公开(公告)号：NO170237C

公开(公告)日：1992-09-23

申请号：NO892659

申请日：1989-06-27

Applicant: APPLIED POWER INC

Inventor： SCHMALE WILHELM FREDERIK

IPC: F15B11/00 ,  A61G7/00 ,  A61G7/012 ,  A61G7/018 ,  F15B1/02 ,  F15B1/027

Abstract: Hydraulic actuating unit (4), in particular for raising a load, such as a hospital bed, comprising a reservoir (13) for hydraulic fluid and a hydraulic piston cylinder device (10), the cylinder of the latter having its end connected to the reservoir (13) through a supply conduit (11) containing a hydraulic plunger pump (12) with section and pressure valve means (12a, 12b) and through a return conduit (18) containing an orifice (19) and a normally closed relieve valve (20) respectively, a branch conduit (14) leading to a hydraulic liquid accumulator (15) being branched off from said supply conduit (11) at a location between the cylinder (10) and the pressure valve means (12b), a check valve (16) being provided in said supply conduit (11) at a location between the branch conduit (11) and said cylinder (10), while a pressure dependent orifice (17) is provided between said check valve (16) and said branch conduit (14) to said accumulator (15). Special valve means (21) are provided to avoid the accumulator (15) to be completely discharged when actuating the relief valve (20) and also to prevent the accumulator (15) from delivering hydraulic fluid to the actuating unit (4) in case of a decrease of the load.

公开(公告)号：CA1302203C

公开(公告)日：1992-06-02

申请号：CA579109

申请日：1988-10-03

Applicant: APPLIED POWER INC

Inventor： JANECKE JAMES P

IPC: F15B11/05 ,  F15B13/04 ,  F15B13/042

Abstract: An individual segment flow regulator is shown having a two landed spool and two landed bore, all with the same nominal diameter, a plug, a spring and a sensing passage from the main spool of the valve. Supply oil entering between the two lands of the bore is separated from a sensing pressure by one spool land which is slidable within the bore. The other spool land meters the supply fluid. The metering land of the regulator spool opens away from the valve bore land to allow supply fluid through and can shut off the supply. A spring chamber above the spool senses the load pressure which opens the metering spool, thereby increasing the flow and therefore the pressure drop across the main spool area opening. Feedback pressure developed at the bottom of the metering land of the spool is used to close down the regulator spool as the flow, and therefore the pressure drop, across the main spool increases beyond the pre-load force of the bias spring. The feedback land at the bottom of the spool is also the metering land that controls supply pressure to the regulated pressure.

公开(公告)号：CA1299208C

公开(公告)日：1992-04-21

申请号：CA572360

申请日：1988-06-30

Applicant: APPLIED POWER INC

Inventor： MILLER DOUGLAS P

IPC: B23Q3/06 ,  B25B5/06

Abstract: A powered work clamping device including a housing with an upper and lower chamber and an intermediate chamber communicating with the upper and lower chambers, an upper and lower piston respectively residing in the upper and lower chambers, and wherein the lower piston has a section with reduced diameter slidably and rotatably operating in the intermediate chamber, an index rod projects from the lower piston into an index bore in the upper piston and a piston rod connected thereto. The piston rod projects from the housing and is secured to a work-engaging head. The head is rotatable and independently extendable depending upon operation of the upper and lower pistons and means for rotating the lower piston and actuated upon operation of a check valve served by one of two independently actuated two-stage directional control valves.

公开(公告)号：DE3774466D1

公开(公告)日：1991-12-19

申请号：DE3774466

申请日：1987-04-02

Applicant: APPLIED POWER INC

Inventor： FROHN GUSTAV

IPC: B25B21/00 ,  B25B23/00

Abstract: The power-driven screw driver has a housing, with an adjustable support foot (10), so that during a screwing movement, a piston pivots a clamp lever (4) with a ratchet-type clamp wheel (6), and any counter momentum is deflected to an external abutment. The support foot is inserted into a deep bore (2) in the housing (1), which is pref. shaped like e.g. a bone, and extends through the housing at right angles to the movement direction of the working piston (5) for the clamp lever movement. Clamp screws (34) permit the foot to be fixed at any point of the bore.

公开(公告)号：AU7567691A

公开(公告)日：1991-11-27

申请号：AU7567691

申请日：1991-03-15

Applicant: APPLIED POWER INC

Inventor： STOBBS THOMAS J ,  PATEL KISHOR J ,  FRITZ FRANK M ,  KNUTSON DALE A ,  JANECKE JAMES P

IPC: B60G17/056 ,  F16F9/46 ,  F16K31/06

公开(公告)号：AU7169491A

公开(公告)日：1991-09-03

申请号：AU7169491

申请日：1990-12-24

Applicant: APPLIED POWER INC

Inventor： PATEL KISHOR J ,  STOBBS THOMAS J

IPC: B60G17/08 ,  B60T8/36 ,  B60T15/02 ,  F16F9/46 ,  F16F9/50 ,  F16K31/06 ,  G05D16/20

Abstract: A proportional pressure control valve is disclosed which may be used for uni-directional or bi-directional fluid flow. An electromagnetic driver mounted in a driver cavity of a housing produces a magnetic flux path in response to a variable input current. The magnitude of the flux path is substantially proportinal to the input current. The flux path passes through an armature which is movable within the driver cavity. The armature is connected to a metering spool so that the two move in unison. The metering spool is movable within a main bore between a sealing position and an infinite number of open positions. The position of the metering spool determines the magnitude of fluid communication between pressure ports. A feedback section of the housing establishes a pressure feedback force which impacts on the position of the metering spool and the armature. The valve may also include a spring for biasing the metering spool to a fail-safe position within the housing. The proportional pressure control valve can be incorporated into a damper of a vehicle suspension system where the input current is governed by an electronic control unit of the vehicle. The electronic control unit may be responsive, in part, to the position of the suspension system through the use of a position feedback sensor.

公开(公告)号：DE3862047D1

公开(公告)日：1991-04-25

申请号：DE3862047

申请日：1988-02-12

Applicant: APPLIED POWER INC

Inventor： PRESLEY GLEN T

IPC: A01B69/02 ,  A01C7/08 ,  F15B11/20 ,  F15B13/07

Abstract: An automatic, hydraulically actuated, sequencing valve 25 for use with a pair of hydraulic actuators (e.g. double acting hydraulic cylinders) includes a valve body 40 having a cylindrical bore 45 therein. Cam members 49 and 50 at either end of the bore are engaged by pins 62, 63 on the ends of a cylindrical spool 47, thereby rotating the spool 30 degrees each time it engages one of the cam members. A third cam member 78 incorporated into the spool alternately locks open one of a pair of check valves 57, 59 as said spool is pressure shifted between the two bore cam members. The third cam member operates a locking system which permits only one of the two hydraulic cylinders to operate at a time and in sequence.

公开(公告)号：DE3904893A1

公开(公告)日：1990-08-23

申请号：DE3904893

申请日：1989-02-17

Applicant: APPLIED POWER INC

Inventor： OUWEJAN JOSEPHUS JAN

IPC: F16L37/56

Abstract: The subject matter of the invention is a coupling device for the releasable connection of fluid lines in or on two components which can be changed in position relative to one another, in the case of which the line connection is carried out by the introduction of pairs of coupling elements which are guided together along upwardly directed axes. For better protection of the lower coupling elements (1) against the penetration of foreign bodies from the surroundings, at least one rail (3, 4) is arranged, according to the invention, in addition to the movement path for the lower coupling elements (1) and connected to the lower coupling elements (1) for joint movement towards the upper coupling elements (2) or away from the same, said rail first of all running to the sides of the lower coupling elements (1) and parallel to the displacement axis (A) thereof and then being bent off transversely thereto, and, moreover, a covering plate (5) which is fixed at one end (7) and consists of a resilient material is guided in or on the rail (3, 4) such that, during the movement of the lower coupling elements (1) towards the upper coupling elements (2), it is transferred out of the bent-off rest position, covering over the opening of the lower coupling elements (1), into an at least largely rectilinear operating position which releases the lower coupling elements (1) for their connection to the upper coupling elements (2).

公开(公告)号：IT9020604D0

公开(公告)日：1990-06-11

申请号：IT2060490

申请日：1990-06-11

Applicant: APPLIED POWER INC

Inventor： TEUNIS PIJPERS

IPC: B25B1/24 ,  B25B5/06 ,  B29C45/17

公开(公告)号：NL8702269A

公开(公告)日：1989-04-17

申请号：NL8702269

申请日：1987-09-23

Applicant: APPLIED POWER INC

IPC: B60J7/12 ,  F15B15/26

Abstract: A piston-cylinder device (6) powered by a pressurized fluid (11) and having a mechanical locking means (14) for the piston (13). The locking means (14) is alternatively actuated into and out of locking position by the pressurized fluid (11).