50results about How to "Wider tolerance" patented technology

A write-caching RAID controller is disclosed. The controller includes a CPU that manages transfers of posted-write data from host computers to a volatile memory and transfers of the posted-write data from the volatile memory to storage devices when a main power source is supplying power to the RAID controller. A memory controller flushes the posted-write data from the volatile memory to the non-volatile memory when main power fails, during which time capacitors provide power to the memory controller, volatile memory, and non-volatile memory, but not to the CPU, in order to reduce the energy storage requirements of the capacitors. During main power provision, the CPU programs the memory controller with information needed to perform the flush operation, such as the location and size of the posted-write data in the volatile memory and various flush operation characteristics.

A device for supporting chromophore elements suitable for emitting fluorescence in response to light excitation, the device comprising a substrate having a surface layer carrying the chromophore elements, forming a planar waveguide, and containing photoluminescent constituents which emit guided luminescence at the excitation wavelength(s) of the chromophore elements when they are excited by primary excitation light illuminating the surface layer. The invention is particularly applicable to biochip type devices.

An annular metal-to-metal sealing system, for use in wellhead systems and having many other uses, has a metal member defining an annular internal or external sealing surface for which sealing is intended. An annular seal body composed of high strength metal material is positioned in concentric relation with the annular sealing surface and is sufficient flexible to become spring loaded, typically during assembly, for continuous application of a spring force. The annular seal body defines one or more annular seal retainer grooves each having an annular soft metal sealing insert therein, with a portion thereof exposed for sealing engagement with the annular sealing surface. The spring loaded characteristic of the annular seal body applies constant force to maintain the soft metal seal insert in constantly energized sealing relation with the annular sealing surface and maintains effective sealing even when dimensional changes to the sealing surface occur due to temperature or pressure changes.

A write-caching RAID controller includes a CPU that manages transfers of posted-write data from host computers to a volatile memory and transfers of the posted-write data from the volatile memory to a redundant array of storage devices when a main power source is supplying power to the RAID controller. A memory controller transfers the posted-write data received from the host computers to the volatile memory and transfers the posted-write data from the volatile memory for transfer to the redundant array of storage devices as managed by the CPU. The memory controller flushes the posted-write data from the volatile memory to the non-volatile memory when main power fails, during which time capacitors provide power to the memory controller, volatile memory, and non-volatile memory, but not to the CPU, in order to reduce the energy storage requirements of the capacitors. During main power provision, the CPU programs the memory controller with information needed to perform the flush operation, such as the location and size of the posted-write data in the volatile memory and various flush operation characteristics.

The instant invention is an optical imaging system that produces images of acceptable quality of objects which are located at a wide variety of distances from the optical imaging system. A preferred embodiment of the optical imaging system includes an object (10), an auxiliary lens (12), a composite phase marsk (14) and a detector (18) arranged along an optical axis (20). Light from the object (10) is focused by the auxiliary lens (12) in tandem with the composite phase mark (14), producing an image (16) which is incident th detector (18).

An annular metal-to-metal sealing system, for use in wellhead systems and having many other uses, has a metal member defining an annular internal or external sealing surface for which sealing is intended. An annular seal body composed of high strength metal material is positioned in concentric relation with the annular sealing surface and is sufficient flexible to become spring loaded, typically during assembly, for continuous application of a spring force. The annular seal body defines one or more annular seal retainer grooves each having an annular soft metal sealing insert therein, with a portion thereof exposed for sealing engagement with the annular sealing surface. The spring loaded characteristic of the annular seal body applies constant force to maintain the soft metal seal insert in constantly energized sealing relation with the annular sealing surface and maintains effective sealing even when dimensional changes to the sealing surface occur due to temperature or pressure changes.

A low-insertion force electrical connector for implantable medical devices. The electrical contact includes a housing with a pair of opposing sidewalls each with center openings oriented generally concentrically around a center axis. The housing also includes a recess with a recess diameter. An inner coil is located in the recess with a coil axis generally co-linear with the center axis of the center openings. The inner coil includes an outer diameter less than the recess diameter, and an inner diameter greater than a center opening diameter. An outer coil is threaded onto the inner coil to form a generally toroidal-shape. The outer coil has an outer diameter less than the recess diameter, and an inner diameter less than the center opening diameter. The outer coil is radially expanded within the recess in response to engagement with contact rings on the implantable medical device, such that the outer diameter of the outer coil is at least equal to the recess diameter.

The present invention is directed to a photocurable composition for use as in particular an encapsulant, capable of curing at wavelengths greater than 290 nm. Reaction products of these photocurable compositions are opaque but good CTV is achieved. The composition is initially substantially transparent but becomes opaque on exposure to uv. The composition cures while the colour change takes place. In use, the photocurable composition may be applied, for instance, over the wire bonds that electrically connect a semiconductor device to a substrate to maintain a fixed positional relationship and protect the integrity of the electrical connection from vibrational and shock disturbances, as well as from interference from environmental contaminants.

A low-insertion force electrical connector for implantable medical devices. The electrical contact includes a housing with a pair of opposing sidewalls each with center openings oriented generally concentrically around a center axis. The housing also includes a recess with a recess diameter. An inner coil is located in the recess with a coil axis generally co-linear with the center axis of the center openings. The inner coil includes an outer diameter less than the recess diameter, and an inner diameter greater than a center opening diameter. An outer coil is threaded onto the inner coil to form a generally toroidal-shape. The outer coil has an outer diameter less than the recess diameter, and an inner diameter less than the center opening diameter. The outer coil is radially expanded within the recess in response to engagement with contact rings on the implantable medical device, such that the outer diameter of the outer coil is at least equal to the recess diameter.

A perpendicular magnetic recording write head has a flux conductor in contact with the write pole. The flux conductor is substantially wider than the write pole tip in the cross-track direction and has a blunt end that is recessed from the pole tip end. The region of the flux conductor where its blunt end is in contact with the pole tip is the “choke” point for the write pole, i.e., the point where the flux density is highest. The flux conductor enables the write pole to be made with no flare, or with a flare angle and throat height with a much wider tolerance, which substantially simplifies the manufacturing process. The write head may have a trailing shield and side shields that substantially surround the write pole tip and remove stray fields that may be produced by the flux conductor, so that regions of the recording layer other than the track being written are not adversely affected.

The instant invention is an optical imaging system that produces images of acceptable quality of objects which are located at a wide variety of distances from the optical imaging system. A preferred embodiment of the optical imaging system includes an object (10), an auxiliary lens (12), a composite phase marsk (14) and a detector (18) arranged along an optical axis (20). Light from the object (10) is focused by the auxiliary lens (12) in tandem with the composite phase mark (14), producing an image (16) which is incident th detector (18).

An electronic ballast for driving a gas discharge lamp includes an EMI filter, a bridge rectifier coupled to a DC bus without a conventional electrolytic capacitor, a passive valley fill circuit built as a network having 4 charge / discharge energy storage capacitors and 9 diodes (4C9C), and a resonant DC to AC high frequency inverter for powering gas discharge lamp. The 4C9D circuit divides the rectified peak voltage by four and the low output voltage of the circuit is used to provide continuous lamp operation. The result is a ballast having substantially improved power factor, total harmonic distortion, and current crest factor. The electronic ballast is provided with a dimming capability from a TRIAC based wall dimmer.

Embodiments of the present invention relate to a filtration device for use in filtration of a liquid, and disclose: a liquid receptacle having an open end and a closed end; a plunger body moveable at least partially within the liquid receptacle along an axis said axis extending between the open and closed ends, said plunger including a filtrate chamber in fluid communication with the liquid receptacle via a fluid filtering path and a filter disposed in the filtering path, and the device further including a slidable seal for inhibiting or preventing fluid flow across the seal during said plunger movement; wherein said seal includes a first skirt depending from the plunger at one end of the first skirt, said first skirt having an outer surface which in use slidably and sealingly abuts the vial, and having, at least in an uncompressed state, a generally annular separation between the skirt and the plunger body, which separation extends generally parallel to the axis. A second skirt, overlapping the first skirt, is disclosed also.

The optical receiver comprises an optical input path, a light detector array, an optical converging element and an information signal generator. The light detector array includes light detectors and a light-sensitive surface. Each light detector generates an electrical signal in response to light. The optical converging element is located to focus an optical input signal received via the optical input path to form a spot on the light-sensitive surface of the light detector array. The spot has an area less than the area of the light-sensitive surface but greater than the area of one of the light detectors. The information signal generator generates an electrical information signal from at least one of the electrical signals. In an embodiment, the information signal generator includes a summer that sums the electrical signals generated by the light detectors to generate the electrical information signal. In another embodiment, the information signal generator operates to identify the electrical signals generated in response to the optical input signal, to generate the electrical information signal from the electrical signals and to exclude from the electrical information signal ones of the electrical signals not identified as being generated in response to the optical input signal. In another embodiment, the information signal generator selects one of the identified electrical signals as the electrical information signal.

A mechanism is provided for use in a can opener comprising a body; rotationally mounting to the body about a first axis a drive wheel for engaging the rim of a can; rotationally mounting to the body about a second axis and drivably rotatable by the drive wheel, a cutter wheel; eccentrically mounting to said cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutter knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, to provide a cut therein as the opener orbits relatively therearound, wherein the cutting position is defined by a cutting interval corresponding to a segment of rotation of the cutter wheel in which the cutting knife is sufficiently proximal to the drive wheel to form the nip.

There is provided a mechanism for use in a can opener comprising a body; rotationally mounting to the body about a first axis, a drive wheel for engaging the rim of the can; rotationally mounting to the body about a second axis and drivably rotatable by the drive wheel, a cutter wheel; eccentrically mounting to the cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutting knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, and in which an electrical sensor can be used to reverse the position of the cutting wheel back to a start position and in which a mechanical sensor can be used in conjunction with a locking bar to advance the cutting wheel back to a start position.

There is provided a mechanism for use in a can opener comprising a body; rotationally mounting to the body about a first axis, a drive wheel for engaging the rim of the can; rotationally mounting to the body about a second axis and drivably rotatable by the drive wheel, a cutter wheel; eccentrically mounting to the cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutting knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, and in which an electrical sensor can be used to reverse the position of the cutting wheel back to a start position and in which a mechanical sensor can be used in conjunction with a locking bar to advance the cutting wheel back to a start position.

The present invention relates to an element of transition between a waveguide and a transition line on a substrate. The element of transition comprises a securing flange on the substrate, the flange being dimensioned so that at least, in the direction microstrip line, the width d of the flange is selected in such a manner as to shift the resonant modes away from the useful band. The invention is used particularly for circuits using SMD techniques at millimeter frequencies.

The invention relates to radiation curable compositions. The invention provides radiation curable optical fiber primary coating compositions comprising an oligomer, a reactive diluent monomer blend comprising at least two reactive diluents monomers, and at least one photoinitiator, wherein each of said monomers in said blend has the formula (I) wherein x is an integer of from 1 to 6; n is an integer of from 1 to 5; and each Y, which may be the same or different, is independently selected from the group consisting of hydrogen, a C1 to C12 alkyl group and an alkarylalkoxylated acrylate radical; and at least one photoinitiator; said reactive diluent monomer blend being substantially free of non-aryl reactive diluent monomers; wherein when an aryl reactive diluent monomer is present that has a molecular weight less than about 300, it is present at no more than about 10 wt. % of the total formulation.

A method of welding together the ends of outer pipe sections (16A, 16B) of pipe-in-pipe pipeline to be laid on a seabed employs an annular member (5) interposed between adjacent lengths of pipe. The annular member comprises a first axial part (11) which fits within the end of the first outer pipe section, and a flange part (12) which is interposed between the adjacent ends of the two lengths of outer pipe sections (16A, 16B) to be joined. The flange part (12) of the annular member (5) projects radially outwardly beyond the inside of the outer pipe sections (16A, 16B) and terminates radially inwardly of the outside of the outer pipe sections (16A, 16B), and provides some of the welding material for the joint.

A perpendicular magnetic recording write head has a flux conductor in contact with the write pole. The flux conductor is substantially wider than the write pole tip in the cross-track direction and has a blunt end that is recessed from the pole tip end. The region of the flux conductor where its blunt end is in contact with the pole tip is the “choke” point for the write pole, i.e., the point where the flux density is highest. The flux conductor enables the write pole to be made with no flare, or with a flare angle and throat height with a much wider tolerance, which substantially simplifies the manufacturing process. The write head may have a trailing shield and side shields that substantially surround the write pole tip and remove stray fields that may be produced by the flux conductor, so that regions of the recording layer other than the track being written are not adversely affected.

A CV conversion amplifier is provided that can secure a sufficient capacitance-to-voltage conversion gain and a sufficient amplitude range of an output voltage with a small consumption current. A capacitive sensor using the CV conversion amplifier is provided with low electric power, low noise, and a wide tolerance of input signals. The CV conversion amplifier accepts outputs, as inputs, from a first capacitance and a second capacitance whose capacitance is changed depending on a physical quantity and converts a capacitance value into a voltage.

The invention refers to a device and a tool for cold expansion of fastener holes. The advantages of the device and tool are in the possibility to control the degree of cold expansion. The device (61) comprises a hydraulic cylinder (27) in which a piston (26) with a piston rod (25) is placed, to whose end a mandrel (1) of a tool (60) is fixed. To flange (9) a threaded bush (7) of the tool (60) is immovably fixed, such that in an axial blind hole (55) of the piston rod (25), a linear displacement sensor (34), is positioned, immovably fixed to the hydraulic cylinder (27). A magnet (33) is designed for activating the linear displacement sensor (34), which is connected to the control block (38).

There is provided a mechanism for use in a can opener comprising a body; rotationally mounting to said body about a first axis, a drive wheel for engaging the rim of the can; rotationally mounting to said body about a second axis and drivably rotatable by said drive wheel, a cutter wheel; eccentrically mounting to said cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutter knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, and in which an electrical sensor can be used to reverse the position of the cutting wheel back to a start position and in which a mechanical sensor can be used in conjunction with a locking bar to advance the cutting wheel back to a start position.

There is provided a mechanism for use in a can opener comprising a body; rotationally mounting to said body about a first axis, a drive wheel for engaging the rim of the can; rotationally mounting to said body about a second axis and drivably rotatable by said drive wheel, a cutter wheel; eccentrically mounting to said cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutter knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can to provide a cut therein as the opener orbits relatively therearound, wherein said cutting position is defined by a cutting interval corresponding to a segment of rotation of the cutter wheel in which the cutting knife is sufficiently proximal to the drive wheel to form said nip; and provided to the cutter wheel, intermittent drive means for providing intermittent drive between the drive wheel and the cutter wheel when the cutting knife is in the cutting position such as to maintain the nip in place for a sufficient cutting interval to provide a full orbital cut around the cylindrical wall of the can.

The present invention relates to an element of transition between a waveguide and a transition line on a substrate. The element of transition comprises a securing flange on the substrate, the flange being dimensioned so that at least, in the direction microstrip line, the width d of the flange is selected in such a manner as to shift the resonant modes away from the useful band. The invention is used particularly for circuits using SMD techniques at millimeter frequencies.

There is provided a mechanism for use in a can opener comprising a body; rotationally mounting to said body about a first axis, a drive wheel for engaging the rim of the can; rotationally mounting to said body about a second axis and drivably rotatable by said drive wheel, a cutter wheel; eccentrically mounting to said cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutter knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, and in which an electrical sensor can be used to reverse the position of the cutting wheel back to a start position and in which a mechanical sensor can be used in conjunction with a locking bar to advance the cutting wheel back to a start position.

A two piston, free piston, alpha Stirling cycle machine has a compression piston with a cylindrical bore that is coaxial with the cylinders in which the pistons reciprocate. An expansion piston sealingly extends into both an expansion cylinder and into the cylindrical bore in the compression piston. The expansion piston has the same diameter within both the expansion cylinder and the cylindrical bore. A spring, preferably a gas spring, drivingly connects the pistons. The reciprocation of the expansion piston varies only the volume of the expansion space and the reciprocation of the compression piston varies only the volume of the compression space. The spring that drivingly connects the pistons allows the two pistons to be properly phased without a mechanical linkage so that they can operate in a thermodynamically effective phase over a range of strokes.