32results about How to "Avoid compression set" patented technology

A cleaning unit, which can be incorporated in a process cartridge removably installable in an image forming apparatus, includes a lubricant applicator to apply lubricant to an image carrier, a first blade disposed upstream from the lubricant applicator in a direction of rotation of the image carrier with its distal end held in contact with the image carrier to remove residual toner remaining on the image carrier, a second blade disposed downstream from the lubricant applicator in the direction of rotation of the image carrier with its distal end held in contact with the image carrier to regulate the amount of lubricant applied to the image carrier, a temperature measuring member to measure a temperature of or near the second blade, a heater, and a temperature controller to control the heater to heat the second blade so that the measured temperature falls within a given set temperature range.

The invention provides an expansion compression type packer which comprises a sleeve and a packer center tube, a throttler and a check valve which are arranged in the sleeve. The throttler is arranged at the top end of the packer center tube; the check valve is arranged at the bottom end of the packer center tube; and an expansion rubber barrel, a compression rubber barrel, a retractable bracket and a compression rubber barrel bracket are sequentially arranged outside the packer center tube between the throttler and the check valve from top to bottom. A compression hydraulic cylinder of a compression type packer is saved; by additionally arranging the retractable steel sheet bracket, the rubber barrels are prevented from entering an annulus to form the jamming of a drilling tool after being compressed and deformed, the safety and the reliability of resisting the high temperature and the high pressure are improved, and the expansion compression type packer has low cost and high construction efficiency.

The invention discloses a pyramid-shaped lattice-enhanced cavity-type underwater sound-absorbing structure, which includes a cell, a pyramid lattice structure is arranged inside the cell, a cavity is arranged in the pyramid lattice structure, and a plurality of cell arrays are arranged Constitute a pyramid-shaped lattice enhanced cavity-type underwater sound-absorbing structure. The invention has excellent sound absorption performance and good water pressure resistance performance, and at the same time realizes the lightweight design of the underwater sound absorption structure, and is a multi-functional integrated structure of bearing-sound absorption-lightweight.

A joint on an aircraft, a bonding lead for use in such a joint, and a method of manufacturing such a joint. The bonding lead comprises an elongate conductive core with a pair of end faces at the extremities of its length. The conductive core is encapsulated along at least a majority of its length and at both end faces in a barrier layer typically formed from an elastomer. The lead is encapsulated along its length in the barrier layer apart from at a first contact region towards a first end of the bonding lead and a second contact region towards a second end of the bonding lead. A first electrical connector passes through a first hole in the barrier layer to engage the first contact region of the conductive core and provide an electrical connection between the conductive core and the first component; and a second electrical connector passes through a second hole in the barrier layer to engage the second contact region of the conductive core and provide an electrical connection between the conductive core and the second component.

A shock absorbing apparatus includes a flexible membrane defining an accumulator cavity, and a compression assembly defining a compression cavity. The compression assembly is disposed within the flexible membrane such that viscous fluid contained within the cavities may be exchanged therebetween by a damping orifice, fluid conduit and or valve mechanism. The accumulator cavity deforms in response to the application of a transmitted impact load, and is capable of storing and releasing potential energy in response to the application and cessation of the transmitted impact load.

The invention discloses a mounting device for an ultrasonic heat meter reflector, which comprises a press punch, a down pressing device and a positioning device, wherein the down pressing device comprises a bottom plate, left and right guide columns fixed at two ends of the bottom plate, a pressing plate movably sleeving the guide columns and a pressing head arranged on the pressing plate; the positioning device comprises a base fixed with the bottom plate, guide sleeves fixed on the base, and left and right positioning columns located in left and right guide sleeves, upper end surfaces of the left positioning column and the right positioning column are inclined planes with the same inclination and in bilateral symmetry and corresponding to inclined planes of left and right reflectors in a pipe segment body. The guide structure of the guide column is adopted to guide the down pressure to be uniform and stable, the horizontally-symmetrical and accurately-fixed positioning column structure is arranged on the fixed base, a limiting structure with the inclined plane is arranged on the positioning column, the three structures are supported and collaborated mutually, and the accurate corresponding mounting problem of the reflection surface of the reflector can be solved.

The invention specifically discloses a machining method of a high-precision step deep hole part, and solves the problems of weak straightness and incapability of guaranteeing the size and shape precision in a traditional boring process of the step deep hole part. The machining method comprises the following steps: (1) the deep hole part is divided into a part body I and a part body II; (b) an inner hole of the part body I is machined as a finished hole; the outer circle leaves a working allowance; then, an inner hole of the part body II is machined; the outer circle leaves a working allowance; and then, the part body II is welded with the part body I; (c) after welding, a plug is pressed in an outer end hole of the part body II; a center hole is formed in the outer end surface of the plug; and the outer circles of the part body I and the part body II are machined to reach the size of a finished product; (d) a guide cylinder is manufactured; and (e) the inner hole of the part body II is roughly bored and finely bored. The straightness of the part reaches the stated technical requirement; and the problem of deformation of a thin-wall part is prevented.

The invention discloses a hydraulic cold tube drawing bench, which comprises a main cylinder seat, a drawing die seat, a clamping dolly which is arranged between the main cylinder seat and the drawing die seat and is driven by a main cylinder, a core rod seat used for penetrating a positioning core rod, and an end which is fixedly connected with the main cylinder seat, the drawing die seat and the core rod seat sequentially on two independent section lathe beds; the main cylinder seat, the lathe bed, the drawing die seat, the lathe bed and the core rod seat are axially arranged. The inventionis characterized in that: the lower parts of the main cylinder seat, the core rod seat and the lathe beds are all provided with lateral displacement limit devices containing concave positioning grooves; the concave positioning groove consists of a bottom plate and two side baffles or consists of L-shaped pieces formed by a bottom plate and side baffles and arranged symmetrically along the longitudinal axis. The lateral displacement limit devices are fixedly connected with groundwork. The invention has the advantages that: by using the simple structure, the invention effectively overcomes compression deformation of the lathe beds, and has low cost, convenient installment and low requirement for the ground which can be widely applied to metallurgical industry to reduce or expand pipe blanks.

The combined solid wheel for rail transit vehicles is characterized in that it includes a wheel vulcanized body formed by vulcanizing the inner metal and the outer rubber and a flange connection plate that can be installed in cooperation with the axle, and the number of the wheel vulcanized body is two and Coaxially aligned, the flange connection plate is sandwiched between two wheel vulcanized bodies, and is detachably connected with the wheel vulcanized body. The outer diameter of the flange connection plate is smaller than the outer diameter of the wheel vulcanized body, and the flange connection The disc projects between the rubber layers of the two wheel vulcanized bodies. The invention provides a simple and reliable combined structure, easy to assemble and replace, can realize the non-linear radial stiffness of the wheel in the load-bearing process, improve the comfort of the vehicle, and has the function of stop and limit, and can realize the radial deformation of the wheel limit, improve the safety and reliability of vehicle operation. The invention also provides a method for designing the stiffness of a combined solid wheel for a rail transit vehicle.

A false tooth attachment (2) having a high resiliency with respect to a pressing force due to occlusion of teeth and giving a suitable sinking motion to a false tooth at the time of occlusion of teeth, comprising a magnet member (21) adapted to be attracted by a magnetic force to a root cap buried in a dental root, and a cap (22) covering the surface of the magnet member (21) which is on the opposite side of the surface thereof attracted to the root cap, the attachment being buried in a dental plate, the magnet member (21) having in the central portion of a rear surface (21c) thereof a recess (210), in which a projection (223) of the cap (22) of a hard resin is fitted in a contacting state, the projection (223) being elastically deformed and contracted due to an occlusion pressure, so that a circumferential portion (222) integrally molded with the body (22) of the cap (22) is moved slidingly on a side circumferential surface (13) of the magnet member (21) to cause the thickness of the false tooth attachment (2) to decrease, whereby the false tooth suitably sinks at the time of occlusion of the teeth to improve the resiliency and sense of use of the false tooth.