Abstract: A fog producing firefighting tool has a nozzle which includes a plurality of apertures oriented so that when pressurized fluid flows through each aperture, the liquid impacts at an angle of 90 degrees with another stream of liquid to atomize the liquid and create a fog. The firefighting tool is of modular construction which includes a first member, one or more intermediate members, and an end member wherein the members are connected to each other by means of quick coupler devices which can be readily locked into coupled relationship and will not interfere with the usage of the tool when it is forced into or removed from a hole in a structure.

Abstract: There is disclosed a sidecar having a self-adjusting castering wheel located forwardly of the rear wheel of the associated motorcycle and which, together with the sidecar, is connected by a parallelogram linkage to the frame of the motorcycle so as to lean in substantial union with the motorcycle and the sidecar body.

Abstract: Vibration of a rotating disc is dampened by means of a pair of weights which respectively lie in inclined tracks and are held against the opposite faces of the disc by the force of gravity.

Abstract: A planetary friction drive includes a plurality of balls which are driven about a frusto-conical outer race by an inner driving surface made up of a pair of jaws which are spring biased toward one another into frictional engagement with the balls, and the drive ratio is adjusted by axially moving the inner driving surface relative to the outer race.

Abstract: A single hand tool for removing and applying the springs on automotive brake shoe assemblies includes at one end a member for removing and attaching retainer discs on the hold-down springs and also for removing the shoe-to-anchor springs, and at the other end a spring operated mechanism for attaching the shoe-to-anchor springs to the anchor pin of the brake assembly.

Abstract: A self-contained grinder attachment employs a rigid housing having an electric motor mounted thereon for driving both a grinding wheel and a blower which sucks air and loose particles entrained therein from the grinding area, the shaft on which the grinding wheel is mounted being connected to the housing by flexible and resilient connections thereby to isolate the grinding wheel from vibrations originating in the motor and in the lathe itself.

Abstract: A rotor is suspended from a body member which is mounted by two sets of bearings for substantially free pivotable movement about two orthogonally disposed intersecting axes, the axis of rotation of the rotor intersects the point of intersection of the two bearing axes, and a level indicating device is mounted to the body member.

Abstract: A portable bubble balancer incorporates a wheel support and pivot assembly which is spring biased in an upward direction into an interlocked position with the base of the balancer to prevent pivoting of the wheel support in the absence of a wheel thereon.

Abstract: A diving snorkel has a flexible, tubular section having a substantially smooth inner surface to permit laminar air flow therethrough.