US20070020125A1 - Motor with eccentric part and pump device using the same - Google Patents

Motor with eccentric part and pump device using the same Download PDF

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Publication number
US20070020125A1
US20070020125A1 US10/569,712 US56971206A US2007020125A1 US 20070020125 A1 US20070020125 A1 US 20070020125A1 US 56971206 A US56971206 A US 56971206A US 2007020125 A1 US2007020125 A1 US 2007020125A1
Authority
US
United States
Prior art keywords
eccentric
rotational shaft
axis
ball bearing
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/569,712
Other languages
English (en)
Inventor
Makio Oyama
Hiroaki Atsushi
Manabu Saitoh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Corp
Original Assignee
Bosch Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Corp filed Critical Bosch Corp
Assigned to BOSCH CORPORATION reassignment BOSCH CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ATSUSHI, HIROAKI, OYAMA, MAKIO, SAITOH, MANABU
Publication of US20070020125A1 publication Critical patent/US20070020125A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/075—Means for converting reciprocating motion into rotary motion or vice versa using crankshafts or eccentrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4018—Pump units characterised by their drive mechanisms
    • B60T8/4022—Pump units driven by an individual electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0413—Cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50—Other types of ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to a motor having an eccentric portion which includes a rotational shaft which has an axis and supports an armature and a commutator thereon, and an eccentric portion which is eccentrically configured with respect to the axis on the rotational shaft, wherein the eccentric portion constitutes an output portion for driving an external equipment such as a pump in a hydraulic brake system of an automobile, for example. Further, the present invention also relates to a pump device which uses such a motor.
  • a rotational shaft is machined so as to form an eccentric shaft portion on a portion thereof, and a needle bearing or a ball bearing is joined to an outer periphery of the eccentric shaft portion.
  • the needle bearing withstands a high load compared to the ball bearing.
  • the ball bearing is disadvantageous in the miniaturization and the reduction of weight of the motor or the reduction of the vibrations and operation sounds of the motor.
  • patent literature 1 discloses a motor which uses the needle bearing
  • patent literature 2 discloses a motor which uses a ball bearing.
  • the inventors have found that, conventionally, there has been mainly adopted a design concept that, to obtain the eccentric portion, a portion of the rotational shaft is eliminated by applying cutting to a portion of the rotational shaft thus forming an eccentric shaft portion in the eliminated portion. It is inevitable that such shaft cutting pushes up a cost. Accordingly, the inventors have challenged a unique idea that instead of forming the rotational shaft per se in an eccentric manner, the eccentric structure is provided to the whole structure including the ball bearing.
  • an eccentric portion formed on a rotational shaft is constituted as follows. That is, in place of cutting a side of a rotational shaft, an eccentric ball bearing is directly joined to a shaft portion which is constituted of a portion of the straight rotational shaft so as to obtain an eccentric portion.
  • the eccentric portion is constituted of a shaft portion (portion of the rotational shaft) having an axis equal to an axis of the rotational shaft and the eccentric ball bearing which is joined to the shaft portion. It is most preferable that an inner side of the eccentric ball bearing having a smaller diameter is formed in an eccentric configuration.
  • the eccentric ball bearing is constituted of an inner lace which is arranged eccentric with respect to the axis of the rotational shaft, an outer lace which is positioned outside the inner lace and has an axis equal to the above-mentioned axis, and balls which are supported between the outer lace and the inner lace.
  • an armature including a coil winding portion, a commutator for supplying electricity to the armature, and the eccentric portion which constitutes an output portion are arranged in this order.
  • the eccentric portion is served for driving a pump for a hydraulic brake system of an automobile (an automatic brake served not only for a usual anti-skid control but also for a traction control and, further, for the safe traveling, the collision prevention and the like).
  • the armature and the commutator are housed in a motor housing and the motor housing is mounted on one side of a control unit of the hydraulic brake system.
  • the ball bearing has the simple constitution compared to a needle bearing (for example, while a stop bushing which supports a side is necessary in the needle bearing, the stop bushing is unnecessary in the ball bearing) and hence, frictions are small whereby a motor current is low. Further, structurally, a length of the ball bearing in the rotational axis direction is short and, at the same time, the ball-bearing becomes light-weighted (particularly, a mass of the eccentric portion becomes light-weighted) and hence, the vibrations and noises can be suppressed.
  • the pump device when the present invention is grasped in a form of a pump device, the pump device is configured such that the above-mentioned particular motor is used as a drive source and a plunger is brought into contact with an outer periphery of the eccentric ball bearing (that is, an outer lace of the eccentric ball bearing).
  • the pump device along with a linear reciprocal motion of the plunger, repeats sucking and discharging of a working liquid.
  • the plungers are usually provided in a pair and are arranged at positions which are spaced apart from each other by 180° in the circumferential direction of the eccentric ball bearing.
  • FIG. 1 is a front view of a profile of an embodiment of a motor according to the present invention.
  • FIG. 2 is a cross-sectional structural view of the motor shown in FIG. 1 .
  • FIG. 3 is a side view showing one example of an eccentric ball bearing.
  • FIG. 4 is a cross-sectional view taken along a line 4 - 4 of FIG. 3 .
  • the present invention is basically directed to a motor which has a specific eccentric portion, those who are skilled in the art will understand that the invention is applicable to a pump device which uses the motor as a drive source.
  • the DC motor 10 includes a motor housing 12 which defines a columnar inner space therein.
  • a height of the motor housing 12 is approximately half of a diameter of the motor housing 12 .
  • the motor housing 12 is constituted of a housing body 121 having a U-shape cross section and an end plate 122 which closes one end of the housing body 121 .
  • a flange portion 122 f which is flared outwardly is formed on a center portion of the end plate 122 .
  • a receiving portion 121 r is formed on a center portion of the housing body 121 by press forming.
  • the receiving portion 121 r has a height equal to heights of other portions of the housing body 121 (that is, coplanar).
  • the inside of the receiving portion 121 r and the inside of the flange portion 122 f form portions which support first and second bearings 21 , 22 .
  • These two bearings 21 , 22 are integrally formed with the motor housing 12 and such a constitution rotatably supports a rotational shaft 30 of the motor 10 .
  • the rotational shaft 30 is positioned at a center portion of the motor housing 12 , wherein one end of the rotational shaft 30 is supported on the first bearing 21 arranged inside the receiving portion 121 r of the housing body 121 , an opposite side of the rotational shaft 30 has a midst portion thereof supported on the second bearing 22 , and a portion of the rotational shaft 30 projecting from the second bearing 22 penetrates the end plate 122 and projects to the outside of the motor housing 12 .
  • the rotational shaft 30 is formed of a straight so-called round bar which extends from a first end portion 31 on a side supported by the first bearing 21 to a second end portion 32 on a side projected to the outside. That is, the rotational shaft 30 has an equal axis over a total length thereof from the first end portion 31 to the second end portion 32 .
  • an eccentric ball bearing 50 is joined to and supported on a shaft portion which is positioned at an outside portion of the motor housing 12 .
  • FIG. 3 and FIG. 4 clearly show the eccentric ball bearing 50 .
  • the eccentric ball bearing 50 is constituted of an eccentric inner lace 52 , an outer lace 54 which surrounds an outside of the inner lace 52 , and a plurality of balls 55 which are positioned between the inner lace 52 and the outer lace 54 .
  • the respective balls 55 are arranged in the circumferential direction between the inner lace 52 and the outer lace 54 and retainers 56 at both sides retain the balls 55 . Accordingly, the basic constitutional elements per se of the eccentric ball bearing 50 are substantially equal to the basic constitutional elements of a usual ball bearing.
  • the center of an inner-peripheral-side circle 54 i and the center of an outer-peripheral-side circle 54 o are equal with respect to the outer lace 54
  • the center of an inner-peripheral-side circle 52 i and the center of an outer-peripheral-side circle 52 o are eccentric from each other by a distance d with respect to the inner lace 52 .
  • the eccentric distance (that is, eccentricity) is, for example, slightly less than 1 mm.
  • the eccentric ball bearing 50 including the inner lace 52 when the eccentric ball bearing 50 including the inner lace 52 is joined to the shaft portion of the rotational shaft 30 in a close fit state, along with the rotation of the rotational shaft 30 , the eccentric portion including the eccentric ball bearing 50 performs a reciprocal linear motion with a stroke of a size of 2d in the direction perpendicular to the axis of the rotational shaft 30 . Due to such a motion, it is possible to drive a plunger pump 100 .
  • a plunger is brought into contact with an outer periphery of the eccentric ball bearing 50 and, in response to the reciprocal linear motion of the eccentric ball bearing 50 , the plunger per se also performs the similar reciprocal linear motion thus generating a pumping action.
  • a plurality of magnets 60 is mounted on an inner peripheral wall surface of the housing body 121 having a U-shaped cross section.
  • the respective magnets 60 generate a magnetic field together with the housing body 121 which functions as a yoke.
  • an armature 70 is arranged in an inner space surrounded by the magnets 60 .
  • the armature 70 includes a stacked core and a coil winding portion which is wound around the laminated core.
  • the armature 70 per se is integrally supported on the rotational shaft 30 and is rotated together with the rotational shaft 30 . Due to a cooperative action of an electric current which flows the coil winding portion of the armature 70 and the magnetic field which is generated by the magnet 60 , a given force acts on the armature 70 and the force generates a rotating force of the motor 10 .
  • a commutator 80 is arranged at a portion adjacent to the armature 70 .
  • the commutator 80 is integrally supported on the rotational shaft 30 between the armature 70 and a second bearing 22 .
  • the commutator 80 includes a cylindrical insulation ring 82 which is formed of a resin molded product and a plurality of commutator members 84 which are assembled to an outer periphery of the insulation ring 82 .
  • the insulation ring 82 is made of an electrically insulating resin material, while a plurality of commutator members 84 are made of a conductive metallic material such as copper.
  • a riser 84 r which is formed by folding one end of the commutator members 84 is a portion which catches respective commutator members 84 and end portions of coils of the respective coil winding portions of the armature 70 .
  • the commutator 80 is connected with an external circuit along with a brush for supplying electricity.
  • a cable 90 which is extended from a lower portion of the motor housing 12 is provided for connecting the brush and the external circuit for supplying electricity.
  • the armature 70 is formed in a state that a center portion thereof is recessed and respective parts of the first bearing 21 and the commutator 80 which are arranged close to the recessed portion are inserted into the recessed portions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Ocean & Marine Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Dc Machiner (AREA)
US10/569,712 2003-09-02 2004-09-02 Motor with eccentric part and pump device using the same Abandoned US20070020125A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2003310446 2003-09-02
JP2003-310446 2003-09-02
PCT/JP2004/012740 WO2005025033A1 (ja) 2003-09-02 2004-09-02 偏心部をもつモ−タおよびそれを用いたポンプ装置

Publications (1)

Publication Number Publication Date
US20070020125A1 true US20070020125A1 (en) 2007-01-25

Family

ID=34269647

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/569,712 Abandoned US20070020125A1 (en) 2003-09-02 2004-09-02 Motor with eccentric part and pump device using the same

Country Status (6)

Country Link
US (1) US20070020125A1 (ko)
EP (1) EP1646129A4 (ko)
JP (1) JPWO2005025033A1 (ko)
KR (1) KR100705882B1 (ko)
CN (1) CN1846340A (ko)
WO (1) WO2005025033A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080146394A1 (en) * 2005-08-23 2008-06-19 Keiper Gmbh & Co. Kg Gear stage
US20170149304A1 (en) * 2015-11-23 2017-05-25 Johnson Electric S.A. Actuator and Pump Using the Actuator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008208943A (ja) * 2007-02-27 2008-09-11 Jtekt Corp ターボ分子ポンプおよびタッチダウン軸受
KR102538580B1 (ko) * 2016-01-25 2023-05-31 엘지이노텍 주식회사 모터, 브레이크 시스템 및 이를 포함하는 차량

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1162512A (en) * 1915-01-21 1915-11-30 Faustin Prinz Eccentric ball-bearing reciprocating device.
US4831277A (en) * 1987-08-11 1989-05-16 Christopher Nicholas S Remote power system
US5437220A (en) * 1994-05-24 1995-08-01 Cheng; Chi Ball bearing piston
US5620311A (en) * 1994-12-20 1997-04-15 Robert Bosch Gmbh Piston pump having a pump casing to which a pump motor is attached
US6179580B1 (en) * 1996-10-12 2001-01-30 Robert Bosch Gmbh Motor-pump arrangement
US20020090306A1 (en) * 2000-12-21 2002-07-11 Robert Bosch Gmbh Pump assembly for a hydraulic vehicle brake system
US6617745B1 (en) * 1997-03-10 2003-09-09 Continental Teves Ag & Co.Ohg Engine pump unit
US20050245182A1 (en) * 2004-04-13 2005-11-03 Deshpande Uday S Low profile electric sander

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0559029U (ja) * 1992-01-16 1993-08-03 日本精工株式会社 プランジャ等の往復駆動装置
JPH08126248A (ja) * 1994-10-20 1996-05-17 Koyo Seiko Co Ltd 油圧ポンプ用電動モータ
JPH0958438A (ja) * 1995-08-21 1997-03-04 Akebono Brake Ind Co Ltd 電動モータとポンプとを備えた油圧ユニット
JPH11103559A (ja) * 1997-09-26 1999-04-13 Aisin Seiki Co Ltd 駆動装置
DE19928480A1 (de) * 1999-06-22 2000-12-28 Bosch Gmbh Robert Nadellager und Pumpeneinheit mit einem Nadellager
JP2001309608A (ja) * 2000-04-27 2001-11-02 Asmo Co Ltd モータ

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1162512A (en) * 1915-01-21 1915-11-30 Faustin Prinz Eccentric ball-bearing reciprocating device.
US4831277A (en) * 1987-08-11 1989-05-16 Christopher Nicholas S Remote power system
US5437220A (en) * 1994-05-24 1995-08-01 Cheng; Chi Ball bearing piston
US5620311A (en) * 1994-12-20 1997-04-15 Robert Bosch Gmbh Piston pump having a pump casing to which a pump motor is attached
US6179580B1 (en) * 1996-10-12 2001-01-30 Robert Bosch Gmbh Motor-pump arrangement
US6617745B1 (en) * 1997-03-10 2003-09-09 Continental Teves Ag & Co.Ohg Engine pump unit
US20020090306A1 (en) * 2000-12-21 2002-07-11 Robert Bosch Gmbh Pump assembly for a hydraulic vehicle brake system
US20050245182A1 (en) * 2004-04-13 2005-11-03 Deshpande Uday S Low profile electric sander

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080146394A1 (en) * 2005-08-23 2008-06-19 Keiper Gmbh & Co. Kg Gear stage
US7585245B2 (en) * 2005-08-23 2009-09-08 Keiper Gmbh & Co. Kg Gear stage
US20170149304A1 (en) * 2015-11-23 2017-05-25 Johnson Electric S.A. Actuator and Pump Using the Actuator
US10879762B2 (en) * 2015-11-23 2020-12-29 Johnson Electric International AG Actuator and pump using the actuator

Also Published As

Publication number Publication date
JPWO2005025033A1 (ja) 2007-11-08
KR100705882B1 (ko) 2007-04-09
WO2005025033A1 (ja) 2005-03-17
EP1646129A4 (en) 2009-07-01
EP1646129A1 (en) 2006-04-12
KR20060064062A (ko) 2006-06-12
CN1846340A (zh) 2006-10-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BOSCH CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OYAMA, MAKIO;ATSUSHI, HIROAKI;SAITOH, MANABU;REEL/FRAME:017686/0046

Effective date: 20051222

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION