Abstract: Hydraulic steering mechanism is extended through an aperture in an end wall in a housing that has a pressure chamber, the steering mechanism including a slide rotatable with the steering column. An axial bearing is mounted by the end wall for rotatably mounting the steering mechanism while the aperture axially opposite end portion mounts a sealing ring between the housing and the steering mechanism. Axially between the sealing ring and the bearing there is a pressure reduction ring providing an annular gap with the slide for throttling the flow of fluid from the pressure chamber to a fluid collecting chamber that at least in part is defined by the pressure reduction and sealing rings. Fluid can flow from the collecting chamber through a housing outlet. The pressure reduction ring has an enlarged diameter flange for sealingly engaging the end wall and being clamped between the wall and the axial bearing.

Abstract: A closure made of wind resistant material for motorcycle helmets. One embodiment of the closure has a front flap (20) which opens to allow the head to pass through the closure into the helmet. The front flap closes with hook and loop or other fasteners. The rear of the closure has an elastic panel (12) to allow stretching as the helmet passes over the head. An elasticized neck ribbing (14) closes around the wearer's neck. The closure attaches to the helmet by means of squeezing the outer (upper) edge of the closure between the helmet padding and helmet shell, as well as with hook and loop fasteners. In a second embodiment the closure has a continuous panel having front edge portions with one of hook and loop fasteners for removably securing the front edge portions to one another. A third embodiment has longitudinally extending straps for mounting the closure to the helmet.

Abstract: For reducing the unwanted escape (dripping) of oil from a burner nozzle, nozzle holder, oil warmer apparatus is provided to continuously regulate the oil temperature during operation of a oil fired heating system to maintain a nearly constant oil volume in the nozzle holder, oil warmer unit. The apparatus includes a pair of oil pipes that are encapsulated and connected between the nozzle and pump connections, there being a pair of heating elements that are also encapsulated for heating the oil pipes. The first heating element is permanently energized during the operation of the heating system while the second heating element is energized only when oil is being feed to the burner nozzle.

Abstract: A conventional stake member having an annular post mount joined to the upper end of the stake to form a socket for receiving the lower end portion of a right angular extension of the elongated mounting member of a slide hammer. A right angle hammer member has a lower terminal edge for forming a mating fit with the top edge of the stake when the extension extends into the socket and a pin removable attaches the stake to the hammer member and extension. The upper end portion of the rod which forms part of the mounting member mounts an anvil having a top surface and a bottom surface to be selectively struck by a slide member for the selective one of pulling the stake and driving the stake into the ground, the slide member being reciprocal relative to the mounting member. The anvil is located within the slide member. The lower end portion of the rod is welded to the apex of the extension.

Abstract: A stepped piston is axially displaceable in the stepped piston valve chamber and has a front face facing the front face of the valve seat and an axially opposite surface formed at the juncture of its piston head portion to its reduced diameter shaft portion. The piston has an axial through-bore that opens to fluid connecting bore in the valve housing while the housing has a second fluid connecting bore. The piston is displaceable in the chamber between an open position permitting substantial fluid flow between the connecting bores and a closed position having its front face resting against the valve seat face to permit a leakage flow gap between the faces when pressurized fluid acts against the piston surface and block substantial fluid flow between the first bore and the second bore. A spring in the chamber urges the piston toward its closed position.

Abstract: An oil burner pump that includes a housing having a filter cartridge chamber that has an access opening which is closable by a removable cover. A filter cartridge is removable inserted into the chamber and is securable to the cover to be removed from the chamber when the cover is removed. The cartridge has opposite end portions and filter fabric extended between the opposite end portions, one of the end portions being removably securable to the cover.

Abstract: Disclosed herein are various types of guidewires that are provided with spaced indicia to indicate the distance that a guidewire is extended into a vascular vessel, catheter or other instruments. That is, there are disclosed J-type, linear type and steerable type guidewires. Preferably the indicia is made up of a system of marks to indicate various units of measurements, for example units of 10, with narrow bands representing the units such as 10, 20, 30 and 40 while wider bands represent units of 50. If the guidewire is a double ended guidewire then the indicia would represent progressively higher indicia from each end of the linear part of the guidewire. Preferably the marks are formed by electro-chemical etching of the metal wire forming at least a part of the guidewire and if desired may be provided with a clear plastic coating that is non-toxic and bio-compatible. The marks may be formed by other process, for example laser treatment.

Abstract: A simulated football game having a magnetic disc rollable out of a chute onto a scrimmage field on which defense players having a piece of iron embedded therein are movably situated, a huddle being releasably retained to retain the disc in the chute. The disc is used for determining running play yardage, the disc being rollable into a defense player. A calculator wheel is rotated in only one direction by dual gears regardless of the direction of rotation of the gears and simultaneously moves a marker over a marker field to indicate the position of a football relative to the marker field. The wheel is used to ascertain yardage resulting from passing, and other type plays. A marble carrier is rotated a fraction of a complete revolution each time a plunger is depressed for indicating a play and releasing the huddle to allow a disc to roll out of the chute. The carrier in being rotated, at times, discharges a marble to roll onto the scrimmage field for indicating whether there is a penalty or a fumble.

Abstract: The flow meter works on the Coriolis principle and has a measuring tube and at least two energy converters. At least one of the energy converters is an oscillation exciter for oscillating the tube to generate a wave traveling along the tube and an oscillation detector. An evaluating circuit uses the speed of travel of waves in the direction of flow of fluid through the tube and in the direction opposite the direction of flow to determine the mass flow of fluid through the tube.

Abstract: The dead bolt lock assembly includes a lock cylinder mounted by the door and extending into the room interior and having a lock handle with a cross bar portion. A security device has an end portion having a longitudinal notch opening through the terminal transverse edge thereof to proved to longitidinally extending legs. The legs have opposite longitudinal surfaces that converge in a direction toward the terminal edge, the surface of the legs most closely adjacent the lock cylinder when in use having transverse ribs extending away therefrom. The legs are extendable between the cross bar and the lock cylinder housing until the legs are in binding engagement therewith prevent the lock handle from rotating and thus prevent one from unlocking the door outside of the room using the right key for unlocking the door. The above mentioned surfaces are planar.

Abstract: The measuring tube is for an electromagnetic flow meter and has a tube member made of a non-magnetic material that is provided with opposite through passages that have electrodes extended therethrough. An insulating lining of an enamel priming layer coats the inner surface of the tube member and fills the gaps between the electrodes and the tube member surfaces defining the through passages, the lining also including an covering enamel layer covering the priming layer surface that is within the tube member interior. The end faces of the electrodes that are in the tube member interior have the enamel material cleared therefrom. The priming layer may be formed by filling the tube member with a priming enamel slip, pouring out the slip material, cleaning the electrode end surfaces that are within the tube member interior and then heating to melt the slip material and then cooling. The covering layer may be formed by the same steps.

Abstract: The magnetic valve includes a magnetic coil, at least one valve seat, a valve shank surrounded by a valve plate member and movable upon energizing of the coil to move the surrounding valve plate member away from the valve seat to permit fluid flow therethrough, and a resetting spring for resiliently retaining the valve member in a position for blocking fluid flow through the valve seat when the coil is deenergized. The spring action acting upon the valve plate member moves the valve shank away from the coil upon denergization of the coil. The valve plate member is movable relative to the shank and includes an annular resilient metal plate that has radial inwardly extending teeth and a coating of elastic plastic sprayed on to the plate to leave at least part of the teeth uncoated.

Abstract: The method and apparatus is directed to monitoring a fluid conduit system for leaks, particularly a leakage flow of less than 25 liters per hour. After closing a main valve that fluidly connects a fluid source to the conduit system, the time is measured for the pressure in the conduit system to drop to a predetermined first value. Upon reaching the first value a shunt valve is opened and the time is measured for the pressure to rise to a second predetermined value. The leakage flow is calculated from the two measured times and the two pressures together with known constants for the control system. In place of providing the shunt valve the main valve may be partially opened. Controls for the valves are provided together with evaluating apparatus for determining the leakage volume.

Abstract: Power wrench apparatus for holding a drill rod stationary as a rod joint is being broken that includes a first piston cylinder combination for pivotally moving a mounting bracket relative to a frame between wrench rod clamping and releasing positions, a second piston cylinder and an arm member pivotally mounted on the mounting bracket, and a slide handle and a jaw actuator pivoted to the slide member and second piston cylinder respectively to act through a jaw bracket and the slide member to relatively move the wrench first and second jaws from their rod release to their rod clamping position when the mounting bracket is in its wrench clamping position when the piston rod of the second piston cylinder is extended.

Abstract: The apparatus includes a steeped axially displaceable piston in a stepped cylinder housing, and a rotary shaft is axial fixed relative to the housing and extends into the piston reduced diameter end portion. The piston reduced diameter portion and the housing having a cooperating set of first teeth while the piston and shaft have a cooperating set of second teeth whereby at least one set of the teeth serve to convert axial movement of the piston into rotary motion of the shaft. The shaft is supported in the housing adjacent where it exits from the housing by a first bearing while a second bearing is provide radial adjacent to the juncture of the housing enlarged and reduced diameter portions that supports the interior end portion of the shaft in the piston reduced diameter portion. A third radial bearing is provided between the enlarged diametric portion and the piston enlarged diametric portion in axial remote relationship to the first bearing.

Abstract: Disclosed herein a plasma torch that includes a torch body that at its upstream portion is adapted for being removably retained in a plurality of laterally adjusted positions by one lateral end position of a handle. The opposite end of the torch body is joined to the head to extend at an obtuse angle. The head includes an adaptor and an electrode having axial portion coaxially arranged to an air tube and at least parts of the combination of the torch shell and the nozzle to provide a cooling air path to flow downwardly through the tube, thence upwardly around the tube and thence downwardly to primarily discharge downwardly through the shell and in part through the nozzle. A stand and holder are mounted on the shell to hold the nozzle spaced from the cutting surface. The handle has a pair of switches connected in series and positioned to prevent accidently starting the cutting operation, i.e.

Abstract: The temperature sensitive apparatus controls fluid flow from one line to others and includes an elongated wire of a shaped memory wire that changes in length with changes in temperature extended into a valve housing for pivotally moving valve mechanism in the valve housing against the action of a spring from a fluid flow blocking position to a position permitting fluid flow upon heating the wire. The wire is connected to the valve mechanism and extends through a tube, both of which extend exterior of the valve housing with the major portion of the length of the wire being exterior thereof. The tube extends into a connecting member housing that is attached to the exterior of the valve housing and contains mechanism surrounding the tube to heat the wire. The tube is substantially thermally insulated from the interior of the valve housing. The heating mechanism may include a generator for an electric alternating field to induce a heating current in the wire, or an A.C.

Abstract: Disclosed herein is a drill stem having a core bit mounted thereon and an inner tube assembly having an inner tube mounting a corebreaker case that either has or in conjunction with the inner tube provides a corebreaker recess having an upwardly facing planar edge. Advantageously a stop ring and a non-axial split annular corebreaker are mounted in the recess with the stop ring being between the corebreaker and inner tube, even though the corebreaker may be axially slit and/or no stop ring used. The corebreaker has inner and outer peripheral surfaces that are of constant diameters, axial opposite transverse inner and outer planar edges while the recess is in part defined by planar edges. At least one of the parallel edges is inclined to the tube central axis when the core breaker is in its core taking position.

Abstract: In a flow meter that works on the Coriolis principle there is provided a single tube that is bent to have two measuring loops. Upper and lower tube attachment end portions are respectively connected through resilient tubular portions to the opposite ends of the two loops and may be part of the single tube. The loops are superposed and from the juncture of the loops and through at least parts of the attachment end portions are of a continuous downward gradient such that the fluid column in the flow meter will divide and drain through the attachment end portions. Two blocks have tube holder portions for retaining the loop first ends and the measuring loops opposite ends in vertical spaced relationship and connecting the attachment end portions together. The measuring loops are oscilatable in opposite directions while sensors are provided adjacent to the measuring loops for measuring the relative movement of the loops relative to one another to provide a measurement of the fluid flow through the loops.

Abstract: In a flow meter that works on the Coriolis principle there is provided a single tube that is bent to have two measuring loops and a single tube section that connects the adjacent ends of the measuring loops. Tubular attachment end portions are respectively connected through resilient tubular portions to the opposite ends of the two loops and may be part of the single tube. Two blocks have tube holder portions for having the tubular section and the measuring loops opposite ends adjacent their juncture to the resilient portions and the attachment portions adjacent their juncture to the resilient portions respectively extended therethrough. The measuring loops are oscilatable in the opposite direction while sensors are provided adjacent to the measuring loops for measuring the relative movement of the loops relative to one another to provide a measurement of the fluid flow through the loops.