515results about How to "Avoid insufficient friction" patented technology

A new power tong for rotating tubular members for make-up (connection) and break-out (disconnection) operations. In one aspect such a tong has at least one movable jaw with a smooth surface gripping element thereon and pre-load apparatus for applying a pre-load force to a movable jaw so that the jaw does not slip on a tubular to be rotated and so it does not mark or damage the tubular. In one aspect the pre-load apparatus includes a first pre-load device at one end of a movable jaw for breakout operations and a second pre-load device at another end of the jaw for make-up operations. In one aspect a power tong which has unique smooth surfaced jaw inserts made, e.g., of aluminum. In one aspect a single pivotable pre-load cylinder, fixed to rotary, pivots for pivotable connection to one jaw or the other. This can be done manually or a powered smaller piston/cylinder may be used to pivot the pre-load cylinder. In one aspect a jaw unit which comprises a jaw holder and a jaw movable with respect to said jaw holder, characterized in that said jaw is slidably mounted on said jaw holder.

A flat panel display stand has a base, a post, a resilient assembly and a holding bracket. The post is securely mounted perpendicularly on the base and has a channel defined inside the post and two guide slots formed through the post opposite to each other. The resilient assembly is mounted slidably in the channel of the post and has two friction feet and a coil spring. The friction feet are mounted respectively in the guide slots and generate adequate friction to hold the resilient assembly in place. The coil spring has an end secured in the channel and provides a resilient force to hold the resilient assembly in position. The holding bracket is connected to a flat panel display and is attached to the resilient assembly through the guide slots. The flat panel display stand is compact and facilitates adjustment of the position of the flat panel display.

A stand for supporting at least an operating handle and an insertion tube of an endoscopic apparatus is disclosed. The stand includes a hanger member and a post member. Said hanger member has a first shoulder portion adapted for supporting an umbilical cord of the endoscopic apparatus, an intermediate portion adapted for supporting the operating handle, a carrier portion adapted for supporting the insertion tube and a second shoulder portion adapted for retaining a distal end of the insertion tube in an upright position.

A mini-camera with an adjustable structure mainly includes a camera body, a support and at least one limiting element disposed at a connection between the camera body and the support. The limiting element provides the camera body with enough friction for adjusting the viewing angle of a camera lens relative to the support. A user can step-less adjust the view angle of the camera lens of the camera body, the user doesn't need disassemble the camera body or the support, and further the user cannot damage the connection between the camera body and the support for maintaining the outside beauty of the mini-camera.

An apparatus for dispensing plastic bags is disclosed. The apparatus includes a dispensing rack having a base, opposing sides, and a front portion. The opposing sides include tracks that accommodate a spindle capable of being inserted through a core of a roll of plastic bags and into the tracks such that the roll of plastic bags is seated in the dispenser rack and rotatable with respect to the spindle. The front portion of the dispensing rack is formed with a tongue which engages with a slit between bags on a roll and causes a bag to separate along a perforation. The front portion of the dispensing rack may also be formed with wedges which angle downward from the sides of the dispensing rack toward a lower portion of the tongue. When a bag is detached, the wedges catch the next bag and hold the next bag in place.

The invention discloses a circular steel tube concrete column and beam node connecting structure, which is characterized in that: the connecting structure comprises a node fastener, a bolt, a circular steel tube concrete column and a beam; the node fastener is composed of two sections of fastening rings and a joint, and the joint is in sleeve type and horizontally H-shaped type, the circular steel tube concrete column penetrates in the fastening rings and is fastened by the bolt, and the beam is connected by the joint on the fastener; the field installation is convenient without welding and the construction is rapid; the fastener is composed of two sections and is connected by the bolt after being fixed, and the circular steel tube concrete column is fixed by tightening force of the fastener; the circular steel tube concrete column is inserted in the sleeve type joint and is fixedly connected with the sleeve type joint by the bolt, and a concrete beam steel bar and a steel girder are welded with the horizontally H-shaped type joint; besides welding of the concrete beam steel bar and the horizontally H-shaped type joint, in the whole process, welding and complex distributed steel do not need, the construction is simple and rapid.

A mat is made of flexible, closed-cell polyvinyl-chloride foam. The mat overlies and protects an underlying car seat. The mat can include a back portion and a leg portion. The leg portion protects the leg rest of the seat. The back portion protects the backrest of the seat.

Method, Apparatus and non-transitory computer readable media that enhance patient-recruitment and participation in clinical trials preferably includes structure and/or steps whereby one or more APIs are used to interface at least one Cognitive Analytics Value Inference and Intelligence—Healthcare (CAVII-H) server with the patient(s), Pharma participant(s), Contract Research Organization(s), Trial Investigator(s), and Healthcare Providers (such as a physician). The at least one CAVII-H server preferably use at least one of stored trial data, user medical data, user behavioral date, user application collected data user registration data, healthcare professional data to guide patient participation. Preferably, information is obtained from the users through plural interactive algorithms designed to sharpen and perfect patient selection, preferably throughout the life of each trial. This creates a global clinical-trial patient engagement, recruitment and retention marketplace, which is open to patents and all trial stakeholders.

A friction sheet includes a fabric sheet with a friction surface formed on a surface of the fabric sheet and the friction sheet is attached to an outsole so as to provide the outsole better friction and grasp ability. The friction sheets are especially designed to be cooperated with thin outsoles.

The invention concerns a mounting arrangement for mounting an orthodontic bracket on a tooth. The mounting arrangement comprises an orthodontic bracket and a mounting aid, wherein the mounting aid can be detachably connected to the orthodontic bracket with positive engagement by pushing it onto the bracket in such a way that long sides of the side pieces of the mounting aid engage in guide grooves of the bracket.

A method and apparatus for manufacturing a continuous metal tube having a plurality of electrical conductors disposed therein, by using a spring member to depress the electrical conductors while a flat metal strip is formed into a tubular member and welded to enclose the electrical conductors. The spring member functions to protect the electrical conductors from heat damage. The welding occurs completely downstream of the spring member in order to avoid excessive heat buildup in the spring member.

A quick-release, fluid impervious elastic coupling with hook and loop strips conforms to the shape of conduit ends to join, seal and secure together conduits that can have different diameters. The elastic sheet can be a single or multiple layers and can be reinforced with strengthening ribs or cords and/or provided with gripping ridges to assist securing and sealing the conduits against leakage.

A mobile support cart has one or more extendable and foldable arms to position one or more monitors or devices mounted to the extendable arm. The arm is mounted to a vertical column that is supported by a linear rail system providing vertical guidance. An adjustable counterweight carriage rides on a second rail set and is connected to each column through a chain and pulley. Each chain and pulley is fully redundant with two chains attached to discrete mounting points on each counterweight carriage and to each column. The amount of counterweight applied can be adjusted within a given load range by adding additional plates/ballast to the counterweight carriage. When the load on the arm(s) are fully offset by ballast on the counter weight carriage the arms and payloads reach a “neutral buoyancy” condition. The system maintains the position once an operator has released them.

The tire-handling device (10) is a compact, lightweight tool for carriage within a motor vehicle trunk or storage compartment to facilitate handling of a tire (T) during a tire change or similar operation. The device includes a tire support cradle (30) supported by opposed vertically adjustable handles (32). The handles (32) and cradle (30) therebetween may be adjusted to position the cradle (30) beneath a tire (T) on a raised axle during a tire change, or for aligning a fresh tire with the wheel mounting studs of the wheel hub. Two mutually opposed tire support belt rollers are disposed within the cradle (30). A tire support belt extends between the rollers, allowing a tire (T) resting thereon to be rotated for alignment with the mounting studs of the vehicle wheel hub.

Magnetic joints for toy figurines are provided. In one embodiment, the joints include a pair of sockets with magnets formed therein and a ball positioned between the sockets, wherein the sockets are magnetically coupled to the ball and allow for rotation and angulation of coupled components. Friction inlays or O-rings could be provided between the ball and the sockets to retain the coupled components in one or more desired positions. In another embodiment, the joints include complementary, generally planar surfaces having magnets embedded therein for coupling the planar surfaces and allowing rotation and indexing of coupled parts. Conductive regions could be provided in the planar surfaces to allow power transmission through the joints. In another embodiment, the joints include a magnetically-coupled peg and socket for providing rotation and indexing of coupled parts.