Class 72/13.3 - Sensing pressure of tool actuating fluid

Subclass of Class 72 - Metal deforming
Definition: Subject matter wherein the tool is driven by a pneumatic
No. of patents: 19
Last issue date: 11/27/2007

Number	Title	Issue Date
7299673	Rolling device Rolling device with two work rolls supported in a rolling stand by a chock and with at least two additional rolls supported in the rolling stand by an additional chock. At least one of the work rolls and at least one of the additional rolls is adjustable for adjusti...	11/27/2007
7169101	Deflection compensation roll Deflection compensation roll and process for reducing vibrations in deflection roll. The roll includes antifriction bearings, a roll jacket supported in an area of its axial ends on the antifriction bearings, and hydraulic supports arranged to hydraulically support ...	01/30/2007
6082161	Method and apparatus of stably controlling rolling mill In a stabilization control of rolling, proportional differential control of snake motion of a to-be-rolled material caused during a rolling process, is achieved on the basis of a lateral deviation of loads which are detected by load sensors disposed on a ...	07/04/2000
6000259	Position-controlled edging stand arranged in front of a finishing train for continuously cast strip material A finishing train for continuously cast strip material and a method of operating the finiching train, wherein an edging stand is arranged in front of the finishing train for preventing strip material cracks occurring during the reduction of the strip thic...	12/14/1999
5379620	Apparatus and method for forming precision surfaces on shaft-like components An apparatus and method for forming precision surface shapes on shaft-like parts comprises a pair of substantially cylindrical and rotatable dies having forming surfaces located adjacent a shaft-like part therebetween. The shaft-like part is located in a ...	01/10/1995
5327754	Method and apparatus for controlling the passage of rolled stock of little longitudinal tensile strength through a continuous rolling mill In controlling the passage of rolled stock under little longitudinal tensile stress through a continuous rolling mill by secondary-controlled hydrostatic drives for the individual rolling stands, the rotary speeds of the hydromotors associated with the dr...	07/12/1994
5325694	Extrusion billet taper quenching system The specification discloses a dynamic self-adjusting taper quenching system for producing isothermal extrusions in a nonferrous extrusion operation. The quenching system includes a quenching unit, a computer for controlling the quenching unit, and an inte...	07/05/1994
5255548	Method for roller levelling of heavy plate A method of levelling metal plate in a leveller having at least three vertically opposed sets of driven and backed-up upper and lower work rolls mounted in at least three upper roll frames and a lower roll frame, each of the upper roll frames being adjust...	10/26/1993
5231859	Fluting machine A fluting machine and method produce fluted poles. The fluting machine has an aperture means, a carriage, and a track configured so that the carriage can travel on the track toward the aperture means. The carriage has a fluted mandrel for holding a pipe t...	08/03/1993
5189896	Single stand roller leveller for heavy plate A roller leveller for one-pass levelling of high strength metal plate comprises a main frame, top beams mounted on the main frame, three upper roll frames mounted on the top beams, a lower roll frame mounted on the main frame, three sets of upper and lowe...	03/02/1993
4898014	Roll shifting system for rolling mills The invention relates to a rolling mill of the 4 Hi Mae West type having cylinders for axially shifting the work rolls for a schedule free rolling operation, work roll balance cylinders are mounted in the Mae West blocks and as a result assume a varying o...	02/06/1990
4848119	System of rolls for use in calenders and like machines A roll for use in the system of rolls of a calender has a stationary carrier which is surrounded by a deformable hollow cylindrical shell movable radially relative to the carrier and having end portions which surround and are rotatable relative to rings w...	07/18/1989
4709571	Method of operating a controlled deflection roll and a rolling mill equipped with at least one controlled deflection roll A method of operating a controlled deflection roll having a stationary roll support or beam and a roll shell or jacket rotatable about the stationary roll support. The rotatable roll shell is supported in relation to the stationary roll support by means o...	12/01/1987
4603569	Pressure controlled plate mill A mill and a method for rolling flat workpieces of great width such as metallic strip, plates and the like. The mill comprises upper and lower housing beams joined at their ends by pairs of channels defining windows in which chocks are slidably mounted. U...	08/05/1986
4485649	Rolling mill control system A rolling mill having hydraulic cylinders in each housing to adjust the roll gap is provided with a control system whereby a workpiece is kept on a central path through the mill and is prevented from wandering from this path towards one of the mill housin...	12/04/1984
4445349	Variable crown roll shape control systems A hydraulically inflatable roll for flat rolled products is formed with a constant cross section internal fluid channel spaced uniformly from its working surface and extending spirally from end to end of the roll. The channel is connected through an end o...	05/01/1984
4287738	Method of controlling the continuous movement of stock being rolled in a rolling mill train The rolls of each rolling mill stand of a rolling mill train are driven by a hydraulic turbine. A variable displacement pump is operated to apply hydraulic pressure to each of said turbines to operate the same at an infinitely variable speed. Any change o...	09/08/1981
4214464	Apparatus for controlling the thickness of rolled products There is provided hydraulically-operated work roll gap control cylinders forming a closed-circuit hydraulic system during rolling, and there are also provided hydraulically-operated backup roll control cylinders to which is connected a rolled product thic...	07/29/1980
3961510	Tension device for a rolling mill and the like The disclosure of this application relates to a looper device employed to impose a constant tension on a strip as it passes between the stands of a tandem rolling mill. The looper is operated by an hydraulic actuator which is controlled by a computer cont...	06/08/1976

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Class 72/13.3 - Sensing pressure of tool actuating fluid