Abstract: A force limiting workpiece holding device for holding a workpiece in a workpiece processing assembly having a spindle and a closer that applies a force, comprises a workpiece holder slidably mounted to the spindle. The workpiece holder includes a plurality of circumferentially-spaced gripping segments that are movable between expanded and contracted positions to grip and release a workpiece. A force limiting coupling structure includes a biasing structure having a spring force. The coupling structure is operatively mountable between the workpiece holder and the closer such that a force applied by the closer to move the gripping segments of the workpiece holder between the expanded and contracted positions is transferred to the workpiece holder through the coupling structure and the biasing structure thereof, whereby a resultant force being applied to the workpiece holder by the closer is limited to the spring force of the biasing structure.

Abstract: An expanding, inner diameter gripping collet assembly for a pick-off spindle. An arbor base is connected to the pick-off spindle and is moveably connected to a moveable arbor. The moveable arbor engages and is driven by the pick-off spindle nose. The moveable arbor has motion-translating cam surfaces on one end that engage corresponding surfaces on one end of an expanding collet. A drawplug having motion-translating cam surfaces that engage corresponding ones on the other end of an expanding collet is inserted through the moveable arbor and secured into the arbor base. The collet assembly also includes an ejector housing, in which an ejector is positioned for sliding movement. A compression spring biases the ejector forwardly.

Abstract: An expanding, inner diameter gripping collet assembly for a pick-off spindle. An arbor base is connected to the pick-off spindle and is moveably connected to a moveable arbor. The moveable arbor engages and is driven by the pick-off spindle nose. The moveable arbor has motion-translating cam surfaces on one end that engage corresponding surfaces on one end of an expanding collet. A drawplug having motion-translating cam surfaces that engage corresponding ones on the other end of an expanding collet is inserted through the moveable arbor and secured into the arbor base. The collet assembly also includes an ejector housing, in which an ejector is positioned for sliding movement. A compression spring biases the ejector forwardly.

Abstract: An expanding collet assembly comprises an arbor having a flange portion for securing to a machine tool spindle and a shaft portion extending from the flange portion. The shaft portion includes a first conical surface disposed at its free end and a second conical surface disposed adjacent the flange portion. Conical surfaces are parallel to each other and disposed radially inwardly in the direction away from the flange portion. An expanding collet having alternately disposed slots to form a plurality of fingers extend inwardly from opposite collet ends and have inner conical surfaces at the collet ends that cooperate with the first and second conical surfaces. The expanding collet is axially slidably disposed around the shaft portion between a relaxed position when the collet is disposed away from the flange portion and an expanded position when disposed toward the flange portion.

Abstract: A collet chuck for holding a tool or workpiece on a spindle of a machine tool. The collet chuck has a hollow collet mount having a rear end to be attached to the spindle. A plurality of radially disposed holes extending from the exterior surface to the interior surface of the collet mount. A cam surface is disposed adjacent the front end on the interior surface. The chuck also has a two-piece, tubular collet with a collet cam adjacent the front end on the exterior surface for interacting with the cam surface of the collet mount. The two-piece collet comprises a collet head with an annular groove adjacent the rear end and a hook portion between the rear end and the groove, and a collet body with a flange portion at its front end. The flange portion of the collet body engages the hook and groove of the collet head. A slot associated with each radially disposed hole is provided in the collet body.

Abstract: A hydraulic safety valve adapted to cut or divert the flow of pressurized fluid A hydrau/sudden rupture occurs in the hydraulic system. The valve has a valve body with an inlet port, first and second outlet ports and a sump port. A first valve member controls the inlet port and directs fluid to one of the out let ports and a second valve member disposed within the valve which blocks the sump port when the valve is in operating position and directs the flow of pressurized fluid into the sump when the system pressure fails.

Abstract: An improved tow bar assembly and attaching system for use of heavy vehicles eighing in excess of 50 tons. The invention reduces shock to the two bar assembly though a hook and loop attaching means between the tow bar and the towed vehicle. Reinforcing composite windings about the midpoint of the tow bar reduce the overall weight of the tow bar while increasing strength and rigidity in critical areas.

Abstract: An improved extension for use with tools is disclosed. The extension has a pair of gears located on a frame. The gears have a chain drive therebetween to allow the force applied to one gear to be applied to the other gear. The structure allows a drive member such as a socket to be offset from the drive handle.

Abstract: A proportioning valve for hydraulic systems having a pair of hydraulic motors. The valve has forward and reverse positions and will also provide differential flow to the paired motors when a difference in drive speed is necessary.

Abstract: A rotary vane hydraulic motor wherein pressurized liquids are admitted to the working chambers through intake passages oriented tangentially to the rotor peripheral surface. Each intake passage has two flat parallel side surfaces spaced apart approximately the transverse width of the working chamber, such that the liquid readily fills the chamber width dimension as it enters the chamber, without excessive turbulence or flow disruptions.

Abstract: The invention is a compound motor having an internal combustion engine, a turbine driven by exhaust from the engine and compressor connected to the turbine. The compound motor has a clutch means to declutch the compressor from the turbine and to disable the turbine from transferring power to a gear set. The gear set is capable of simultaneously receiving power from the engine and the turbine and transferring this power to a final output shaft. The clutch mechanism brake or debrakes, and clutches or declutches, in response to torque or rotational force exerted on the turbine by the exhaust gas from the engine.

Abstract: Disclosed is differential mechanism having two bearing rings. The mechanism is used for steering a vehicle by delivering a higher speed rotational power output to a tractive drive on one side of the vehicle than to another tractive drive on the opposite side of the vehicle.

Abstract: An improved pressure relief valve is disclosed which provides a simple inexpensive structure to exhaust a pressure filled bag, such as an airbag, in a controlled manner when the pressure in the bag exceeds a predetermined level.

Abstract: The invention is a compound motor having an internal combustion engine, a turbine driven by exhaust from the engine and compressor connected to the turbine. The compound motor has a clutch means to declutch the compressor from the turbine and to disable the turbine from transferring power to a gear set. The gear set is capable of simultaneously receiving power from the engine and the turbine and transferring this power to a final output shaft. The clutch mechanism brake or debrakes, and clutches or declutches, in response to torque or rotational force exerted on the turbine by the exhaust gas from the engine.

Abstract: Disclosed is a differential mounted between two drive wheels of a vehicle, the differential having a lock-out mechanism for disabling the differential and forcing the drive wheels to rotate at the same speed.

Abstract: Disclosed is a manual crank mechanism to rotate or traverse a turret on a military tank. The mechanism has means to disengage its drive gear from a complimentary gear on the turret if a human operator does not positively grip the crank handle of the mechanism. The mechanism also includes means to disable the motorized gear train that ordinarily drives the turret, the disabling means functioning when the operator grips the crank handle.

Abstract: Disclosed is a mechanism in a motor vehicle for hydraulically selecting the gears of an automatic transmission. The mechanism is a valve connected to a pressure source and having two sets of outlet ports, one set controlled by a manually operated linkage. The other set of outlet valves is controlled by a gear-shift mechanism responsive to reaction torque on an output shaft. The gear shift mechanism includes a planetary gear set connected between the output shaft and an input shaft leading from the transmission. The planetary gear set has a ring gear linked to a lever rotating an apertured ring in the housing. Rotating the ring selectively opens or blocks access to ports of the second set. The linkage between the planetary gear set and the valve has means to bias the planetary gear to a position corresponding to the "drive" mode of the automatic transmission.

Abstract: A check valve with a shaped outlet port and interior fluid passage provides a valve with improved fluid flow characteristics.

Abstract: A steering mechanism for a tracked vehicle wherein a motor-operated gear is rranged to rotate two planetary gear components in opposite directions. A single input shaft drives two planetary gear systems at different speeds and/or different directions to achieve a vehicle steer action. The mechanism is compactly arranged so that the control gearing is centered on the input shaft axis.