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公开(公告)号：US3626505A
公开(公告)日：1971-12-07
申请号：US3626505D
申请日：1969-08-28
Applicant: DRESSER IND
Inventor： DOUGLAS BOBBY L
Abstract: A wire line stripper for use in conjunction with the movement of wire line supported tools into and out of well bores. The stripper includes a housing encircling the wire line, a sealing element located in the housing and having a surface thereon in engagement with the wire line. The sealing element is constructed so that the pressure responsive means continues to maintain the seal member in sealing engagement with the wire line even though considerable wear occurs on the seal surface that is in engagement with the wire line.
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公开(公告)号：US3612596A
公开(公告)日：1971-10-12
申请号：US3612596D
申请日：1969-10-16
Applicant: DRESSER IND
Inventor： BRACKIN WAYNE L
IPC: B66C1/34
CPC classification number: B66C1/34
Abstract: A lock is provided which fixes the hook on a traveling block with respect to the spring housing and block, at the same time allowing the hook to travel in a vertical direction the customary length of the spring within the housing. A pivoted L-shaped member engages an index ring by a downward pull and also disengages the index ring by a downward pull, thus allowing for ease of utility.
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公开(公告)号：US3611799A
公开(公告)日：1971-10-12
申请号：US3611799D
申请日：1969-10-01
Applicant: DRESSER IND
Inventor： DAVIS MIKE
CPC classification number: E21B49/10
Abstract: A MULTIPLE CHAMBER SAMPLING SYSTEM FOR OBTAINING FLUID SAMPLES FROM EARTH FORMATIONS WHEREIN A BOREHOLE EXPLORING UNIT SUPPORTED FOR MOVEMENT THROUGH THE BOREHOLE IS PROVIDED WITH SPACED MEANS FOR ISOLATING BOREHOLE WALL FORMATION PORTIONS FROM BOREHOLE FLUIDS. A FLOW CHANNEL SELECTIVELY INTERCONNECTS THE ISOLATION MEANS AND HAS A PUMP THEREIN FOR PRODUCING FLUID FLOW FROM THE FORMATION THROUGH THE FLOW CHANNEL BACK INTO THE FORMATION. ENGAGING UNITS CONTACT THE FORMATIONS AND FLUID THEREIN IS PUMPED FROM ONE FORMATION TO ANOTHER OR FROM ONE PORTION OF A FORMATION TO ANOTHER PORTION OF THE SAME FORMATION. A SET OF VALVES CONTROLLABLE FROM THE SURFACES PROVIDES MEANS FOR FILLING THE MULTIPLE SAMPLING CHAMBERS AND TRANSDUCERS PROVIDE INDICATIONS OF VARIOUS PHYSICAL CHARACTERISTICS OF THE FLUID. MEANS ARE PROVIDED FOR DETERMINING THE EXPLORING UNIT''S DEPTH IN THE BOREHOLE.
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公开(公告)号：US3608373A
公开(公告)日：1971-09-28
申请号：US3608373D
申请日：1968-11-04
Applicant: DRESSER IND
Inventor： YOUMANS ARTHUR H
Abstract: A WELL LOGGING INSTRUMENT ADAPTED FOR TRANSVERSING AN EARTH BOREHOLE HAS A NEUTRON PAD MEMBER ON ONE SIDE OF THE INSTRUMENT WHICH IS NORMALLY SPRING-FORCED INTO CONTACT WITH THE BOREHOLE WALL DURING SUCH A TRANSVERSAL. THE INSTRUMENT HAS ON ITS OPPOSITE SIDE AN ACOUSTIC PAD WHICH IS ALSO NORMALLY SPRING-FORCED INTO CONTACT WITH THE BOREHOLE WALL DURING SUCH A TRANSVERSAL. THE ACOUSTIC PAD HAS AN ACOUSTIC TRANSMITTING TRANSDUCER AND A PAIR OF ACOUSTIC RECEIVING TRANSDUCERS FOR PRODUCING AN ACOUSTIC TIME INTERVAL MEASUREMENT. EACH TRANSDUCER IS MOUNTED ON AN ACUTE ANGLE FROM THE LONGITUDINAL AXIS OF THE ELONGATED INSTRUMENT HOUSING AND IS MOUNTED IN A FLUID MEDIUM CHOSEN TO MATCH THE ACUTE ANGLE SO THAT A STEEP RISING WAVE FRONT PASSES THROUGH THE FORMATION SURROUNDING THE BOREHOLE AND PRODUCES A STEEP RISING SIGNAL AT THE RESPECTIVE RECEIVERS, THEREBY PERMITTING AN ACCURATE MEASUREMENT OF ACOUSTIC WAVE TRAVEL TIME FROM TRANSMITTER TO FIRST RECEIVER AND FROM FIRST TO SECOND RECEIVER. THE NEUTRON PAD, HAVING A CAPSULED NEUTRON SOURCE AND AN EPITHERMAL NEUTRON DETECTOR, RESPONDS TO VARIATIONS IN FORMATION POROSITY AND TO THE THICKNESS AND CONSTITUENCY OF MUD AND MUD CAKE INTERVENING BETWEEN THE PAD AND THE FORMATION. THE ACOUSTIC PAD SERVES TO INDICATE THE EXTENT OF THE EFFECT ON THE NEUTRON-DERIVED POROSITY MEASUREMENT DUE TO THE MUD AND MUD CAKE AND PERMITS A CORRECTED POROSITY TO BE DERIVED AND RECORDED.
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公开(公告)号：US3599803A
公开(公告)日：1971-08-17
申请号：US3599803D
申请日：1969-10-02
Applicant: DRESSER IND
Inventor： COPE GEOFFREY WILTON
CPC classification number: B61G5/08
Abstract: An improvement in an automatic coupling system for a railway car which is equipped with a mechanical knuckle-type coupler, a main air line adapted to be connected to a corresponding air line of another railway car, a main valve interposed in the main air line, and means for actuating the main valve responsive to intentional uncoupling of the railway car. The improvement, in its preferred form, takes the form of an extensible pneumatic piston and cylinder assembly, one part of which is attached to the main body of mechanical coupler and the other part of which is operably connected to the operating mechanism of the coupler for opening of the knuckle of the coupler. The piston and cylinder assembly is operatively associated with the means for actuating the main valve so that upon actuation of the main valve during intentional uncoupling of the railway car, air will be admitted to the piston and cylinder assembly. Upon separation of the railway cars, air is bled from the system allowing piston and cylinder assembly to retract leaving the coupler open and ready for coupling. The bleeding of the cylinder and piston assembly is preferably effected through a pneumatic time delay circuit to assure that the assembly has been fully extended upon uncoupling of the railway car before operating pressure is lost in the cylinder and ram assembly.
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Patent Agency Ranking
公开(公告)号：US3593400A
公开(公告)日：1971-07-20
申请号：US3593400D
申请日：1969-08-18
Applicant: DRESSER IND
Inventor： GEISELMAN DONALD L , NEWELL FREDERICK T
CPC classification number: F16K27/0218 , B22D19/00 , F16K1/2263 , Y10T29/49409 , Y10T29/49417 , Y10T29/49989
Abstract: A butterfly valve in which the seat is formed of a stainless steel ring fused to the valve body by casting the body about the prepositioned ring prior to the finished machining thereof.
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公开(公告)号：US3585633A
公开(公告)日：1971-06-15
申请号：US3585633D
申请日：1968-09-09
Applicant: DRESSER IND
Inventor： YOUNG ROBERT E
Abstract: A reference voltage is applied to the noninverting input of a differential amplifier. The output of the amplifier is connected through a feedback resistor to the inverting input so that the output voltage increases as required to maintain the inverting input at the same potential as the reference voltage. A plurality of resistance branches connect the inverting input to ground. Current through the feedback resistor can be increased incrementally by switching selected resistance branches conductive, thus requiring an increased output voltage in order to maintain the inverting input at the reference voltage. Current through each resistance branch is controlled by a transistor operated in the inverted mode so that the IR drop through the transistor tends to cancel the offset voltage of the transistor. When operated as a digital-to-analog converter, the digital input is used to control the resistance branches and the output of the amplifier produces the analog signal. A step approximation analog-to-digital converter is also described in which the output of the differential amplifier is applied to one input of a comparator and an analog signal applied to one input of a comparator and an analog signal applied to the other input. The resistor branch network is operated by a step approximation logic circuit in a manner to maintain the system balanced. The state of the resistor branch network is representative of the digital output. The reference voltage and analog input voltage may also be reversed.
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公开(公告)号：US3585058A
公开(公告)日：1971-06-15
申请号：US3585058D
申请日：1968-06-03
Applicant: DRESSER IND
Inventor： REARDON DANIEL E
CPC classification number: C21B7/06
Abstract: SLINTERED REFRACTORY COMPRISING FROM 25 TO 60%, BY WEIGHT, CR2O3, 1/2 TO 10% TIO2, THE REMAINDER AL2O3 AND LESS THAN 1% ASSOCIATED IMPURITIES.
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公开(公告)号：US3580333A
公开(公告)日：1971-05-25
申请号：US3580333D
申请日：1969-09-11
Applicant: DRESSER IND
Inventor： DOUGLAS BOBBY L
CPC classification number: E21B43/38 , E21B43/122
Abstract: A device for removing liquid from a well bore which utilizes two valve means. One valve admits liquid to the tubing and the other valve admits gas to the tubing to lift liquid in the tubing to the earth''s surface.
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公开(公告)号：US3563322A
公开(公告)日：1971-02-16
申请号：US3563322D
申请日：1969-09-30
Applicant: DRESSER IND
Inventor： YOUNG JAMES W , KUNKEL ERNEST O
CPC classification number: E21B7/027 , B25H1/0064 , E21B15/04 , E21B19/24
Abstract: A system for erecting and changing the position of the drill column of an earth boring machine. The drill assembly is held in place by supports pivotally mounted upon a base. Brace means are attached to the supports which hold the drill assembly in position. Linkages may be attached to drill assembly and the brace means removed. Movement of the main thrust cylinder in the drill assembly causes the support means and consequently the drill column to change position. Support members may again be put in place to hold the drill column in position.
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