Provided are self-retractable centering assemblies and methods of using these assemblies for alignment of parts having determinant assembly alignment holes. An assembly includes a center pin having a threaded portion threadably engaging a drive component. The assembly also includes a puller bushing rotatably coupled to the drive component. The center pin protrudes through the puller bushing and can slide with respect to the puller bushing when the drive component is rotated relative to the center pin. The sliding distance is controlled by a limiter disposed within the cavity of the puller bushing. During operation, a portion of the center pin extends from the puller bushing and is inserted into alignment holes of parts being aligned. The drive component is rotated relative to the center pin resulting in the center pin being pulled out of the alignment holes while the puller bushing is being pressed against the parts.

An alignment apparatus suited for aligning structural members, such as, but not limited to pipes, structural beams, lumber, or any other suitable member. The alignment apparatus comprises a mounting base, an alignment receiver, and a fastening element. The mounting base comprises a first mounting body, a mounting cavity, and a second mounting body. The alignment receiver comprises a first receiver panel, an alignment cavity, a fastening aperture, and a second receiver panel. The mounting base is perpendicularly connected adjacent to the alignment receiver. The first receiver panel and the second receiver panel are vertically connected adjacent to the mounting base. The alignment cavity is positioned between the first receiver panel and the second receiver panel. The fastening aperture traverses through the first receiver panel. The fastening element is selectively connected along the fastening aperture.

An alignment apparatus suited for aligning structural members, such as, but not limited to pipes, structural beams, lumber, or any other suitable member. The alignment apparatus comprises a mounting base, an alignment receiver, and a fastening element. The mounting base comprises a first mounting body, a mounting cavity, and a second mounting body. The alignment receiver comprises a first receiver panel, an alignment cavity, a fastening aperture, and a second receiver panel. The mounting base is perpendicularly connected adjacent to the alignment receiver. The first receiver panel and the second receiver panel are vertically connected adjacent to the mounting base. The alignment cavity is positioned between the first receiver panel and the second receiver panel. The fastening aperture traverses through the first receiver panel. The fastening element is selectively connected along the fastening aperture.

Apparatus for measuring alignment of two shafts. Two magnetic bases each have two linear contact edges designed to engage with a circumferential surface of the two shafts and to ensure alignment between the base and an axis of rotation of the shaft to within a tolerance compatible with alignment tolerances of the shaft. Brackets attached to the bases are designed to attach laser photoelectric devices, the photoelectric devices designed to measure shaft misalignment.

Apparatus for measuring alignment of two shafts. Two magnetic bases each have two linear contact edges designed to engage with a circumferential surface of the two shafts and to ensure alignment between the base and an axis of rotation of the shaft to within a tolerance compatible with alignment tolerances of the shaft. Brackets attached to the bases are designed to attach laser photoelectric devices, the photoelectric devices designed to measure shaft misalignment.

An alignment apparatus for accurately aligning a replacement spindle with a pre-existing axle shaft to facilitate repairing a damaged axle assembly. The alignment apparatus may comprise an axle clamp assembly and a spindle clamp assembly. The axle clamp assembly may be mountable to an axle shaft. The axle clamp assembly may be self-centering and self-aligning. Similarly, the spindle clamp assembly may be mountable to a spindle. The spindle clamp assembly may be self-centering and self-aligning. The axle clamp assembly may be fixable to the spindle clamp assembly. By fixing the axle clamp assembly to the spindle clamp assembly, a desired alignment between the axle shaft and the spindle may be achieved.

An alignment apparatus for accurately aligning a replacement spindle with a pre-existing axle shaft to facilitate repairing a damaged axle assembly. The alignment apparatus may comprise an axle clamp assembly and a spindle clamp assembly. The axle clamp assembly may be mountable to an axle shaft. The axle clamp assembly may be self-centering and self-aligning. Similarly, the spindle clamp assembly may be mountable to a spindle. The spindle clamp assembly may be self-centering and self-aligning. The axle clamp assembly may be fixable to the spindle clamp assembly. By fixing the axle clamp assembly to the spindle clamp assembly, a desired alignment between the axle shaft and the spindle may be achieved.

A pipe guide for laying radiant heat tubing includes a member with cutouts spaced along a flat surface of the member, the cutouts being spaced apart and configured to efficiently space pipes apart from each other by a predetermined distance.

The invention relates to a portable device for measuring lateral rail measurements under service to record and report excessive rail movement and angle differential to prevent a train from derailing. The device may be spring-loaded and light-weight. The device may include a microprocessor, sensors, and a display. The device may be installed on the rail. The device may sense an approaching train, automatically turn on the device, detect the train speed, and measure the angle differential, the real-time displacement, and the maximum/minimum displacement between the two rails while the train is operating over the rail at all speeds. The device measures and records the separation and angle differential of the rail to ensure the rail does not exceed separation that could derail the train.

A method for mounting and aligning a guide rail in an elevator shaft of an elevator system, which elevator shaft primarily extends in a main extension direction, includes at least the following steps: securing a rail bracket base to a shaft wall of the elevator shaft; applying a mark to the rail bracket base; aligning the guide rail in relation to the mark; and securing the guide rail to the shaft wall using the rail bracket base. The alignment of the guide rail is carried out by an alignment device that includes an abutment part and a location device.