo Maruyama, Shinya Yamauchi, Shiro Yamamura, Yoshiyuki Morikawa
  • Patent number: 4076460
    Abstract: Portable lawn care apparatus is disclosed which includes attachment assemblies for converting to a mobile vacuum, a shredder/chipper, a blower or a stationary vacuum with a hand-operated flexible hose.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: February 28, 1978
    Inventor: Earl O. Roof