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公开(公告)号：CA2181375A1
公开(公告)日：1995-07-27
申请号：CA2181375
申请日：1995-01-19
Applicant: APPLIED POWER INC
Inventor： MILLER DOUGLAS P
IPC: F15B1/26
Abstract: A hydraulic fluid reservoir (10) contains an extensible bladder (50) which has its exterior (54) exposed to the fluid and its interior (52) vented to the exterior of the reservoir. The interior (52) of the bladder (50) is sealed from the hydraulic fluid in the reservoir (10). Depletion of the fluid from the reservoir (10) results in distension of the bladder (50) and replenihsing the fluid to the reservoir collapses the bladder (50). The bladder (50) is pleated and a tie-rod (18) which holds the reservoir (10) together extends through the bladder (50).
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公开(公告)号：GB2278561A
公开(公告)日：1994-12-07
申请号：GB9406701
申请日：1994-04-05
Applicant: APPLIED POWER INC
Inventor： MILLER DOUGLAS P
Abstract: A retainer for the drive shaft of a hydraulic torque wrench has an eccentric pivotably connected to the free end of the shaft which can be pivoted between an unlocked position and one or more locked positions and locked in any of the positions with a plunger. In the unlocked position, the eccentric does not overlap a bearing of the wrench so that the shaft and eccentric can be withdrawn axially from the wrench drive head. In the locked position(s), the eccentric overlaps and abuts an axial face of the bearing so that the eccentric cannot be drawn into the bearing, thereby securing the shaft against axial movement out of the wrench drive head in the direction from the eccentric toward the bearing.
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13.发明专利
公开(公告)号：CA1063871A
公开(公告)日：1979-10-09
申请号：CA283992
申请日：1977-08-03
Applicant: APPLIED POWER INC
Inventor： MILLER DOUGLAS P
Abstract: FLUID OPERATED HYDRAULIC PUMP INCLUDING AN IMPROVED HYDRAULIC FLUID PRESSURE RELEASE ASSEMBLY A fluid operated hydraulic pump of the type using air pressure to produce high pressure hydraulic fluid whereby hydraulic fluid can be conveyed to a hydraulic tool or the like, and wherein the hydraulic pump includes an easily actuated release valve to facilitate return of high pressure hydraulic fluid from the hydraulic tool to the fluid reservoir of the hydraulic pump and including a treadle having a curvilinear cam surface for engaging the release valve to actuate it. The hydraulic pump also includes a continuously open hydraulic fluid pressure passage connected to the high pressure output passage of the hydraulic pump and in communication with the release valve bore to facilitate fluid pressure on a shoulder of the release valve thereby maintaining a balance of fluid pressure force on the release valve and facilitating axial movement of the valve with application of only a small axial force.
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公开(公告)号：AU2744377A
公开(公告)日：1979-02-01
申请号：AU2744377
申请日：1977-07-29
Applicant: APPLIED POWER INC
Inventor： MILLER DOUGLAS P
IPC: F01N1/08 , F01B11/00 , F01B29/00 , F01L25/06 , F01N13/00 , F04B9/127 , F15B15/00 , F15B15/14 , F04B21/00 , F04B9/12 , F04B19/22 , F04B21/02 , F04B23/02
Abstract: A fluid operated hydraulic pump of the type using air pressure to produce high pressure hydraulic fluid wherein an air pressure driven motor and a hydraulic pump are positioned in adjacent axially aligned relationship and the air motor includes a reciprocating piston which drives the hydraulic pump. The air motor includes an exhaust passage having an expansion chamber therein for receiving exhaust air flow and including a plurality of baffles therein, the expansion chamber and the baffles functioning in combination to reduce the noise generated by the air motor without the use of other muffling material thereby avoiding undue back pressure in the air motor and increasing the speed and efficiency and operation of the air motor and the pump.
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公开(公告)号：AU718537B2
公开(公告)日：2000-04-13
申请号：AU3576497
申请日：1997-07-16
Applicant: APPLIED POWER INC
Inventor： STEBER GEORGE R , KNUTSON DALE A , MILLER DOUGLAS P
IPC: B25B21/00 , B25B23/145 , B25F5/00 , F04B49/10 , F15B11/028 , F04B49/06
Abstract: A system for tightening a threaded fastener with a hydraulic wrench has a pumping unit which measures parameters representative of the torque applied to the fastener and the angle of advance of the fastener, remote from the wrench. The pump measures pressure as a parameter representative of torque and measures flow rate, pump speed (for a fixed displacement pump), or time (for a fixed displacement pump driven at constant speed) as a parameter representative of the angle of advance of the fastener. A ratchet-type hydraulic wrench is used, and the pressure versus angle data produced in tightening a fastener is manipulated to discard irrelevant portions and smooth relevant portions to provide data representative of torque and angle during the tightening process from which to determine a final stopping parameter for terminating tightening. The system also has a calibration fixture for determining the volumetric rate of angle advance for a given wrench. Any tightening methodology dependent upon angle may be used to practice the invention, or the invention may be applied to monitor the tightening process.
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Patent Agency Ranking
公开(公告)号：AU3800597A
公开(公告)日：1998-02-09
申请号：AU3800597
申请日：1997-07-15
Applicant: APPLIED POWER INC
Inventor： SCHNELL RICHARD E , MILLER DOUGLAS P , GRIMES JAMES F , YEKO PATRICK J
Abstract: A travelling clamp unit of the type for extending and retracting a T-head clamping cylinder into and out of a T-slot of a press has a main frame which supports clamping cylinder drive means and the clamping cylinder when it is in a parked position in which it is retracted from the T-slot of the press. The main frame has rails which support the clamping cylinder T-head in the parked position and which are removable from the main frame so that the T-head can be dropped out of the bottom end of the main frame for removing the clamping cylinder from the travelling clamp unit.
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公开(公告)号：CA2260980A1
公开(公告)日：1998-01-22
申请号：CA2260980
申请日：1997-07-16
Applicant: APPLIED POWER INC
Inventor： STEBER GEORGE R , KNUTSON DALE A , MILLER DOUGLAS P
IPC: B25B21/00 , B25B23/145 , B25F5/00 , F04B49/10 , F15B11/028
Abstract: A system (10) for tightening a threaded fastener with a hydraulic wrench (14) has a pumping unit (12) which measures parameters representative of the torque applied to the fastener and the angle of advance of the fastener, remote from the wrench (14). The pump (12) measures pressure as a parameter representative of torque and measures pump speed as a parameter representative of the angle of advance of the fastener. A ratchet-type hydraulic wrench is used, and the pressure versus angle data produced in tightening a fastener is manipulated to discard irrelevant portions and smooth relevant portions to provide data representative of torque and angle during the tightening process from which to determine a final stopping parameter for terminating tightening. The system also has a calibration fixture (19) for determining the volumetric rate of angle advance for a given wrench (14). Any tightening methodology dependent upon angle may be used to practice the invention, or the invention may be applied to monitor the tightening process.
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公开(公告)号：GB2278561B
公开(公告)日：1996-05-15
申请号：GB9406701
申请日：1994-04-05
Applicant: APPLIED POWER INC
Inventor： MILLER DOUGLAS P
Abstract: A retainer for the drive shaft of a hydraulic torque wrench has an eccentric pivotably connected to the free end of the shaft which can be pivoted between an unlocked position and one or more locked positions and locked in any of the positions with a plunger. In the unlocked position, the eccentric does not overlap a bearing of the wrench so that the shaft and eccentric can be withdrawn axially from the wrench drive head. In the locked position(s), the eccentric overlaps and abuts an axial face of the bearing so that the eccentric cannot be drawn into the bearing, thereby securing the shaft against axial movement out of the wrench drive head in the direction from the eccentric toward the bearing.
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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
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.
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公开(公告)号：MX145712A
公开(公告)日：1982-03-25
申请号：MX17031777
申请日：1977-08-23
Applicant: APPLIED POWER INC
Inventor： MILLER DOUGLAS P
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