Abstract: A seal for being mounted on a reciprocating machine part to seal the machine part includes a sealing element made of elastomer material. The sealing element has a sealing lip defined by two surfaces that intersect at a sealing edge for resting in a sealing manner against the outer surface of the machine part. One of the two surfaces includes a first section and a second section. The first section is inclined at a first angle of inclination with respect to the central axis of the sealing element while the second section is inclined at a second angle of inclination with respect to the central axis of the sealing element, and with the first and second angles of inclination being different from one another.

Abstract: A cylinder head structure for an engine, including grooves (18; 12a) in a top surface (2; 2a) of a cylinder head body (1; 1a) such that they surround an associated a fuel injection nozzle hole (11; 8a). Valve tappet guide holes (6; 3a) are also formed in the top surface (2; 2a) of the cylinder head body (1; 1a) around each of the fuel injection nozzle holes (11; 8a). The grooves (18; 12a) connect the adjacent tappet guide holes (6; 3a) and surround the associated nozzle or spark plug hole. Cylinder head bolt holes (15; 9a) are also formed around the tappet guide holes (6; 3a). When cylinder head bolts are tightened to join the cylinder head with a cylinder block, a radiant tension (F) is generated from the cylinder head bolt heads which are in contact with the cylinder head top surface. This radiant tension would cause cracking around the injection nozzle hole (11; 8a).

Abstract: An electronic engine control system for a lean burn engine includes a unit for detecting an amount Qa of intake air fed into a cylinder of the engine, a unit for detecting an engine speed Ne, a unit for calculating a basic fuel injection pulse width TPbas on the basis of the intake air amount Qa and the engine speed Ne, and a unit for determining control parameters containing any of at least an air-fuel ratio, an ignition timing, a fuel injection timing, a throttle opening and an EGR rate in accordance with an operating state of the engine in optimum. A reference TPref having the same dimension as the basic fuel injection pulse width TPbas and which is a function of an accelerator operating amount determined on the basis of the accelerator operating amount is determined as a load parameter used upon determination of the control parameters of the engine in operation with a lean air-fuel ratio. Because the accelerator opening amount is inputted to calculate the reference .sub.

Abstract: An arrangement and a process for communication between an ignition module (ICM) mounted on an engine and a control unit (ECM). The ignition module includes detection circuits and signal processing stages in order to determine at least one combustion related parameter from detected ionization currents in the combustion chamber (22). The control unit (ECM) communicates with the ignition module via at least one bi-directional communication wire (K.sub.CQ or K.sub.KI). Via the communication wire the control unit activates the detection in the ignition module, and the ignition module sends a signal corresponding to the magnitude of the detected parameter to the control unit on the same communication wire. Activation and transfer of parameter data is conducted sequentially over the communication wire.

Abstract: An injector drive circuit capable of driving an injector of an internal combustion engine without using a DC-DC converter expensive. The injector drive circuit includes a power circuit for converting a voltage outputted from a magneto mounted on the engine into a DC voltage, a capacitor charged with a voltage accumulated in a voltage accumulator, a drive current feed circuit for applying a voltage across the capacitor to a solenoid coil to feed a drive current to the solenoid coil when it is fed with an injection command signal, and a holding current feed power supply section for feeding the solenoid coil with a holding current required for keeping a valve open after the drive current fed from the capacitor to the solenoid coil passes a peak value.

Abstract: To provide a fuel supply apparatus capable of preventing seizure of a plunger by preventing deformation of a cylinder caused by attaching attachment parts, and capable of being decreased in size, respective attachment parts of a fuel inlet, a delivery valve and a pressure regulator are threadably attached to a housing on a same cross-sectional plane orthogonal to an axis of a high pressure fuel pump, and imaginary extended regions extending seat surfaces of the housing in a direction of attaching thereof, are disposed outside of an outer peripheral surface of a cylinder. Accordingly, even when the attachment parts push the seat surfaces in threadably attaching the respective attachment parts to the housing, almost no axial forces are exerted on the cylinder. Therefore, an inner peripheral surface of the cylinder can be prevented from being deformed, and a sliding clearance between the cylinder and a plunger is prevented from being reduced in size.

Abstract: The invention is directed to a method of avoiding an erroneous fault announcement when diagnosing a tank-venting system for a motor vehicle having an internal combustion engine. In the method a change in elevation is determined at which the motor vehicle is operated during the diagnosis and this change in elevation is considered in the determination of the diagnostic result.

Abstract: A closed crankcase ventilation system for a turbocharger internal combustion engine which uses differential pressure between the turbo compressor inlet and the crankcase to force blow-by gases through a separation device. The zone of low pressure of the turbo compressor inlet is located at the innermost diameter of the compressor inlet shroud. The difference between the pressure in the compressor inlet and the crankcase creates a vacuum which pulls gas from the crankcase into the ventilation system. The ventilation system includes a high restriction separator for removing oil from the blow-by gases. A control valve bypasses the separation device when insufficient pressure differential exists to drive the separator.

Abstract: A spark ignition system for an internal combustion engine has a capacitive discharge (CD) system connected to a coil-per-plug (CCP) magnetic core-coil assembly. The spark ignition system is connected to a spark plug and is adapted to initiate an ignition wherein a spark is produced across the gap of the spark plug. The spark ignition system includes a magnetic core-coil assembly having an amorphous metal magnetic core, a primary coil and a secondary coil for a high voltage output to be fed to a spark plug. The CD system is charged and rapidly discharged through the primary coil of the magnetic core-coil assembly using a silicon controlled rectifier (SCR) as the switch. Operation of the SCR is controlled by circuitry that controls the firing of the spark ignition system. The magnetic core-coil assembly acts as a pulse transformer, so that voltage across its secondary coil is related to the turns ratio of secondary to primary.

Abstract: Ignition system componentry which may be coupled or stacked with a conventional high energy ignition system with an ignition storage capacitor coupled to the ignition coil including an electronic controller provided as responsive to the current flow through a transmission ignition coil. A discharge switch is connected in a circuity for discharging the storage capacitor into the ignition coil, the discharge switch being coupled to the electronic controller for controlling the charging and the discharging of the storage capacitor in cooperation with the conventional HEI ignition system using the interruption of the current to the ignition transformer in the conventional system for generating a trigger signal for the capacitive discharge assembly in cooperation with the HEI system upon which it is stacked for generating high energy spark producing potentials optimized for the internal combustion engine.

Abstract: A heating system has a modular section which can be converted to use as a store or boiler and to burn either solid or liquid and gaseous fuels. The system can be further expanded by addition of more than one module to increase the heating capacity of the system.

Abstract: A feeding bottle for infants useful for travelling and including a storage compartment for the nipple and a heater. The bottle includes an outer wall with an opening for the nipple at a first end and which turns inwardly at the opposite end defining a second opening, the wall terminating to form a closed portion within the bottle. The bottle thus includes a first storage space for the feeding material and a second storage space for the heater and for a nipple.

Abstract: This invention relates to heating apparatus and particularly compact heating apparatus fuelled by a flammable fluid such as gas in which a visible flame is provided. The appearance of the visible flame and the fireplace setting within the heating apparatus is enhanced by the provisions of a reflective means positioned behind the fuel assembly to reflect an image of the assembly and/or the flame towards a viewing port in the front of the heater. Additionally or alternatively, the heater apparatus provides an exhausting of the emissions of the primary combustion directly into the room in which the heater is housed to return much of the otherwise exhausted heat into the room. The exhaust is put through a secondary combustion chamber including or comprising a catalytic converter before being exhausted into the room.

Abstract: A solar collector tracking system that has a solar collection device having multiple lens assemblies mounted on its front surface. An exoskeleton structure is secured to the rear surface of the solar collection device and it is pivotally secured about a horizontal axis to the front end of an azimuth platform assembly. A hydraulic elevation actuator is pivotally mounted in the azimuth platform assembly about a horizontal axis and the front end of its piston rod is pivotally connected to the rear surface of the solar collection device and this allows it to be pivoted approximately 90 degrees between a vertical operating position and a horizontal storage position. The azimuth platform assembly is journaled on the top end of a tower extending up from the ground. A tubular post is rigidly secured to the top end of the post. A drive head extends horizontally from the tubular post and it has a pivot pin that extends upwardly therefrom.

Abstract: A disposable package, tape, and cassette are provided which makes it possible to hold and disperse therefrom liquid, flowable formulations including aqueous formulations (solutions or dispersions with particles less than 0.25 microns in diameter) of a pharmaceutically active drug. In one embodiment formulation is packaged in individual dosage unit containers which containers are preferably interconnected. The package is designed to be integrated into a cassette which can be loaded into a dispersing device capable of individually opening dosage unit containers and aerosolizing the contents through a porous membrane, into a mouth piece on the cassette, for delivery to a patient. In addition to and alongside of each porous membrane, the package may include one or more openings through which air is forced in order to aid in avoiding the accumulation of aerosolized particles.

Abstract: The oxygen breathing system with programmed oxygen delivery comprises a breathing circuit which a user exhales into and inhales from and a source of oxygen which delivers oxygen to the breathing circuit at a programmed rate. The oxygen is supplied at a high rate during the initial period of operation and at a low rate during the remaining period of operation. An overpressure relief valve in the breathing circuit opens during the initial time period because of the high oxygen delivery rate thereby flushing from the breathing circuit the nitrogen initially residing in the lungs of the user and in the breathing circuit. As a result of the flushing, the oxygen content in the breathing circuit approaches 100 percent at the end of the initial period and remains near this level during the subsequent time period.

Abstract: A device is provided for emptying a metering chamber of a powder dispenser. The dispenser includes an expulsion channel passing through the metering chamber and a device for delivering an air flow which is intended to pass along the expulsion channel to empty the metering chamber when the dispenser is actuated. A flow device is adapted to configure the air flow in such a manner that it empties the metering chamber completely. The flow device is disposed in the expulsion channel upstream from the metering chamber in the flow direction of the air flow.

Abstract: A combination mouth and nasal mask (40) for assisted respiration or CPAP is disclosed.The combination mask (40) has a frame (42) to the rear side of which is mounted a separate nasal cushion (44) and mouth cushion (46). Both the nasal cushion (44) and the mouth cushion (46) separately form a rolled edge seal around the patient's face in the vicinity of the nose and in the vicinity of the lips. Inlet air is communicated from within the housing (48) to the mouth chamber, circumscribed by the mouth cushion (46) by means of one or more interconnecting tubes (62).The proportion of air communicated to the mouth chamber (48) is controlled by the sizing and number of the tube(s), thus providing for free flow of air, restricted flow of air and pressure equalization, or zero flow of air.A mouth mask (10) for assisted respiration or CPAP also is disclosed.

Abstract: A method and apparatus are provided for ventilation of patients during general anesthesia. Breathing gas is supplied to the patient during anesthesia at a controlled volume above the functional residual capacity of the patient's lungs. The patient is allowed to spontaneously respire when the volume of breathing gas is above the functional residual capacity. The pressure of the breathing gas is periodically reduced to facilitate expulsion of carbon dioxide-containing gas from the patient. The system promotes alveolar ventilation, carbon dioxide excretion, oxygenation and respiratory monitoring in patients who receive general anesthesia.

Abstract: A patient ventilator is connected with two stand-by switches wherein activation of both switches is required for stopping the ventilating function. The preferred stand-by switches are in the form of membrane switches in which a conductive dome is positioned and spaced between respective layers having electrical traces thereon cooperating with the dome for defining the switches. The application of manual pressure closes the spaces between the layers and activates both switches.

Abstract: An oxygen mixing arrangement for or in a pressure support ventilator, in which a modular oxygen-providing assembly is selectively insertable into a greater respiration apparatus. Mixing accuracy and controllability is maintained by using gas supplies that have a wide range of pressures. Further, oxygen leakage is minimized by connecting the modular oxygen-providing assembly at a point of the respiration circuit of the greater respiration apparatus that is downstream from a valving arrangement normally used for venting patient exhaust flow and for controlling system pressure by venting excess gas flow to the ambient atmosphere.

Abstract: A resuscitator is provided with an integral carbon dioxide detector for indicating the presence of carbon dioxide in a patient. The carbon dioxide detector is a conventional pH sensitive chromogenic compound that is positioned in the breathing circuit to permit a rapid indication.

Abstract: A filter is disclosed having a layer of electret filter media or triboelectric filter media immediately adjacent or in intimate contact with one, or both sides, of a layer of hydrophobic media. Such filter is placed in communication with the upstream and/or downstream side of a mechanical electronic or electrostatic filter to solve problems present in the prior art. Additionally, a medical ventilator filter and system using such a filter is disclosed.

Abstract: Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media.

Abstract: A gamma ray collimator for use in a cardiac inspections system is disclosed which resolves energetically unperturbed gamma rays emitted from a patient and removes inelastic scattered gamma rays. A plurality of collimator elements each have walls, with each wall defining a plane comprised of a first material layer covered by a second material layer and absorbing inelastic scattered gamma rays, the planes being parallel to a central longitudinal axis in each of the collimator elements. The walls of each collimator element define an elongated longitudinal passageway having open ends through which the energetically unperturbed gamma rays enter and leave. The first material layer has a large absorption coefficient for gamma rays, and the second material layer has a large absorption coefficient for inelastically scattered gamma rays generated in the first material layer responsive to gamma rays emitted from the patient.

Abstract: An adjustable male condom securely retains the male condom on the penis of the wearer, thereby effectively preventing unwanted pregnancy and protecting against communicable diseases transmitted by the exchange of bodily fluids. The adjustable male condom includes a flaccid pouch made of an elastic, thin, disposable film material that is impervious to bodily fluids. The flaccid pouch includes an elongate, hollow, generally cylindrical body defining a longitudinal axis and having a first end and a closed second end. The adjustable male condom further includes a flaccid pouch harness attached to the first end of the body of the flaccid pouch. The flaccid pouch harness includes an annular retaining ring and a pair of elongate retaining straps. Each of the retaining straps has a first end attached to the retaining ring and a second end that remains unattached. Preferably, the retaining ring has a gap formed therein between the pair of retaining straps.

Abstract: There is provided a novel drape for covering surgical equipment, particularly but not exclusively for covering elongate surgical equipment which flexes during use, such as an endoscopic camera cable. The drape comprises a sleeve and a ring-shaped former. The ring-shaped former is arranged coaxially inside the sleeve, the majority of the latter being multiply folded over and carried on the ring-shaped former. The proximal region of the sleeve contacts the radially outer periphery of the ring-shaped former and it is overlaid with successive sleeve layers arising from repeated 180.degree. folds in the sleeve. Pulling the distal region of the sleeve away from the former causes orderly unfolding of the sleeve by relative sliding of the outermost layer over the adjacent layer.

Abstract: A protective shield shaped to fit either the right or left ocular globe and formed sufficiently large to provide maximum protection of the globe. The shield has a proper vault at the cornea to minimize corneal abrasion and is formed with a flattened area at the edge where the shield will be positioned at the trochlea which is the cartilaginous structure positioned nasally and superiorally relative to the globe. A similar flattened area may also be formed along the edge of the shield at the temporal side where there is a lateral canthal tendon. The shields may be made with a peg or handle positioned to be at the juncture of the lid closure over the globe.

Abstract: A device (20) for preventing or reducing the passage of air through the mouth (22). The device (20) comprises a top lip member (26) and a bottom lip member (28) having a space (34) therebetween. The space (34) is configured such that, in use, when the top and bottom lips (22T & 22B) of a patient are forced through the space (34), the top and bottom lip members (26 & 28) squeeze the top and bottom lips (22T & 22B) together thereby substantially sealing the mouth (22).

Abstract: Tissue surrounding a bodily conduit, such as a urethra, is thermally treated while preventing restrictions of the bodily conduit due to heat-induced shrinkage of collagen rich tissue surrounding the bodily conduit. A select volume of collagen-containing tissue surrounding the urethra is heated to destroy the tissue and to cause the tissue to be capable of being plastically remodeled into a selected shape. The selected shape is defined while the tissue is heated, and the tissue is allowed to cool while continuing to define the selected shape to cause plastic remodeling of the tissue into the selected shape. The method also includes performing a thermal therapy treatment without causing the surrounding tissue to exceed a collagen transition temperature of the tissue during the heating step of the treatment session.

Abstract: A method for improving blood flow in the heart provides a catheter system with an outer catheter defining at least one lumen and an inner catheter defining at least one lumen with proximal and distal portions. An introducer is coupled to the distal portion of the inner catheter. The introducer has a tissue piercing distal end. A resistive heater element is positioned in the introducer. The catheter system is introduced into a patient's vasculature. The inner catheter is then introduced through the a lumen of the outer catheter to a selected heart site. The tissue piercing distal end of the introducer is then advanced into an interior of the heart at the selected heart site. Energy is delivered to the selected heart site from the resistive heater element to create a blood conducting pathway and/or stimulate angiogenesis.

Abstract: A hair twist as a flexible retainer for selecting a degree of tension for holding hair selecting a gentle and loose hold, or a tight hold. The hair twist comprises a composite of sheets of fabric, sponge towel, and carpet padding with a wire core all rolled into a cylinder. The cylinder is placed straight under a pony tail gathered at the back of the head, and the cylinder is twisted in place about the pony tail.

Abstract: A decorative hair accessory with a decorative member which has an elastic component and two free ends with an attachment mechanism at each free end to allow the decorative member to form a continuous decorative elastic band or to connect to itself and form a loop on each end. Another embodiment of the decorative hair accessory is a comb with at least one elongated opening disposed longitudinally in the spine to receive one or more removable decorative members. These decorative accessories can be combined to form a variety of hair accessories which have a pair of combs removably attached to a plurality of elastic decorative members.

Abstract: A dental floss holder, having a floss dispensing function, a floss holding function and a floss cutting function, is disclosed. In the holder, the floss holding arm, having two floss guide stems, has a structure agreeable with an oral cavity. In addition, an externally-threaded floss chamber is closed by an internally-threaded cap. A floss drum, held on a shaft in the chamber, is normally stopped by a compression force generated by both the chamber and the cap when the cap is fully tightened on the chamber. However, the floss drum is selectively released from the compression force and is rotatable around the shaft when the cap is loosened. In the floss holder, the free end of the floss is firmly fixed by an internally-threaded fixing plug movably engaging with an externally-threaded projection, thus being almost completely prevented from being unexpectedly released while drawing between the teeth. The floss holder also has a cutter used for removing a used part of the floss.

Abstract: A cleaner composition for removing from within a microelectronic fabrication a copper containing residue layer in the presence of a copper containing conductor layer, and a method for stripping from within a microelectronic fabrication the copper containing residue layer in the presence of the copper containing conductor layer. The cleaner composition comprises: (1) a hydroxyl amine material; (2) an ammonium fluoride material; and (3) a benzotriazole (BTA) material. The cleaner composition contemplates the method for stripping from within the microelectronic fabrication the copper containing residue layer in the presence of the copper containing conductor layer.

Abstract: A adjustable knee support device for use with a walker employs a support platform, at least one positioning assembly, and a bracing assembly. The positioning assembly includes at least one connector construction and at least one bolstering construction. The connector construction and bolstering constructions are adjustable, allowing the height of the support platform to be changed. The support platform may be alternately used to provide left leg support and right leg support, as needed. The bracing assembly is pivotally attached to the support platform and automatically adjusts to ensure that the device is maintained securely in any chosen orientation. The device may be attached and removed without tools or modification to an existing walker.

Abstract: An apparatus is provided for transporting water from an awning on a recreational vehicle to a location remote from a door on the vehicle. The awning comprises a frame mounted to the vehicle and a tarp mounted to the frame. The tarp extends downward away from the recreational vehicle and defines a channel remote from the recreational vehicle which is tilted to a first side and has a first outlet at the first side. A catch basin is composed of a water-impervious material and has a side wall, a bottom panel secured to the side wall in water-tight engagement, a top opening defined by the side wall and a cavity disposed within the side wall and above the bottom panel. A bottom opening is disposed in the bottom panel. A tube has a first tube end, a second tube end and an internal chamber. The first tube end is secured in water-tight engagement to the bottom panel at the bottom opening such that the cavity is contiguous with the internal chamber. The second tube end is positioned remote to the door.

Abstract: A combination playyard and canopy assembly is provided. The playyard includes a top frame having first and second side rails and first and second end rails that define an opening. The canopy includes a mounting clip, frame members, and a cover. The frame members are pivotably coupled to the mounting clip for movement about a common pivot axis and the cover is attached to the frame members. The frame members are pivotable relative to the mounting clip between a first position in which the cover extends over the opening and a second position in which the cover is moved away from the opening to allow access to the interior region of the playyard. The mounting clip includes deformable members snapped onto the top frame to mount the canopy to the top frame. The bottom perimetral edge of the cover is attached to the top frame so that the cover encompasses the entire top frame when the frame members are in the first position.

Abstract: A circuit for driving an electromagnetic solenoid valve, used as a fuel injector in an internal combustion engine, having a needle valve biased in a closing direction by a spring and a solenoid which moves the needle valve in an opening direction when energized to inject fuel into a cylinder of the engine. The circuit includes a first booster which boosts battery voltage to a first voltage to charge a capacitor. The charged voltage is applied to the solenoid for a time period to cause the needle valve to move in the opening direction. The circuit includes a second booster which boosts the battery voltage to a second voltage, less than the first voltage, to be supplied to the solenoid to maintain the first current, enabling the period of large current application to be freely determined to ensure reliable valve operation, whereby the fuel injection can be reliably effected.

Abstract: A system for regulating flow of fluid through a flow line, such as a supply line, the line having a flow controller such as a valve, the system having a sensor for generating a signal in response to a parameter, a transmitter for transmitting a corresponding signal to a receiver at a remote location, a receiver for receiving the signal from the transmitter, an actuator for operating a regulator in response to the signal received by the actuator for operating the valve or other flow regulator.

Abstract: A valve assembly is provided including a housing having an opening wherein a cartridge is inserted. The housing has axially aligned inlets and outlets for hot and cold water. The cartridge includes a stationary sleeve containing a rotatable stem member. The stem member carries a compound seal having a first primary sealing portion for sealing the inlet of the stationary sleeve and a secondary seal portion for separating first and second chamber areas of the stem member. Preferably the outlets of said moveable stem and said stationary sleeve are substantially L-shaped, and inverted L-shaped respectively, which are selectively alignable to provide for an increased volume of water through the valve assembly. The housing includes a dividing dam in the outlet splitting the outlet in two.

Abstract: A vacuum breaker for use in a fluid supply system is provided. The vacuum breaker comprises a body having an interior, a fluid inlet, a fluid outlet, and an atmospheric air vent. The body is adapted to permit fluid to flow through the interior from the fluid inlet to the fluid outlet. A first seat disposed within the interior of the body. A bonnet having a second seat communicates with the air vent and the interior. A displacable float cup is disposed between the bonnet and the first seat. The float cup adapted to be sealingly seated against the second seat when the vacuum breaker is subject to an open flow condition, and to be sealingly seated against the first seat when the vacuum breaker encounters a pressure loss condition. Gaskets are provided to enhance the seal at the first and second seats. Both seats are above a water level within the body of the vacuum breaker. At the open flow condition the float cup seals the air vent and at the pressure loss condition the float cup opens the air vent.

Abstract: A pneumatic cartridge valve has supply inlet and consumer outlet passages provided on the end face of a valve cylinder and a control knob by rotation of which either the flow of air to exhaust or the passage of air from the supply to the consumer may be adjusted.

Abstract: The present invention provides an apparatus and methods for controlling gas pressure within a semiconductor process chamber. The apparatus comprises a throttle valve 32 positioned downstream of the process chamber outlet for controlling gas flow therethrough. The throttle valve includes a valve body 41 having a through-hole and a plug 44 movably disposed within the valve body for controlling gas flow through the through-hole. The throttle valve incorporates an abrasive element 86 disposed within the valve body in abrading contact with an exposed surface 89 of the plug. The abrasive element effectively removes gas deposited onto the exposed surface of the valve plug during operation of the throttle valve.

Abstract: A cover is provided, preferably for securing valves, propellers, door knobs and the like. The cover entails a hinged plate having two sections. Each section contains an indentation which, when the sections are closed, forms an aperture. A pair of arms may depend from each section in alignment with the indentations. When the sections are closed, the arms will form a hollow column in alignment with the aperture. The hollow column will also preferably contain a constriction, preferably formed by a pair of lips extending inwardly from each arm. The sections will also contain sidewalls rising from the sections opposite the hollow column if it is present. A cap is provided which will fit over the sidewalls. A tongue and groove mechanism may be provided to allow the cap to engage the sidewalls and the sections to which they are attached. A plurality of locking apertures may also be provided in the sections and the cap so that the cover may be locked with a padlock.

Abstract: A liquid level control apparatus for a flush tank includes an upstanding fill tube integral at its upper end with a valve housing carrying a flexible resilient pinch tube valve member. The valve housing defines a conduit which communicates with a downwardly extending tube parallel to the fill tube. A float has portions respectively receiving the fill tube and the downwardly extending tube therethrough so that the float slides vertically along the tubes as the water level in the tank varies. In one embodiment, an actuator rib on the float fits in a slot in the housing to directly engage the pinch tube valve member, and in another embodiment an actuator pivots on the housing and is coupled by linkage to the float. In the one embodiment an arresting flange on a resilient portion of the float engages an arresting flange on the fill tube for arresting upward movement of the float until the tank is full to provide a snap-action shutoff of the valve.

Abstract: An ammonia excess flow valve has a seal ring (24) slidably positioned around at least two retainer vertical members (22B). A disk (26) has a disk central opening (26A) and a disk pin opening (26B) therethrough. The disk (26) is positioned adjacent to and below a retainer (22). A conduit (28) sealably connected to the disk (26) over the disk pin opening (26B) extends upwardly therefrom. The conduit (28) functions to permit the ammonia excess flow valve (10) to be reset by equalizing pressures on both sides of the disk (26) once excess flow that trips the ammonia excess flow valve (10) is remedied, minimizing creation of vapor.

Abstract: An safety valve includes a housing for defining a fluid flow passageway having a spring loaded seat body and spring mounted therein. The seat body is held in an open position by the spring and is composed of an elastomer material. According to the novel method of using the safety valve, when fluid flows against the seat body a resulting drag force causes the spring to compress. When the fluid flow reaches a predetermined excess flow rate level, the seat body sealingly engages the flow passage to substantially inhibit the flow of fluid except for a small by-pass flow passing downstream via a small channel disposed within the seat body.

Abstract: In a high-pressure shut-off valve, in particular for a hydraulic pressure system having a relatively high liquid delivery rate, the pressure device of the valve body has a plurality of back support rings arranged as a stack and moveable essentially in the axial direction, i.e., in the direction of the shut-off pressure, forces the valve body onto the valve seat, such that neighboring back support rings bear against one another, causing the valve body to lift from the valve seat, whereas in the shut-off position, the neighboring back support rings inside the hydraulic system, which is under a relatively high shut-off pressure, are at a slight spacing from one another.

Abstract: A pressure balanced hydraulic coupling for use in undersea drilling and production operations is shown. The coupling has radial passages connecting between the male and female members such that fluid pressure is not exerted against the face of either member during coupling or uncoupling. The female member has a split body with a first part and a second part, each having a longitudinal passage and a radial fluid passage. A radial seal is positioned on the junction between the first and second parts of the female member body to facilitate removal and replacement of the radial seal when the split body is disassembled. The male member may be inserted through the first and second parts of the female coupling member, thereby establishing fluid communication between the coupling members in a direction transverse to the coupling member bores.