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

Apparatus (2) for wrapping a load (18) placed on a turntable (4) having a mast assembly (8), a carriage assembly (12) adapted for vertical slideable movement along said mast assembly (8) and dispensing means (13) for dispensing tape material (80). The tape material (80) is transferred from the dispensing means (13) in response to rotation of the turntable (4) such that the tape material (80) wraps around the load (18) in a predefined pattern. The carriage assembly (12) and turntable (4) are configured for automated movement in response to a computer program stored in memory means (306) to enable wrapping of the load (18) with the tape material (80) in the predefined pattern. The carriage assembly (12) is positioned along the mast assembly (8) under control of the computer program in accordance with a rotational position of the load (18) to locate the tape material (80) at locations on the load (18). A pretensioning apparatus is also disclosed for pretensioning the tape material (80). Also disclosed is apparatus including adjusting the rate at which tape material (80) is payed out depending on a portion of the load (18) to be wrapped by the tape material (80). Also disclosed is tension adjustment apparatus (100) for varying the tension applied to the tape material (80).

An automatic pullback catheter system (2) includes a disposable catheter assembly (6) mountable to a drive assembly (4). The drive assembly includes a body (8) to which a drive. chassis (14) is mounted for movement along a longitudinal path (16) by a motor (20) which rotates a longitudinal drive screw (22) selectively coupled to the drive chassis by a threaded clamp (24). A rotary drive motor (30), mounted to the drive chassis, rotates a first combined connector (34). The catheter assembly includes a hollow sheath (38) housing a rotatable and axially movable cable assembly (44). The sheath includes a proximal hub (42) mountable to the body. The cable assembly includes an elongate imaging cable (46) with a second combined connector (36) at its proximal end. The first and second combined connectors are blind matable connectors and provide for the longitudinal movement coupling, the rotary movement coupling and the data / information connection of the two connectors.

A pivotally mounted arrow rest that has a support element moveable between a loaded position and an unloaded position. A bias element urges the support element toward the unloaded position. A flexible inelastic member has a first end portion fixed with respect to a bow cable and a second end portion operatively connected to support element. When the support element is in the loaded position, the flexible inelastic member is in a tension condition.

A packaging unit is provided, especially for a wiper blade. The packaging unit has a container for receiving at least one object and a casing that is able to be slid over the container, the casing covering the container at least partially. The casing has a section having a narrowed cross section, so that, in the area of the section, the casing exerts a clamping force on the container.

An apparatus for holding an arrow with respect to an archery bow, particularly when the archery bow is carried and moved into different positions. The holding apparatus has a base portion preferably but not necessarily integrated with an upper portion. The upper portion has two opposing walls spaced apart from each other and extending outward from a top surface of the base portion. The opposing walls form a void within which a shaft of an arrow fits.

A screw and rod fixation assembly includes a body member including a screw seat for seating a screw head therein and a rod seat for seating a rod therein. An adjustable locking ring applies a locking force against the screw head seated in the screw seat and a locking cap adjustably applies a locking force against a rod seated in the rod seat. The adjustable screw locking ring and locking cap function independent of each other.A method of fixing the rod to the screw includes the steps of inserting a screw head into a screw seat in one end of a body member and inserting a rod into a rod seat in a second end of a body member and selectively and independently adjusting a locking force on both the screw head and the rod within the screw seat and rod seat, respectively.

A composite rim includes a tire-receiving ring made of metal and a spoke-connecting ring made of plastic. The tire-receiving ring includes at least one dovetail formed on the bottom thereof and two sidewalls formed thereon. The spoke-connecting ring includes two brake-contacting members located tightly outside the sidewalls of the tire-receiving ring, a cross member formed between the brake-contacting members and at least one dovetail groove defined in the cross member for receiving the dovetail.

A conveyor 12 includes an infeed / scanning section (18) and a cutting / outfeed section (22). Both sections have an endless belt (70) and (180) each driven by a friction drive roller (100) and (200). Adequate frictional load is applied between the endless belts and corresponding drive rollers by tension assemblies, each having a tensioning roller (86), (188) rotatably mounted on a pivot frame structure (112), (220) allowing the weight of the tensioning roller to be applied to the return run of the endless belts. Dampeners (130) (270) are integrated with the tensioning rollers (86) (188) to dampen vibrations in the endless belts (70) (180).

The invention discloses a device for installing externally-clamping probes of a portable ultrasonic flow meter. The device comprises a pair of externally-clamping probes which are arranged on a pair of probe fixtures, wherein each probe fixture is arranged on the outer wall of a pipeline to be detected through a fixture fixing device; the middle shaft surface of each probe fixture and the axis ofthe pipeline to be detected are adjusted to be on the same plane by an adjusting device; each probe fixture comprises a support frame, a probe guide frame and a probe pressing device; the support frame and the middle shaft surface in the probe guide frame are overlapped and fastened together; an inner side gap between two sides of the probe guide frame is the same as the width of the probe, so that the middle shaft surface of the probe is automatically overlapped with the middle shaft surface of the probe guide frame, namely is overlapped with the middle shaft surface of the probe fixture, after the probe is guided into the probe guide frame; and the probe pressing device presses the probe to make the probe tightly attached to the outer wall of the pipeline to be detected. By the installation device, the probes can be accurately and conveniently positioned; and the device is easy and convenient to carry and install.

A reference beam generator has first, second, and third projection turrets for projecting first, second, and third fan beams of laser light, respectively. The first, second, and third fan beams of laser light are oriented normal to each other. The turrets may be rotated such that each of said fan beams can each be rotated about an axis that is normal to the plane in which the fan beam is projected. The generator may be used to project a number of reference points and lines on multiple surfaces.

The present invention relates to friction material for automobile brake disc, and is especially one kind of friction material reinforced with the mixture of aramid fiber and inorganic mineral fiber and its preparation process. The new non-metal friction material without asbestos consists of aramid fiber, LAPINUS inorganic mineral fiber, phenolic resin, butadiene-acrylonitrile rubber powder, inorganic stuffing and friction regulator. The organic-inorganic composite material reinforced friction material has raised comprehensive performance, stable friction performance and friction coefficient variation with temperature within 10 %. In addition, the present invention also provides high temperature fast curing process to ensure the heat resisting performance of the product and lowered power consumption.

An audio lanyard audio device provides a number of advantages not seen with earlier devices, including, (1) a pair of soft openings to accept the ear pieces of conventional eyewear in a manner that supports and engages several inches of the ear pieces of conventional eyewear with sufficient surface area and friction to hold the conventional eyewear securely, (2) provision of a length of softer foam material for fitting both the lanyard and convention eyewear ear pieces between the ear and head, (3) formation of a balanced combination when worn with conventional eyewear, and (4) the location of the controls and main electronics and battery at the rear for balance and easy reach by a user.

The invention discloses a novel pipeline robot. The robot is composed of two robot bodies which are the same in structure and are in mirror symmetry connection through a universal rotating module connector. Each robot body comprises a robot main body of a prismoid, three crawler-type walking mechanisms evenly arranged in the circumferential direction of the robot main body, and a connecting mechanism connected with the robot main body and the walking mechanisms. Each connecting mechanism is further connected with a stepping motor through a lead screw nut and a lead screw, and the stepping motors rotate to control the expanding degree of crawler belt feet. The novel pipeline robot has the beneficial effects that the pipeline robot can go straight and turn in a pipeline and can also move ina horizontal-to-vertical pipeline. The expanding angles of the crawler belt feet can be adjusted at any time by adjusting the connecting mechanisms to meet the walking needs of different pipe diameters. The crawler-type walking mechanisms are high in road holding force, the multiple motors carry out independent driving, the robot can adapt to various pipeline environments, and the whole equipmenthas the function of preventing water and corrosion.

A variety of training boards and panel assemblies are supported by an indoor floor base to provide targets with rebound capability for developing and improving ball handling skills. Panel supporting uprights extend upwardly from a base housing to provide backing and necessary stability for a rebound panel. The supporting uprights are configured to provide supporting surfaces to which the rebound panels are attached, with the supporting surfaces aligned to position the rebound panels in a desired orientation. To provide stability, the base housing includes frictional elements to help hold in place for while in a gym floor. Also, the base housing is configured to hold weights of a desired configuration, thus cooperating with the frictional elements to hold the training board in place while being subjected to forces from balls. In addition, the supporting uprights have multiple support surfaces capable of aligning the panels in a desired orientation, thus providing multiple rebound characteristics to the user.

A polyaxial bone screw for attaching a rod to a vertebra comprises a fastener having a threaded shank and a head. A yoke has a rod receiving channel for receiving the rod. A screw support rotatably attached to the yoke has a cavity articulatingly and rotatably supporting the fastener head, a hole receiving the threaded fastener shank therethrough, and a plurality of slots for maximum screw angulation. A crown has an upper rod receiving surface, a lower surface in contact with the fastener head and a projecting surface in contact with the yoke. A biasing element between the screw support and the yoke applies biasing forces among the fastener, the crown, and the yoke to provide sufficient friction to retain the yoke in a manipulable position relative to the fastener. A set screw is supported by the yoke overcome the bias and to rigidly secure the components.