96results about How to "Frictional resistance" patented technology

A delivery system includes a sheath and a handle. The handle includes: a slide shaft having a threaded outer surface; and a hub assembly coupled to the sheath. The hub assembly includes: an inner slider having a thread tooth pivot support; a thread tooth pivotably mounted to the thread tooth pivot support; and a sleeve having a thread tooth press member pressing on the thread tooth, where motion of the sleeve relative to the inner slider pivots the thread tooth on the thread tooth pivot support to engage and disengage the hub assembly with the threaded outer surface.

Compact and transportable equipment that can be used for fracturing operations on gas or oil fields, includes, successively, a silo for storing polymer in powder form, a feed hopper of a polymer metering device, a device for metering out the powder polymer, a device for dispersing and grinding the polymer, and at least two volumetric pumps enabling the injection and metering of the polymer solution obtained in the mixer used for supplying at least one high-pressure fracturing pump.

A mounting system for providing horizontal adjustment to a device mounted on the mounting system. At least one first articulating arm is rotatably connected to a carriage assembly, where the carriage assembly is slidably engaged with groove guide of a wall plate. The wall plate is mounted to a wall or other similar surface, while at least one second articulating arm is also rotatably connected to the at least one first articulating arm at one end. At the other end, the at least one second articulating arm is operatively connected to a tilt assembly for tilting a device connected to the tilt assembly. The mounting system provides easy horizontal adjustment via sliding the carriage assembly along the groove guide(s) and via rotating the at least first and second articulating arms.

An instrument for minimally invasive surgery suitable for use with a manipulator comprising a tube provided at its first end with a mouthpiece wherein control means for the mouthpiece pass through the tube, and wherein at a second end of the tube opposite to the first end comprising the mouthpiece control organs are provided that are coupled with the control means for the mouthpiece that are passing through the tube.

A portable timepiece has a bezel rotatably disposed on a case body, and an elastically deformable gasket interposed between the case body and the bezel in an elastically deformed state to exert a frictional force on the case body and the bezel sufficient to maintain the bezel in a stationary rotational position though permitting the bezel to be manually rotated to any desired position by overcoming the frictional force. One or more lock members are movably disposed on the bezel and contact a slip-preventing part provided on the case body. A manually rotatable holding ring engages with the lock members and is rotatable in one direction to increase the contact pressure between the lock members and the slip-preventing part to thereby prevent unintended rotation of the bezel, and is rotatable in the other direction to decrease the contact pressure to thereby permit manual rotation of the bezel by overcoming the frictional force exerted by the elastically deformed gasket. In this manner, inadvertent rotation of the bezel is prevented by structure other than the gasket thereby preventing undue wear of the gasket.

An improvement of a folding knife locking mechanism with an adjustable wedge to remove blade slop. The present mechanism allows for smooth opening and closing of the blade by limiting friction against the blade as it rotates. This knife has a bearing system for low friction blade rotation. Also the leaf strap lock is arranged so that it only comes into contact with the blade at the start of opening and at the end of opening, further limiting the friction forces against the blade. Provided is also an adjustment wedge to remove blade lock slop. In the manufacturing process loose tolerances can be adjusted out using the adjustment wedge. Normal use wear against the stop pins and handles can cause some looseness of the blade which can also be removed by the adjustment wedge.

The invention relates to a snowmobile endless track belt of the type having a body made of an elastomeric material, an outer surface for contact with the ground and an inner surface provided with lugs for engagement with the snowmobile driving system and with at least one endless pathway that contacts a corresponding slide rail of the snowmobile suspension. The elastomeric material, in at least the area which is contacted by the slide rail, is composed of rubber and of a lubricating material so that friction generated between the slide rail and a driven belt is greatly reduced by the presence of such lubricating material in the elastomeric material.

The present invention relates to an antistatic article comprising a substrate or support having thereon at least one antistatic layer, wherein the antistatic layer comprises a conductive material having areas of patterned coverage. The present invention also relates to a display comprising a substrate having an electrically modulated imaging layer thereon, at least one electrically conductive layer, and at least one transparent antistatic layer, wherein said antistatic layer comprises a conductive material having areas of patterned coverage.

An adjustable support arm for a vehicle exterior rearview mirror assembly comprising a holder base adapted for mounting to the vehicle; a holder pivotally carried on the holder base; a pivot control unit included in the holder for engaging the holder base to resist rotation of the holder on the holder base; the pivot control unit including: a compression spring disposed within a retainer opening of the holder; a bushing carried on the compression spring for engaging a bearing surface in the retainer opening; and, a retainer carried in the retainer opening and coupled to the holder base to retain the compression spring and the bushing in the retainer opening, wherein the retainer is constructed and arranged to direct the bushing laterally against the bearing surface and the compression spring biases the bushing against the retainer in sliding engagement to resist rotation of the holder on the holder base.

A disposable articulated spacing device for the treatment of joints of the human body, particularly for temporarily replacing an explanted joint prosthesis, comprises at least one first member able to be secured to a first articulation end and at least one second member able to be secured to the other articulation end, both said members being pre-formed and made entirely of biological compatible and porous material suitable to be added with pharmaceutical and therapeutical products. The pre-formed members are reciprocally coupled in an articulated manner to maintain a suitable joint space and at least a partial articulation for the time necessary to perform the further implantation of a joint prosthesis. The biologically compatible and porous material is chosen among metals, metallic alloys, organo-metals, ceramics, glasses, plastics materials, bone cements and combinations thereof. The articulated spacing device maintains a suitable space in the joint seat while allowing considerable articulated mobility, and re-establishes suitable conditions of implantation of a new permanent joint prosthesis.

A ball joint assembly may include a housing having a cavity, a friction seat received within the cavity, and a ball stud having a ball that frictionally contacts the friction seat. In one embodiment, a friction control mechanism moves the friction seat within the cavity to adjust the friction between the ball and the friction seat. In another embodiment, both the cavity and an outer surface of the friction seat may be substantially frustoconically shaped.