Abstract: A thermostatic mixing valve has a connection housing and an attachment housing which are joined together at abutting surfaces. The connection housing has hot, cold and mixed water passages which mate with respective hot, cold, and mixed water passages in the attachment housing. The attachment housing further has valve means for controlling the temperature and quantity of the mixed water.

Abstract: The invention relates to a device or arrangement for measuring the angle of rotation of the rotor of a rotary machine. Markings are applied circumferentially to a part of the rotor that is enclosed by the housing and a passage is provided in the housing which has an opening adjacent the markings. A sensor arrangement disposed at least partly in the housing passage has one end thereof adjacent the markings in a position for detecting the rotational movement of the markings. The snesor arrangement may have electrical, magnetic or optical capabilities.

Abstract: A trailer hitch that provides a heavy duty center box type for gooseneck or fifth-wheel trailers which may be quickly removed from a truck bed to leave the truck bed uncluttered and unobstructed. The hitch includes a hitch frame that fixedly mounts rear latch legs to depend therefrom through slots in the bed to latchingly engage the rear edge portion of a mounting member which is fixed to the truck frame beneath the truck bed (floor). A pair of front latch legs are pivoted to the hitch frame in depending relationship for movement by a handle between a position to latchingly engage the front edge portion of the mounting member and a release position. Lock arms are mounted on the hitch frame for pivotal movement by trigger mechanism between a position to retain the front latch legs in their latching position and a position permitting the front latch legs to move to their release position.

Abstract: A fenestrated tracheostomy tube valve assembly removably insertable in a tracheostomy stoma and having an enlarged flange abuttable against the skin of the throat, a smaller diameter flange in the trachea and abuttable against the tissue surrounding the opening of the stoma to the trachea, a tube part extendable through the stoma and joined to said flanges, and an inflatable annular diaphragm joined to said flanges that extends through the tube part and in conjunction with the inner peripheral wall of the tube part forms an inflatable chamber. A squeeze ball is fluidly connected by a flexible fluid conduit to open through the enlarged flange to the inflatable chamber, and when the squeeze ball is squeezed, inflate the chamber to block fluid flow axially through the tube assembly and when the squeeze pressure is released, the chamber is deflated to permit fluid flow through said assembly to and from the trachea. Blocking fluid flow through the tube assembly facilitates speech.

Abstract: A control system for a two way acting hydraulic servomotor wherein the servomotor is connected in the diagonal of a bridge circuit that includes four magnetic valves with a pair of the valves being normally open in a non-energized condition being connected to the one end of the servomotor and to the container and a second pair of the valves being normally closed in a deenergized condition being connected to the opposite end of the servomotor and to a pressure source. Circuitry provides pulse trains that are modulatable to control the operation of the magnetic valves and thereby the application of pressurized fluid to the opposite ends of the servomotor.

Abstract: This invention relates to an insert freely displaceable in a coil spring that at opposite ends abut against spring support formed in a motor compressor unit capsule and a spring support formed by a stator plate. The spring supports project into the opposite ends of the spring to extend toward one another. The opposite ends of the insert are recessed to be of shapes generally corresponding to the adjacent parts of the supports. The insert serves as a transport abutment and permits lateral movement without excessively deforming of the spring.

Abstract: This invention relates to a thermostatic mixing valve that includes a housing, temperature control valves in the housing that have axially spaced cold and warm water regulating bases and a valve element for cooperating with the above valve bases to reversely vary the flow of the cold water and warm water to the housing outlet port, and cold and warm water quantity setting valves upstream of the temperature regulating valves for controlling the quantity of the cold and warm water flow from the housing cold water and warm water supply ports to the cold and water regulating valves respectively. The quantity setting valves have axially spaced quantity setting valve bases and a common valve member axially movable relative to the quantity setting valve bases for controlling downstream flow from the supply ports, the pressure at the supply ports acting in the same axial direction against the common valve member.

Abstract: An electric laminar resistor wherein a thin metal film is applied to a ceramic substrate. Metal film material is removed to form a resistance track and recessed connecting zones at opposite ends of the track. A burnt-in thick layer paste extends through the connecting zone recesses and solidified to form connecting elements that are adhered to the substrate. A metal powder and glass frit coating is applied over the resistance track. The resistance of the resistor may be adjusted by separating a part of the track.

Abstract: Stringed instruments such as a guitar or the like that includes a head, a neck extending between the head and a body, tremolo apparatus having a base mounted on the body, a string mount pivotally mounted on the base, a handle assembly for selectively pivoting the string mount in a first direction from a datum position to increase the tension in the strings and alternately in a second direction from the datum position to decrease the tension in the strings, a stop member to limit the pivotal movement of the string mount in the second direction to the datum position when no manual force is being applied to the handle assembly while permitting the handle assembly being manually pivoted in the second direction from the datum position, spring mechanism constantly resiliently urging the stop member into abutting relationship with the base, skate mechanism mounted on the base for selectively adjusting the height of the strings, and truss mechanism mounted by the neck to counterbalance the pull of the strings that in

Abstract: The nutcracker apparatus includes a frame on which there is provided a front and a rear head assembly that each has a head which is resiliently urged toward the other but is limited in such movement by a knife at least in part located in a slot in the head. Each knife is mounted on a rod, the rear rod being movable toward the front rod to initially clamp the nut and as the movement of one head toward the other is limited by the uncracked nut, the rear knife continues to move toward the front knife to crack and/or split the nut. In one embodiment the rear knife is mounted by the rear rod which is moved forwardly by a pivotal handle moving binder members into binding engagement against the rear rod. In the second embodiment the rear rod is a piston rod of a piston cylinder combination that is operated automatically to crack a nut as the nut is dropped between the heads.

Abstract: Core barrel apparatus that includes an inner tube assembly that may fall under gravity or be fluidly propelled through a drill string to the bit end thereof for being retained at the bit end by latches and being retractable by an overshot assembly. The inner tube assembly includes an annular seal portion for forming a fluid seal with the drill string and a fluid by-pass channel with valving mechanism extending therein to permit outward flow but block inward flow while the inner tube assembly is being fluidly propelled inwardly. The inner tube assembly also includes control mechanism to prevent the valving mechanism being moved to permit significant inward flow through the channel only after fluid pressure has been applied to the inner tube assembly at the bit end of the drill string, the latches have moved to their latch seat engaging position and then inward fluid pressure has been significantly decreased.

Abstract: A hydraulic sealing apparatus for sealing an annular gap between two members which are movable relatively to each other and one of which has an annular groove for receiving the sealing apparatus, the groove having a side wall at least on the low pressure side, comprising an elastic ring and a slide ring which consists of a slidable plastics material and has an annular sealing rib at its free circumferential surface.

Abstract: A reverse circulation deep hole rock bit that includes a drill bit connector tube telescopically extended into a drill bit housing to cooperatively form a part of a radial inner fluid channel for cuttings to flow axially outwardly and a radial outer annular clearnace space, a plurality of angularly spaced pressurized fluid passage that open to the annular space and a check valve in each fluid fluid passage to permit inward flow of fluid, but to block fluid flow in the opposite direction. A plurality of angularly spaced cutter arms have arcuate tubular segments secured to axial and radial outer portions of the arms while a radially inner tubular skirt is secured to or abuts against the axial outer portions of the arms.

Abstract: An electric machine that includes a stator having a sheet metal packet which has an end plate at each end, and insulating plates abutting against the end plates. The packet has radially inwardly opening winding grooves. Insulating plates are provided at the ends of the packet and have recesses that correspond to the grooves and ribs that form abutment faces against which winding liners provided in the grooves abut. The ribs are shaped such that the windings emerging from the grooves will not cut through the liners when bent sharply. The ends of the groove liners are shaped by thermal stamping to lie against the side faces of the ribs.

Abstract: A wire line core barrel inner tube assembly having a latch body that has a maximum diameter, axial intermediate portion providing a downwardly facing annular shoulder seatable on a drill stem landing ring and a fluid bypass channel extending through the maximum diameter portion and a valving assembly mounted by and cooperating with the latch body for controlling fluid flow through said channel. The valving assembly is operable to a position blocking the bypass channel but permits the inner tube assembly to move down faster than the fluid flow in the drill stem during the time the inner tube assembly moves downwardly in the drill stem.

Abstract: A guide wire handle for selectively stiffening a guide wire and releasably locking the guide wire in a stiffened condition that includes a main body that can be held by one hand and has a rectangular opening in which there is mounted a slide member that is movable between a guide wire datum position and a guide wire stiffened position. The main body and slide member have elongated linear slits and bores with or without metal plate extended therein. A sleeve on the core wire proximal end abuts against the slide member plate and the proximal end of the coil spring abuts against the main body plate such that as the slide member a plate is moved away from the body plate, the coil spring is compressed and the core wire is placed in tension to stiffen the guide wire.

Abstract: A pressure limiting valve including a body having an inlet and an outlet coaxially arranged at opposite ends of the body. A discharge passage is disposed in the body between the inlet and outlet. A cylindrical valve element is spring biased to a position to prevent communication between the inlet or outlet and the discharge passage. The valve element includes areas at opposite ends with one area being larger than the other so that pressure in the inlet and outlet act on the valve in a direction opposite the spring bias so as to open the inlet and outlet to the discharge passage upon a predetermined increase in pressure.

Abstract: The invention relates to an adjustable axial piston engine having spaced apart end walls with a shaft extending between the end walls. A rotary carrier is attached to the shaft adjacent one of the end walls and an oblique adjusting plate is mounted adjacent the other end wall. A piston-cylinder unit extends between the carrier and the oblique plate. A pivot axis for the oblique plate includes a bearing arrangement between the plate and the adjacent end wall. A servo unit for adjustably rotating the plate about the pivot axis is provided between the plate and the adjacent end wall. The piston-cylinder unit is carried by the carrier and is slidably engageable with the oblique plate. Flanges are provided for the piston-cylinder units which are spring biased into engagement with the oblique plate via a spring biased pressure plate.

Abstract: A heating oil pump which is intended for selective single or double line operation. Between the suction side and return side there is a connecting passage which, for double line operation, is closable by a closure member. The latter is displaceable upon insertion of a plug from a closed to an open position by an actuating element which projects into the inserting path of the plug and, upon removal of the plug, back to the closed position by a return spring. This results in automatic change-over without the need for the return pressure to be higher than the suction pressure.

Abstract: A table having a table top frame that has a central opening which is in part defined by an inner peripheral rib for supporting a horizontal tempered protective glass pane with its top surface coplanar with the table top, and an inner peripheral lip for supporting a tempered protective glass pane which in turn supports a decorative glass unit. The minimum dimension of the spacing of the horizontally opposite, adjacent edges of the rib is substantially less than the corresponding spacing of the horizontally opposite, adjacent edges of the lip, the rib extending between the top glass pane and the decorative glass unit. The minimum dimension of horizontally opposite, adjacent parts of the outer peripheral frame of the decorative glass unit is substantially greater than the above mentioned minimum dimension of the rib whereby the unit outer peripheral frame is at least substantially concealed when viewed from above the top protective glass pane.