125 results about "Rotational alignment" patented technology

A splined shaft head for engaging a splined hub includes first, second and third stages. The first stage has a conical taper on one side, and a cylindrical setback on the other side, which transitions through a tapered shoulder to the cylindrical body of the shaft head. The second stage includes lead spline teeth extending along the cylindrical body to the conical taper. The third stage includes torque-transmitting main spline teeth regularly arranged around the circumference. The shaft head is rotated while being inserted axially into the hub. The first stage allows radial free play and de-centering of the hub so the lead spline teeth find a proper rotational alignment with spline grooves of the hub. Then, the tapered shoulder at the end of the first stage positively centers the hub on the shaft axis, and finally the main spline teeth of the third stage provide full form-locking engagement.

An IV catheter introducer having an elastomeric grommet disposed between the housing and the IV catheter assembly that helps avoid unintentional separation of IV catheter assembly from the housing during shipping and handling prior to use, that acts as a needle guide, that helps align the housing and IV catheter assembly coaxially, that indicates that top side of the catheter introducer, that provides proper rotational alignment between the grommet and housing, that wipes blood off the needle during withdrawal of the needle from the catheter assembly and grommet, that impedes blood flow out of the catheter hub after needle withdrawal, and that assists the user in separating the housing from the IV catheter assembly following insertion of the catheter and withdrawal of the needle.

A modular long bone prosthesis is provided having a proximal component and a retroversion component. The proximal component is configured at a proximal end to receive a head forming a portion of a joint and is formed at a distal end to mate with additional prosthesis components. The proximal component is formed to simulate an angle inherent in the proximal end of the bone to be replaced and includes an indicator adjacent the distal end to facilitate rotational alignment of the proximal component and additional prosthesis components. The retroversion component includes a proximal end configured to mate with the distal end of the proximal component. The proximal end includes alignment indicia for positioning relative to the indicator on the proximal component. When the indicator is in a first position relative to the alignment indicia the proximal component and the retroversion component establish a first alignment orientation forming an angle simulating the angle inherent in the proximal end of the right long bone of the long bone to be replaced. When the indicator is in a second position relative to the alignment indicia the proximal component and the retroversion component establish a second alignment orientation forming an angle simulating the angle inherent in the proximal end of the left long bone of the long bone to be replaced.

A surgical guide assembly is provided for positioning a drill bit during a dental implant procedure. The guide assembly includes a mounting member configured to mount to one or more teeth adjacent to an edentulous area, a base connected to the mounting member and dimensioned to extend over the edentulous area, a translation member adjustable with respect to the base, and a rotation member adjustable with respect to the translation member. The rotation member includes an aperture configured to receive a radiographic marker or a drill. The translation and rotation members may be configured to adjust one of the mesio-distal (MD) rotational alignment and the buccal-lingual (BL) rotational alignment of the radiographic marker inserted in the aperture while holding the other of the MD and BL rotational alignment mechanically fixed. Also, the translation and rotation members may be configured to adjust the other of the MD and BL translational alignment of the radiographic marker while holding said one of the MD and BL translational alignment mechanically fixed. A method of using the dental implant positioning assembly is also disclosed.

This invention provides a method and apparatus for substantially eliminating deposition on the edge of a wafer supported on a pedestal in a processing chamber. Process gas flow onto the wafer surface is inhibited from reaching the wafer edge and backside, by means of a shadow ring placed over the wafer without touching it. Deposition on the edge and backside of the wafer are therefore substantially eliminated. The shadow ring defines a cavity which circumscribes the wafer edge, into which purge gas is flowed. This purge gas flows out from the cavity through the gap between the shadow ring and the upper surface of the wafer. Alignment pins are placed on the wafer supporting surface of the pedestal. These pins have sloping surfaces and are arranged to guide the wafer to a centered position on the pedestal when the wafer is placed on the pedestal. These pins also serve to align the shadow ring to the pedestal and thence to the wafer. The shadow ring has a plurality of keyed formations which mate to the pins, and as the shadow ring and pedestal are brought together, the pins serve to align the shadow ring. This precise rotational alignment and centering of the shadow ring results in substantial elimination of edge deposition. The keyed formations have elliptical cross-sections to provide for radial movement of the pins with respect to the keyed formations due to thermal expansion.

A catheter assembly is provided having an inner member and an outer member extending along a longitudinal axis, the inner member and the outer member having a coaxial configuration and dimensioned for relative axial movement. The outer member may include an anti rotation member adapted to engage with a longitudinal slot formed on the inner member so as to maintain rotational alignment between inner member and outer member. The inner member can be made with a proximal portion made from a tubing such as hypotubing or a coil tubing. The inner member also may be made with a proximal portion made with a support mandrel. A coil tubing can be utilized to form the guide wire receiving member which is attached to the inner member.

Low profile adaptor for use with a medical catheter, such as a gastrostomy feeding tube. In a preferred embodiment, the adaptor comprises a body having a lower portion and an upper portion. A first channel is provided in the lower portion, and a second channel is provided in the upper portion, the first and second channels being perpendicular to and in fluid communication with one another. A generally cylindrical stem is coaxially positioned within the second channel, the stem being rotatably mounted about its longitudinal axis. The stem is hollow and has an open front end, a closed rear end and a hole in its side wall, the hole being rotatably alignable with the first channel. To facilitate rotational alignment of the hole with the first channel, a stop is formed on the exterior of the stem, the stop being engageable with a surface positioned within the second channel. The front end of the stem is recessed relative to the front end of the second channel to prevent unwanted rotation of the stem. Rotation of the stem from a closed position to an open position is achieved by screwing a syringe onto the front end of the stem. The proximal end of the gastrostomy feeding tube is inserted over the lower portion of the body and is secured thereto with a nut.

A golf club is manufactured according to a method in which a radially compliant crush sleeve is interposed between the shaft tip and hosel of the club head. The crush sleeve is fabricated from a strip of metal formed into a substantially cylindrical metallic band with a plurality of radially-extending dimples or corrugations that grip the shaft. The crush sleeve is retained either in an undercut region in the hosel bore, on a mandrel extending from the hosel, or on a pilot shaft at the tip of the golf club shaft. After the interface between the shaft and hosel is coated with an adhesive, the shaft is assembled to the hosel with the crush sleeve squeezed in between. The crush sleeve secures the shaft to the club head with sufficient rigidity to allow the adhesive to set while maintaining the appropriate axial and rotational alignment.

Mount for a shock absorber includes a cap in working torque-transmitting connection with the entire mount. The twisting surface, which is in working connection with an opposing surface on the vehicle at least during the installation of the shock absorber in a mounting hole in the vehicle. The twisting surface and the opposing surface ensure the rotational alignment of the connecting means on the mount side with the connecting means on the vehicle side.