A crimper includes a first arm that includes a first crimper die that defines a first tapered channel. The crimper also includes a second arm coupled to the first arm at a pivot connection. The second arm includes a second crimper die that defines a second tapered channel. The pivot connection enables the first arm and the second arm to rotate about the pivot connection from an open state to a closed state. The first arm and second arm rotate at an angle relative to one another to allow loading of the expandable medical device into the first tapered channel or the second tapered channel and to allow positioning of the expandable medical device relative to a delivery device. When transitioning, the first tapered channel and the second tapered channel form a chamber that is configured to crimp the expandable medical device from the uncompressed state to the compressed state.

Systems and methods are disclosed herein for dressing centering a bearing compartment in a gas turbine engine. A nut may be inserted through an outer case of a gas turbine engine. The nut may be coupled to a strut which centers a bearing compartment. The nut may be rotated to achieve a desired tension on the strut to center the bearing compartment. A retaining plate comprising a collar may be positioned over the nut. A swaging tool comprising a swaging ramp may be positioned over the nut. The swaging tool may be forced against the retaining plate using a draw-in bolt. The swaging ramp may contact the collar and form indentations in the collar to lock the nut in place.

A tool for compressing a stented prosthesis. The tool includes first and second sets of rollers. The first set includes a plurality of rollers arranged to define a first working region having a first working diameter. The second set includes a plurality of rollers arranged to define a second working region having a second working diameter. The sets of rollers are arranged such that the working regions are axially aligned. The first working diameter is greater than the second working diameter. A stented prosthesis traversing the first working region and then the second working region is forced to a compressed state. In some embodiments, the tool includes one or more intermediate sets of rollers between the first and second sets of rollers, with each of the intermediate sets of rollers defining a working region having a working diameter. The respective working diameters progressively decrease in a downstream direction.

The invention provides a composite metal sheet produced by joining two metal sheets together, comprising: a projection formed by cutting the two metal sheets along a cutting line and pressing an area surrounded by the cutting line and a reference line in the two metal sheets, with the two metal sheets overlapping each other, with the reference line remaining uncut, with the cutting line extending from and communicating with both terminals of the reference line while forming a predetermined shape together with the reference line, and with the projection formed at one portion of the area in response to pressure applied to the area; hole generated by forming the projection in the two metal sheets; and a joint disposed between an outer peripheral cutting face of the projection and an inner peripheral cutting face of the hole.

Helmets and methods for manufacturing a helmet are described. An example helmet includes a shell and a shock absorbing liner attached to the shell. The shock absorbing liner includes a cavity. The helmet a shock absorbing insert formed of a material different than the material of the shock absorbing liner. The cavity is configured to retain the shock absorbing insert.

A crimping tool is provided. The crimping tool includes a stationary jaw and a movable jaw. The movable jaw is arranged adjacent the stationary jaw, the movable jaw being movable from an open position to a closed position. A linkage is operably coupled to the movable jaw on one end, the linkage rotatable about an axle. A first input member is operably coupled to the linkage to rotate the linkage about the axle, the first input member rotating about a first axis. A second input member is operably coupled to the linkage to rotate the linkage about the axle, the second input member rotating about a second axis, the second axis being substantially perpendicular to the first axis.

Techniques for implementing and/or operating a system that includes a swage machine and a pipe fitting to be secured to a pipe segment. The pipe fitting includes a fitting jacket to be conformally deformed around tubing of the pipe segment. The swage machine includes a grab plate that interlocks with the pipe fitting; a die seat implemented in a die plate of the swage machine; a die set loaded in the die seat, in which the die set is to be passed over the fitting jacket of the pipe fitting to facilitate conformally deforming the fitting jacket; another die seat implemented farther from the grab plate than the die seat; and another die set loaded in the other die seat, in which the other die set is to be passed over the fitting jacket of the pipe fitting to facilitate conformally deforming the fitting jacket.

A crimper includes a first arm that includes a first crimper die that defines a first tapered channel. The crimper also includes a second arm coupled to the first arm at a pivot connection. The second arm includes a second crimper die that defines a second tapered channel. The pivot connection enables the first arm and the second arm to rotate about the pivot connection from an open state to a closed state. The first arm and second arm rotate at an angle relative to one another to allow loading of the expandable medical device into the first tapered channel or the second tapered channel and to allow positioning of the expandable medical device relative to a delivery device. When transitioning, the first tapered channel and the second tapered channel form a chamber that is configured to crimp the expandable medical device from the uncompressed state to the compressed state.

Helmets and methods for manufacturing a helmet are described. An example helmet includes a shell and a shock absorbing liner attached to the shell. The shock absorbing liner includes a cavity. The helmet a shock absorbing insert formed of a material different than the material of the shock absorbing liner. The cavity is configured to retain the shock absorbing insert.

Disclosed are methods, apparatus, devices, and other implementations, including a method for the production of a pocketed spring unit that includes compressing a plurality of springs, moving the springs to positions between upper and lower layers of fabric or other material, step-wise advancing the material and the springs in a spring unit output direction, and welding together the lengths of fabric or other material at each step-wise advancement to produce a pattern of welds in which are formed a plurality of discrete pockets, each containing a spring.