183results about How to "Avoid rotational movement" patented technology

The present invention relates to an expandable prosthetic implant device for engagement between vertebrae generally comprising an inner member, outer member, gear member and a locking assembly positioned coaxial with respect to each other such that the inner and outer members are moveable relative to each other along an axis. The gear member is axially fixed to the outer member and freely rotatable with respect to the outer member and the gear member threadedly engages a threaded portion of the inner member to translate inner member along the axis. The implant is configured to engage the vertebrae in a predetermined alignment and the gear member includes gear teeth exposed to the exterior and configured to be accessible by a tool member at a plurality of angular positions around the perimeter of the implant device.

An angular position sensor (100) for determining angular position includes a shaft (105) having a threaded portion (108), and a structure for engaging an external application (119). The shaft (105) includes a first permanent magnet (114). A nut (116) is threaded on the threaded portion (108). The nut (116) is formed from a first magnetic permeable material or includes a second permanent magnet (118). At least one constraint (122) is coupled to the nut (116) for preventing rotational movement of the nut (116) while allowing linear motion of the nut (116). A first magnetic sensor (120) is positioned along a length of the threaded portion (108) of the nut (116) for measuring a linear position of the nut (116). A second magnetic sensor (124) is provided for measuring an angular position of the shaft (105). Signal processing circuitry (130) is coupled to receive outputs from both the first magnetic sensor (120) and second magnetic sensor (124) for calculating a parameter relating to an angular position of the rotatable member.

A syringe assembly including: (1) a syringe barrel defining a chamber; (2) a plunger mounted in the chamber and moveable with respect to the barrel; and (3) a cap holder assembly containing a cap and an absorbent material removably attached to the syringe.

A syringe assembly including: (1) a syringe barrel defining a chamber; (2) a plunger mounted in the chamber and moveable with respect to the barrel; and (3) a cap assembly containing a cap and an absorbent material is removably attached to the plunger. An antiseptic cap and syringe combination includes a syringe barrel having an access point connection, and a tip cap having a proximate chamber and a distal chamber. The proximate chamber releasably receives and engages the access point connection of the syringe, and the distal chamber removably receives and engages an antiseptic cap.

A locking arrangement for locking a hub (1) of a wind turbine against rotational movement is disclosed. The locking arrangement comprises at least one first locking part (6) and at least one second locking part (8). The first locking part(s) (6) is / are movable along a substantially radial direction relative to the rotational axis of the hub (1), between a locking position and a release position. Each second locking part (8) is adapted to retain a first locking part (6) when the first locking part (6) is in the locking position. The first locking part(s) (6) and the second locking part(s) (8) are arranged with one of them on the hub (1) and the other one on the base frame (5). Thereby, a first locking part (6) and a second locking part (8) prevent rotational movement of the hub (1) relative to the base frame (5) when the first locking part (6) is in the locking position, and allow such movement when the first locking part (6) is in the release position.

A fire door control system permits user input during regular use and during alarm conditions. The system utilizes primary and secondary power sources and incorporates a variety of preventive safeguards assuring that functionality of the fire door control system will not be lost. The system utilizes primary power when possible in all alarm conditions. However, during alarm conditions when primary power is lost or when a hand crank hoist remains dangerously engaged, the system is bumplessly connected to a secondary power source and a fire door of the system is closed with the aid of a clutch that directly connects the drive input with an axle that supports the fire door. The clutch pulses on and off to control the descent of the door. The system includes an electronic controller for coordinating the operation of elements of the system and for implementing a method of controlling a fire door system.

The invention provides an on-line detection system and an on-line detection method for pipes or bars ultrasonic phased array. The method comprises the following steps of: arranging a plurality of concave surface phased array energy converter probes on planes which are perpendicular to the center lines of the pipes or bars and at the position which forms a certain included angle with the center lines of the pipes or bars at the peripheries of the pipes or the bars; generating an electronic control sound field focused by the phased arrays by utilizing the concave surface phased array energy converter probes; and switching continuously and quickly by utilizing a high-voltage switch array, a multi-channel phased array transmit-receive system and a control system through a high-voltage switch array circuit, and controlling different array elements of the concave surface phased array energy converter to transmit and receive at different moments, so that phased array focusing acoustic beams rotate in the pipes or bars at high speed to realize dynamic focusing and scanning. By the system and the method, the 360-degree full-coverage scanning of the pipes or bars can be realized under the condition that the concave surface phased array energy converter probes are not moved, longitudinal and traverse defects can be scanned and detected, and the detection speed is improved greatly while the detection accuracy is improved.

Anti-rotation device for a pipe and a connector has a pipe connecting portion and a connector connecting portion constructed integrally on the pipe connecting portion. The anti-rotation device is mounted on the pipe and the connector while the pipe connecting portion clips a straight tubular inserting side portion of the pipe in anti-rotating relation and the connector connecting portion is connected to the connector in anti-rotating relation. Thereby the pipe is connected to the connector in anti-rotating relation.

A syringe assembly including: (1) a syringe barrel defining a chamber; (2) a plunger mounted in the chamber and moveable with respect to the barrel; and (3) a cap assembly containing a cap and an absorbent material is removably attached to the plunger. An antiseptic cap and syringe combination includes a syringe barrel having an access point connection, and a tip cap having a proximate chamber and a distal chamber. The proximate chamber releasably receives and engages the access point connection of the syringe, and the distal chamber removably receives and engages an antiseptic cap.

A key fob assembly for a vehicle that includes a housing is provided. A mechanical key includes a key holder for rotation to and from the housing. The key holder includes first and second ends positioned opposite to each other. The key holder defines an opening extending between the ends for defining a pivot axis to facilitate the rotational movement of the mechanical key. The spring cover is coupled to the key holder and positioned about the second end of the opening. The spring is positioned within the opening and is coupled to the spring cover. The button is coupled to the spring and is releasably coupled to the first end for preventing rotational movement of the key holder when the button is coupled to the first end and for facilitating rotational movement of the key holder about the pivot axis when the button is released from the key holder.

Certain embodiments of the present disclosure provide a prosthetic valve (e.g., prosthetic heart valve) and a valve delivery apparatus for delivery of the prosthetic valve to a native valve site via the human vasculature. The delivery apparatus is particularly suited for advancing a prosthetic heart valve through the aorta (i.e., in a retrograde approach) for replacing a diseased native aortic valve. The delivery apparatus in particular embodiments is configured to deploy a prosthetic valve from a delivery sheath in a precise and controlled manner at the target location within the body.

A sewing machine type stepping foot trainer includes a base frame, a pivot frame pivotally mounted on the base frame, two spaced pedals mounted on the pivot frame to pivot with the pivot frame simultaneously, and a damping mechanism mounted between the base frame and the pivot frame to provide a damping effect to the pivot frame. Thus, the user's two feet step on the pedals to move the pedals simultaneously and to exert a force to overcome the damping force of the damping mechanism so as to exercise the muscle of the user's two feet and legs, thereby achieving the exercising effect.

Herein described is a post anchor apparatus and methods of use in erecting and anchoring posts in natural terrain. The apparatus of the present invention provides a convenient means of erecting a post in natural terrain while also providing improved strength, stability, and durability to the post. The apparatus comprises at least a hosing for receiving the base of a post, a rod, stabilizer element for stabilizing the apparatus within the natural terrain, and an auger blade for driving the rod into the natural terrain.

An improved seating apparatus is provided, including a seat supported by a fixed seat post, the seat post mating with a support mount fixed to the bottom of the seat. The aligned surfaces of the seat post and support mount are of a non-circular cylindrical shape to prevent rotation of the support mount with respect to the seat post.

A locking arrangement for locking a hub (1) of a wind turbine against rotational movement is disclosed. The locking arrangement comprises at least one first locking part (6) and at least one second locking part (8). The first locking part(s) (6) is / are movable along a substantially radial direction relative to the rotational axis of the hub (1), between a locking position and a release position. Each second locking part (8) is adapted to retain a first locking part (6) when the first locking part (6) is in the locking position. The first locking part(s) (6) and the second locking part(s) (8) are arranged with one of them on the hub (1) and the other one on the base frame (5). Thereby, a first locking part (6) and a second locking part (8) prevent rotational movement of the hub (1) relative to the base frame (5) when the first locking part (6) is in the locking position, and allow such movement when the first locking part (6) is in the release position.

An impression cap or other dental coping is designed to removably engage a dental component such as an abutment, implant and / or and analog in an aligned orientation. The coping includes at least one substantially rigid aligning rib that extends from the inner coronal and side surfaces of the coping and removably engages a groove formed in the corresponding surface of the dental component. The coping may also include a substantially flat aligning surface positioned opposite to the aligning rib in the interior of the coping that contacts a corresponding flat surface on the dental component. The aligning rib and optional flat aligning surface facilitate consistent and precise orientation and positioning of the impression cap or other coping on the dental component, prevent rotation between the coping and component, and also provide a tactile and / or visual indication to the user when the coping and component are not properly aligned.

A powered jamb saw is provided which is ideally suited for making corner cuts. A cylindrical housing for the shaft of the circular saw blade is mounted in a split bushing tensioned by a threaded bolt secured to and for rotation by a handle positioned so as to permit the workman to use both hands to position the jamb saw during its use in making cuts.

A door lock includes a casing mounted in a bare of a door. The casing includes inner and outer coupling seats to which inner and outer mounting plates are mounted respectively. The outer coupling plate includes two diametrically opposed slots located outside the bore of the door. The inner mounting plate includes a plurality of pairs of diametrically opposed holes. The inner mounting plate is rotatable relative to the inner coupling seat to a position in which one of the plurality of pairs of holes is aligned with the slots. Two mounting posts are extended through the slots and through two through-holes in the door. Each mounting post is slideably received in one of the slots, allowing the mounting posts to move toward or away from each other until a spacing between the mounting posts is equal to that between the two through-holes of the door.

A collapsible reel that can be broken down into smaller components for ease of shipping or to change out the drum is provided. The reel comprises a drum assembly, a pair of flanges and a pair of coupling assemblies for removably affixing each flange to the drum assembly.

An improved seating apparatus is provided, including a seat supported by a fixed seat post, the seat post mating with a support mount fixed to the bottom of the seat. The aligned surfaces of the seat post and support mount are of a non-circular cylindrical shape to prevent rotation of the support mount with respect to the seat post.

A flashlight has a casing having a front end, a light source axially secured in the housing inward of the front end, and a two-part connecting sleeve forward of the light source and having a rear part secured in the housing and a front part. Interengaging formations couple the parts together for only limited axial movement relative to each other, but lock them rotationally and prevent axial separation beyond a predetermined limit. A lens is mounted in the front part. A head sleeve secured to the front part extends axially rearward over the front end of the casing so that relative axial movement of the front and rear parts axially shifts the lens relative to the source.

An improved flanged tube assembly with insert-reinforced tube flanges to prevent tube flange deformation and leakage when subjected to high compressive forces as well as sustained high-temperature procedures. The flange inserts are configured to form the flange portion of a flanged tube, or configured to provide structural support to the portions of the flange integral to the associated tube. The inserts may be metallic or polymer based and formed with various structural features to create a mechanical lock between the insert and the material used to make the tube / flange assembly. The inserts can be incorporated into the tube flanges so as to provide the desired support without being exposed to any fluids and / or gases that may flow through the reinforced tube / flange assemblies.