A pipe support system includes a pipe base, a threaded stud having a head, a saddle supported above the pipe base, and a shoe removably nested along a concave upper surface of the saddle. Methods for installing the pipe support system include determining a height of a joint of pipe above a ground surface; selecting a length of pipe for the pipe base in accordance with the height of the joint of pipe above the ground surface, thereby making a macro-adjustment; and rotating a threaded stud relative to a stud housing in order to make a micro-adjustment to the height of t\he joint of pipe; and placing the joint of pipe onto the shoe, thereby supporting the pipe above the ground surface. A method for replacing the shoe when it becomes worn is also provided by reversing said installation.

A system with a vertically adjustable telescoping pole assembly and cramp brake mechanism includes a telescoping pole assembly with at least an outer pole and an inner pole. The pole assembly is movable bi-directionally between a closed position and an extended position. The cramp brake mechanism has a body that is secured to the outer pole of the pole assembly, and also includes a brake that releases while the pole assembly is moved to the extended position and engages when the assembly is not being moved.

A quick-change surface panel for a carwash, and a system for using a quick-change surface panel for a carwash are disclosed. The surface panel is an annular piece of flexible hygroscopic material. The surface panel is partitioned from its outer diameter inward towards the inner diameter, creating a plurality of radially-arranged wash elements. The radially-arranged wash elements terminate at a common center. A two-piece collar attaches each quick-change surface panel to a rotational hub. A spacer is positioned between each quick-change surface panel.

A plug-in connection arrangement for a component includes a first portion having a first groove contour in a first annular groove arranged in the first portion, and a second portion having a second groove contour in a second annular groove arranged in the second portion. Via a resilient connection arrangement element arranged between the first portion and the second portion in the second annular groove, the first portion and the second portion can have a retention position relative to each other in a first position and which can be moved in an axial direction into a second position which is provided for operation. The second position is a sealing engagement position.

A plug-in connection arrangement for a component includes a first portion having a first groove contour in a first annular groove arranged in the first portion, and a second portion having a second groove contour in a second annular groove arranged in the second portion. Via a resilient connection arrangement element arranged between the first portion and the second portion in the second annular groove, the first portion and the second portion can have a retention position relative to each other in a first position and which can be moved in an axial direction into a second position which is provided for operation. The second position is a sealing engagement position.

A quick-release wing structure includes a lock cylinder assembly and a lock head. The lock cylinder assembly is installed in the fuselage. The lock cylinder assembly includes a shell and a lock plate. An installation slot is opened inside the shell. The side wall of the installation slot is provided with a clamping hole connected with the installation slot. The lock plate is sliding and arranged in the installation slot. The lock head is installed in the wing. A locking slot is set on the periphery of the lock head. The lock head can pass through the clamping hole and drive the lock plate to move. When the locking slot is facing the lock plate, the lock head is clamped onto the locking slot and fixed. The UAV includes the quick-release wing structure described above.

In an embodiment, a self-locking pin includes a cylindrical shaft having a slot at a front end, an enlarged head at the rear end of the shaft, first and second toggles mounted within the slot, a compressible biasing member mounted between the toggles, and a mounting pin extending through the shaft and the toggles. The mounting pin is fixed in position on the shaft and the toggles are movable relative to the mounting pin. Each toggle is movable from a first position in which the respective toggle extending outwardly from an open end of the slot to a second position in which each toggle is pushed inwardly into the slot. The biasing member is compressed when the toggles are in the second positions. A single toggle can also be provided.

A retaining system includes a lock including a drive portion that defines an axis of rotation, a radial direction, and a circumferential direction, and further includes a locking portion including an outer peripheral surface. A wing extends radially outwardly from the outer peripheral surface, while the locking portion is connected to the drive portion by a wall. A rib extends axially from the wall toward the drive portion forming an annular cavity, defining at least one detent receiving aperture that is disposed in the annular cavity.

A drive train connector assembly includes a first connecting structure and a second connecting structure. The first connecting structure has an attachment protrusion with first and second edges. The first edge extends in a first direction. The second edge extends in a second direction. Both directions are perpendicular to the rotational axis. The first and second directions define a first acute angle therebetween. The second connecting structure defines recessed area. The attachment protrusion fits into the recessed area. The recessed area defines third and fourth edges. The third edge extends in a third direction and the fourth edge extends in a fourth direction. The third direction and the fourth direction define a second acute angle. With the attachment protrusion installed within the recessed area the first and third edges are parallel to one another and the second and fourth edges are parallel to one another.

An apparatus can include a coupler for coupling a robotic arm to a surgical table having a table top on which a patient can be disposed. The coupler can include a first portion configured to couple to a surgical table and a second portion configured to couple to a robotic arm. The second portion may include a post that may translate into the first portion. The first portion may comprise a locking mechanism having one or more stages to constrain movement of the second portion relative to the first portion in six degrees of freedom. The coupler can thus provide secure coupling of the robotic arm to the surgical table.