Abstract: A flexible tubing occluding device is provided for releasably occluding flexible tubing. The tubing occluding device includes housing that is adapted to receive the tubing and defines a tubing occluding surface against which a transverse section of the tubing is transversely urged and compressed when in an occluded position. A wedge-shaped tongue member is provided for urging the transverse section of the tubing against the tubing occluding surface.The geometry of the tubing occluding surface and the wedge-shaped tongue member cooperate to distribute a relatively low amount of force at the center portion of the occluded tubing and a relatively large force at the distal ends of the occluded tubing, utilizing the mechanical advantage of the wedge-shaped tongue member.

Abstract: A rotary plug valve capable of being locked in selected positions includes a body and a valve member rotatable in the body between valve open and closed positions. Transverse bores are formed in the body and valve member for reception of a locking pin having a first enlarged head on a reduced shank and a second enlarged head capable of receiving the reduced end of the shank and of being locked thereto. The bore in the body is of a size to receive the heads, the central portion of the bore in the valve body being of a size less than the diameter of the heads but sufficient to receive the shank of the locking pin so that once locked, the pin may not be removed and the valve body and valve member may not be rotated relatively to one another. The pin may be unlocked by a key axially inserted into the shank through one of the heads.

Abstract: A pedal operated flushing system includes a hydraulically-actuated flush valve connected to a hydraulic fluid source by a supply line having a control valve therein. The control valve is mounted on a pocket portion of a bracket, the pocket forming an enclosure about an opening in a wall. A pedal is hinged to the bracket and normally covers the wall opening. The pedal pivots into the enclosure to actuate the control valve. A spring interposed between the pedal and control valve absorbs overtravel of the pedal toward the valve.

Abstract: A self-venting drain valve is disclosed preferably used in connection with tapping accumulated water at the bottom of a fuel/water separator. A valve having a first portion (14) residing at the bottom of a vessel (10) has a main passage (34) and a secondary passage (26), the secondary passage being provided to allow air to enter the container to eliminate a vapor-lock. A second portion (16) of the valve is threaded on the first portion (14) and forms seals (52, 48, 44). When the second portion (16) is unscrewed, the seals are broken in sequence as follows: 48, 52, 44. Accumulated water as well as some fuel will then pass through the same outlet aperture (76) to a collection container held by the operator of the valve.

Abstract: A flow device including a plurality of flow channels which converge in a common housing containing a pre-biased flow control diaphragm at the position of convergence of at least two channels. The control diaphragm is pre-biased by a set of prongs which extend from an integral portion of the common housing.

Abstract: An actuating device for a mixing valve having a valve housing and a movable valve member includes a hand lever which is partly accommodated within a housing and operatively connected to the valve member. The hand lever is movable about two axes perpendicular to each other and is provided with an arc which projects through a slot into the interior of the housing. In order to minimize the size of the slot and to obtain an attractive visual appearance, the arc is provided with an inner contour aligned with the respective housing portion and having a radius extending from a fixed point of one of the axes.

Abstract: A ball valve for controlling liquid flow that comprises a tubular valve body, a ball rotatably built-in inside of the valve body, a pair of unions screwed into opposite ends of the valve body so as to be in slidable contact with the ball, and a pair of body caps connected to outer ends of each union through a packing ring for providing a water-tight seal therebetween. This valve have no cavities therein which cavities tend to entrap the liquid during the passage thereof. According to this construction the valve is kept always clean and free from any contamination caused by the putrescence of the entrapped liquid, even when used in the food industry.

Abstract: A ball valve having a valve body within which is provided a ball for opening and closing the valve. The ball valve is constructed with bushings and lock rings arranged for ease of assembly and disassembly for inspection of the wear of internal ring seals. An internal lock ring is provided with recesses in an end face for receiving a tool which is part of the operating handle of the valve.

Abstract: A butterfly valve comprises a substantially cylindrical casing (20) having an annular valve seat (A) on its inner peripheral surface, and a valve disk (44) disposed within the casing (20) and rotatable about an axis (35). The valve disk (44) is formed at an outer peripheral edge portion with an annular groove (52) in which an annular valve seal (51) is partially fitted. The valve seal (51) is adapted for pressing contact with the valve seat (A) at a predetermined pressure and anchored in the annular groove (52) by resin (58) pressure-injected into the annular groove (52) through a resin injection channel (53) in communication with the groove. Accordingly, the seal pressure of the valve seal (51) on the valve seat (A) can be set to the predetermined value at all times even if the dimensions of the valve seat (A) and the valve disk (44) and the position of the axis of rotation (35) involve errors.

Abstract: An apparatus is disclosed which, in the preferred embodiment, is used to secure a wheelchair to a vehicle which is transporting the wheelchair. The apparatus includes an upper securing portion and a lower securing portion operated by a single control element. Two embodiments are described. In a first embodiment the upper securing element includes a sliding plate which engages an upper portion of the wheelchair for one vertical position, and disengages the wheelchair in a second vertical position. In a second embodiment the upper securing element engages the upper portion of a wheelchair by rotation. Both embodiments employ a lower securing element which engages projections on a wheelchair and also grasps the rear axle of the wheelchair.

Abstract: A guard for attachment to the end of a cylinder of compressed gas comprises a cylindrical portion of diameter approximating the diameter of the intended cylinder and a pair of flanges extending outwardly from the cylindrical portion and contiguous therewith and defining between the flanges a space through which access can be obtained to the interior of the guard for observing and operating upon the valve arrangement of the cylinder. The cylindrical portion is clamped around the cylinder by drawing together the flanges by a pair of bolts extending across the flanges with spaces for defining the minimum space between the flanges. Openings in the cylindrical portion provide handles and access to the interior. The end of the cylindrical portion is open. A chain for supporting the guard and cylinder is attached to the guard and hooks are mounted on the flanges for receiving the hose from the cylinder.

Abstract: A gate valve includes a housing adapted to be installed in a pipeline, the housing having therethrough a flow passage, and a valve member mounted within the housing for movement between a first position, whereat the valve member closes the flow passage, and a second position, whereat the valve member opens the flow passage. The housing and valve member have axially spaced pairs of adjacent annular surfaces cooperating to define seals when the valve member is in the closed position. The housing has therein, adjacent one annular surface thereof defining at least one seal, a duct. Cooling air is introduced into this duct. The one annular surface of the housing has therein structure defining a gap for directing the cooling air from the duct against the respective annular surface of the valve member when closed or into the flow passage when the valve member is open.

Abstract: An automotive air conditioning flushing apparatus having a solvent tank separated from a catch basin by means of a pressure tank and multiple position sequencing valve. A handle of the valve rotates through positions which sequentially direct solvent into the pressure tank by gravity feed, then pressurize the solvent from a remote pressure source and cause pressurized fluid to be delivered into an automotive cooling system, then release pressure and dispose of excess cleaning solvent. Lastly, the handle may be rotated to an off position. System components are stacked one above the other on an upright wheeled frame so that the entire apparatus may be easily moved about in an automotive service facility.

Abstract: A backing diaphragm (5) in a diaphragm valve for corrosive liquids is perforated by a centrally positioned, oblong hole. As known to the art a diaphragm valve for corrosive liquids contains a thin Teflon-diaphragm in contact with the liquid, and a thicker backing diaphragm of rubber or the like serving as a cushion. Both diaphragms are in close contact and are attached to a compressor by a stud bolt which is secured in the compressor by a bayonet closure comprising a cross pin in the top end of the stud bolt which is enclosed in a recess inside the compressor. In a known manner, during fitting of a new backing diaphragm the cross pin is inserted into the recess through a slot and rotated about an angle of 90 degrees. The oblong hole facilitates exchanging the backing diaphragm only without having to withdraw the cross pin out of the bolt, which is usually firmly retained therein by rust or dirt, by pushing the cross pin through the oblong hole and inserting it into the compressor.

Abstract: An occluder valve for closing off the flow of fluid in a flexible plastic tube includes a linearly movable pinch member coupled to a rotatable shaft through a nut. The shaft is coupled to an electric motor through an electrically energizable clutch. The output shaft of the motor is mechanically constrained to rotate in only one direction. The motor, coupled through the clutch, rotates the shaft causing the pinch member to move linearly away from the tubing. A torsion spring opposes this rotation. Once opened the valve will stay opened as long as the clutch is energized as the shaft of the motor will not rotate in a closing direction. To close the valve, the clutch is deenergized and the torsion spring moves the pinch member linearly against the flexible tubing closing it off.

Abstract: A manhole assembly is attached on a fill pipe for an underground storage tank for gasoline, diesel fuel or other types of toxic chemicals. The manhole assembly comprises a bucket-like body attached on an upper end of the fill pipe and a removable cover mounted on an upper end of the body to selectively expose the fill pipe. At least one annular dam is formed on an upper surface of the body and is adapted to nest within an annular groove formed on an underside of the cover. The dam functions as a barrier to prevent the ingress of water into the body during rainstorms and the like. A combined sealing and cushioning assembly attaches a bottom wall of the body to the fill pipe and a drain connection is provided for selectively communicating an internal chamber of the body with the fill pipe.

Abstract: A fluid damper blade made by bending a sheet of metal into a U and bringing the edges of the U together to form the trailing edge of the blade, the two edges of the U being of castellated form so that they interlock when brought together, with the castellations being bent over so as to embrace a reinforcing locking rod extending the full length of the blade trailing edge. This gives the blade enhanced rigidity and increased resistance to bending and twisting stresses. In addition, welding of the edges of the U is made unnecessary.

Abstract: A non-rise faucet assembly including a shank having a lower end through which fluid is introduced and also having an upper end with a chamber in fluid communication with the lower end. A removable stem adapted for insertion into the chamber and having a lower end forming a movable valve in the chamber is provided to permit regulated flow of fluid through the faucet assembly. The stem has an axis of rotation about which the valve is movable in response to non-rising rotation of the stem within the chamber in the shank. One of the shank and the stem has a bore arranged generally transversely of the axis of rotation of the stem and the other of the shank and the stem has a pair of diametrically opposed slots in alignment with the bore after the stem has been inserted into the chamber in the shank. The slots and the bore define a continuous passageway through the shank and the stem.

Abstract: There is disclosed a ram type blowout preventer in which the chambers in which the rams are received and for movement between opened and closed positions are automatically vented to the bore of the preventer housing above the closed rams, as the rams are moved to open position, in order to equalize pressure across the ram and thus facilitate its opening. When the rams are moved to closed position, this vent is closed so that well pressure beneath the closed rams has access through a groove between the ram and the ram chamber to the chamber behind the closed rams so as to assist operating fluid in maintaining them closed. The stem which connects a piston of a hydraulic system for operating the rams is hollow and so arranged as to be pressure balanced whereby there is substantially no force due to well fluid pressure resisting closing movement of the rams due to the extension of the rod sealably through an opening in a wall separating the ram chamber from the cylinder of the hydraulic system.

Abstract: A safety slide clamp to prevent free flow when tubing is disconnected from an I.V. administration device comprises a blade formed with a tear-drop shaped aperture through which the tubing is positioned. The aperture includes an enlarged portion and a narrow portion which is tapered to form a slot that is engageable with the tubing to prevent flow therethrough. A base formed with a well is attached to the pump and is adapted to slidably receive the blade of the slide clamp. Retaining means formed on the base are spaced to support the blade and retain the tubing in a recess between the fingers and the base. Placement of the tubing into the recess and subsequent insertion of the blade into the well permits operational fluid flow through the tube. Subsequent retraction of the blade urges the tubing into the slot to prevent free flow from the tube upon its removal from the device.