196results about How to "Little maintenance" patented technology

Improved method and apparatus for interlocking hemmed together edges of inner and outer vehicle body panels with an improved interlock joint. The inner panel blank is draw stamped and provided with PLP holes in a stamping press. A plurality of conventional hardware components are then welded to the inner panel. Then interlock holes are formed by a piercing tool moving through the inner panel border from its outboard to its inboard side while the inner panel is held by clamps and PLP pins. The hole piercing punch thus leaves cold worked upset material slightly raised inboard, rather than outboard, around the pierced interlock hole margin. Then the inner panel subassembly is married to the outer panel and transferred to a hemming station and again precisely clamped and positioned by PLP pins, whereupon hemming press gates are operable for hemming the flange lip of the outer panel over the inner panel border. The final hemming steel of each gate carries staking punches that individually strike a precision registered portion of such hemmed lip to deform it into locking engagement with the associated interlock hole. The upset material is thus flattened and accurately worked into embedment into the interior surface of the hemmed flange lip, rather than into the interior surface of the outer panel, thereby avoiding creating read through problems on the outer panel.

A system to measure fluid flow characteristics in a pipeline, meter, and methods includes a pipeline having a passageway to transport flowing fluid therethrough, a process density meter including at least portions thereof positioned within the pipeline to provide flowing fluid characteristics including volumetric flow rate, fluid density, and mass flow rate of the flowing fluid, and a fluid characteristic display to display the fluid characteristics. The process density meter includes a vortex-shedding body positioned within the pipeline to form vortices and a vortex meter having a vortex frequency sensor to measure the frequency of the vortices and to determine the volumetric flow rate. The process density meter further includes a differential pressure meter positioned adjacent the vortex-shedding body to produce a differential pressure meter flow rate signal indicative of the density of fluid when flowing through the pipeline. The process density meter also includes a thermal flow meter positioned adjacent the vortex-shedding body to produce a mass flow rate signal indicative of the mass flow rate of fluid when flowing through the pipeline. The process density meter produces an output of a volumetric flow rate, a flowing fluid density, and a mass flow rate to be displayed by the fluid characteristic display.

The invention relates to a heat exchanger arrangement for heating of air, with a heat exchanger (8) which is integrated into a refrigerant circuit (60), configured to be able to have refrigerant flow through it and able to be impinged on by air. The heat is transferred from the refrigerant to the air. The heat exchanger (8) exhibits two components (8a, 8b) configured to be segregated from each other. The first component (8a) is configured with a condensation surface and a heat-removal surface. The second component (8b) exhibits a supercooling surface. Between the components (8a, 8b) on the refrigerant side, a refrigerant phase separation element is placed. The heat exchanger is configured as a tubular heat exchanger with tubes situated in rows, wherein the first component (8a) is configured with at least two rows and the second component (8b) with at least one row.

A modular ductwork assembly decontaminates an air stream circulating within an heating, ventilation and air conditioning (HVAC) system. The assembly includes (a) an ionizing module for removing particulates from the air stream, (b) a sterilization module for neutralizing airborne pathogens present in the air stream, (c) an ozone treatment module for neutralizing odoriferous constituents or volatile organic compounds (VOCs) present in the air stream, optionally (d) baffles for slowing and disrupting the flow rate and promoting turbulence in the air stream traveling through the modules and optionally (e) a fan module for directing a treated air stream. Each of the modules is arranged substantially adjacent to at least one of the other modules.

The present invention provides a device for producing a water treatment solution from a solid chemical block for distribution into a water system selected from the group comprising an institutional water system and an industrial water system. The device includes a housing to contain the solid chemical block. A fluid, preferably water at ambient temperature, is introduced into the housing to dissolve the block and form a liquid solution that may then be dispensed into either an institutional water system or an industrial water system. A method of dispensing the liquid solution with the device is also provided.

A pipeline (12) for the transportation of a process fluid comprises an autonomous shut-off valve system comprises a shut-off valve (1) including a fluid powered valve actuator (2) moveable between a closed and an open position by means of pressure generated by the process fluid, a pressure tapping (3) in the pipeline upstream of the shut-off valve, a fluid connection to the pressure tapping arranged to deliver process fluid to power opening of the said shut-off valve, at least one pressure sensor (16) arranged in a hydraulic line extending from the pressure tapping, at least one control valve (8A, 8B, 8C) operable to permit or prevent flow of pressurised fluid to the shut-off valve actuator; and a controller (15) arranged to open and close the control valve. The control valve is commanded to open and close when pressure thresholds are reached, the pressure thresholds being detected by the pressure sensor and the control valve being commanded to close by the controller.

An insect and/or arthropod trapping device that generates its own attractants of carbon dioxide (CO2), and ammonia through the chemical reaction of adding a weakly acidic liquid such as vinegar (acetic acid) to solids such as baking soda (sodium bicarbonate), with the optional addition of urea and/or lactic acid. The liquids are mixed over a period of days onto the solids to generate CO2 in the vicinity of an insect/arthropod trap having glue boards that trap the insects and arthropods when they alight on the glue board. The attractants can be used with devices that utilize various combinations of other insect attractants and traps such as sound, light, scent, visual, electrical, chemical, sticky surfaces, mesh nets, etc., to further attract and trap or kill insects and/or arthropods.

An object of the invention is to provide a memory device that is capable of writing large-capacity data into and reading them from a secure area within a short time.

A memory device 10 provided by the invention is furnished with: a memory area 51 directly inaccessible from an electronic device 60; a secure control section 42 that manages access to this memory area 51; and a device control section 20 that communicates with the electronic device and transfers a request of the electronic device to the secure control section42. The secure control section 42 temporarily delegates, to a device control section 20, 21, access rights to the memory area 51 if there is a write/read request of large capacity data from an authenticated electronic device 60, and the device control section 21 to which this access rights have been delegated writes/reads data sent from the electronic device 60 into/from the memory area 51 by burst transfer. Because of burst transfer of data, the number of times of command interchange reduces, making the process faster.

Dosed proportioning and cutoff of combustion air into the primary heating space of a horizontal coke oven is provided by apertures in the ceiling of the coke oven chamber, the apertures covered with a withdrawable cover device which controls the amount of air admitted, manually or in an automatic mode. By way of this device, ventilation of a coke oven chamber with primary air can be so controlled that primary air is introduced in an exactly dosed manner and, depending on its place of installation, exactly distributed into the primary heating space of a coke oven chamber.

A low friction flat-lapping abrading apparatus and method for releasably attaching flexible abrasive disks to a flat-surfaced platen that floats in three-point abrading contact with flat-surfaced workpieces that are attached to three rotary spindles. The rigid equal-height flat-surfaced rotatable fixed-position workpiece spindles are mounted on a flat abrading machine base. They are positioned to form a triangle to provide stable support of the floating platen. All three spindle-tops are co-planar aligned to provide a precision-flat reference plane for mounting of the workpieces. The lapping operation has very high abrading speeds and very low abrading forces. The lightweight but strong lapping machine employs a pivot-balance structure where the weight of the drive motor is used to balance the weight of the abrading platen. Use of low-friction air bearings provides the capability for precision control of the abrading forces. The lapping machine is robust and well suited for a harsh abrading environment.

A universal microelectromechanical (MEMS) nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer to make multiple sensing capability on a single MEMS fabricated device. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables and producing more than one type of sensor for one or more significant parameters that need to be monitored.

In a magnet-exciting rotating electric machine system, every magnetic salient pole group to be magnetized in a same polarity is collectively magnetized by a magnetic excitation part. In the magnetic excitation part, a main magnetic flux path in which a magnetic flux circulates through the armature and a bypass magnetic flux path are connected to the field magnet in parallel. Magnetic flux amount in each path is controlled by mechanical displacement. Thereby, the rotating electric machine system and the magnetic flux amount control method in which magnetic field control is easy are provided. Also, means and method are provided so that a power required for the displacement may be made small by adjusting magnetic resistance of the above magnetic flux path.

A water purification apparatus connected to a water system includes a hopper for holding chemical tablets on a perforated bed and an underlying basin. A spray head is detachably connected to the perforated bed and sprays water onto the tablets and parallel to the perforated bed. The basin receives the water through the perforated bed. Because the hopper allows for the use of different spray head designs, the rate at which water is introduced to the tablets, and thus the chemical output, may be modified by replacing one spray head for another having a different number of spray nozzles or having spray nozzles of a different size or shape. Consequently, the hopper of the present invention may be used for delivering the proper concentration of a variety of water treatment chemicals.

An organopolysiloxane containing at least two silicon-bonded hydroxyl groups, the reaction product of an amino-containing organoalkoxysilane with a dicarboxylic anhydride, and an organopolysiloxane containing long-chain alkyl and alkoxy groups, but free of hydroxyl groups are emulsified and dispersed in water in the presence of a surfactant to form a coating emulsion composition.

A method and apparatus for releasably attaching flexible abrasive disks to a flat-surfaced platen that floats in three-point abrading contact with three flat-surfaced rotatable fixed-position workpiece spindles that are mounted on spherical-rotation two-piece spindle-mount devices that are attached to a nominally-flat abrading machine base. The spindle-top flat surfaces are precisely co-planar with each other. The three spindles are positioned to form a triangle of platen supports where the rotational-centers of each of the spindles are positioned at the center of the annular width of the platen abrading-surface. Flat surfaced workpieces are attached to the spindles and the rotating floating-platen abrasive surface contacts the workpieces to perform single-sided abrading on them. The disk abrasive surfaces can be re-flattened by attaching abrasive disk-type components to the three spindles that are rotated while in abrading contact with the rotating abrasive disk. There is no wear of the abrasive-disk protected platen surface.

The invention relates to a drive train having a twin-clutch transmission and to a method for controlling the same.

A system comprising a rotor blade (1), in particular of the tail rotor of a rotary wing aircraft, in a fiber-reinforced composite design, with a blade section (5) and with a coupling section (9) for attaching the rotor blade (1) to the hub of a drive device, and comprising a separate sleeve-shaped control tube (40) with an essentially hollow-cylindrical shaft (41), with an also essentially tubular tie section (56) to tie the control tube (40) to the rotor blade (1) by sliding it onto its coupling section (9), is improved in that the coupling section (9) of the rotor blade (1) and the tie section (56) of the control tube (40) comprise a cross-sectional shape for positive-locking interconnection of the rotor blade (1) and the control tube (40).

A wave power converter employing independently staged surge energy capture for converting useful wave surge energy to electric power over a relatively broad range of surf conditions. The wave surge power converter includes an inclined ramp with several openings for receiving wave water into several independent chambers for capturing and retaining surge water in hydraulic isolation, a check valve in each chamber permitting water to flow into a conduit and a generator for producing electrical power from water flow in the conduit. The apparatus is suitable for low-cost manufacture, offers simple robust operation suitable for underdeveloped regions of the world, may be fabricated from commonly-available components, requires few moving parts and no valuable (lootable) components other than a generator, and is self-flushing for low maintenance operation.

An agricultural cutting device has knife bar sections with section knife blades. A drive with phase offset drives the knife bar sections at least temporarily in opposite directions. The section knife blades interact scissor-like with counter knives. The knife bar sections have adjacently positioned bar ends. When the knife bar sections move, a gap of varying size is formed between the bar ends. A mowing finger is arranged at the gap. A stationary knife blade with first cutting edges is arranged at the mowing finger. The first cutting edges are arranged adjacent to the mowing finger and extend at a slant relative to a forward travel direction of the cutting device so that the cutting edges have a V-shaped arrangement broadening in travel direction. The knife bar sections have an outer knife blade attached to the bar ends whose cutting edges extend parallel to the travel direction.