Abstract: A safety device particularly for motorcycle instructors having a rear seat braking control that can be operated independently of the main foot lever type motorcycle brake. In addition, a motor cut-off switch can be employed to operate simultaneously with the use of the auxiliary motorcycle brake in order to de-activate the motorcycle engine, and assist in the braking of the motorcycle. The auxiliary brake can be mounted on any motorcycle currently being manufactured and sold. The safety device takes a further form in which the instructor can steer, accelerate, and shift the motorcycle as well as braking and de-activating the engine.

Abstract: A ski equipment securing and carrying device including a body portion having a pair of hingedly interconnected cover segments, each cover segment including a ski receiving portion and ski pole receiving portion provided with yieldable members for respective accommodation therewithin of skis of various widths and thicknesses and ski poles of various diameters, the cover segments being hingedly interconnected for closure together with the ski receiving portion and pole receiving portion of one confronting the respective ski receiving portion and pole receiving portion of the other in cooperative relationship for respective clamped engagement of skis and ski poles within the ski and ski pole cavities by the yieldable members thereof. The cover segments may include latch means for fastening them together in a manner to inhibit removal of skis and poles secured therewithin, and elongated fastening elements may be attached thereto for securement thereof to an immovable object such as a tree or ski rack.

Abstract: Procedure and apparatus for monitoring the lash and the toe-in of a vehicle steering system by comparing the angular position of the vehicle's steering wheel as the front wheel spindles pass through preselected reference positions during tuning maneuvers. For example, an angular position transducer at one front wheel determines the instant at which that wheel spindle crosses the reference position in one direction and gates the output of an angular position transducer of the steering wheel to a comparator which stores the signal corresponding to the instantaneous angular position of the steering wheel.

Abstract: A grille system for a tilt cab-over-engine truck includes a one-piece, rigid frame grille which extends above and below the cab pivot axis and has a width greater than the radiator tunnel opening. The grille is mounted for automatic swinging movement away from the radiator and front of the cab in a controlled path as the cab is tilted forward so that the grille does not obstruct the tilt path of the cab. The system should be automatic in order to maximize operator efficiency. Guide rods connected to the side of the grille control the path of the swinging movement to prevent the grille from swinging out in a random pattern as the cab is tilted forward, and these guide rods also guide the grille back into position and hold the grille against rubber stops to prevent vibration and bouncing of the grille when the truck is being driven.

Abstract: An engine enclosure comprises a support frame having a pair of vertically disposed rear posts interconnected at their upper ends to a pair of vertically disposed center posts by tie rods. A counterweight mounting device is secured on the outside of the rear posts to form an integral part thereof.

Abstract: A ski including at least a body and a top bend portion extending from one end of said body, said top bend portion being provided with a plurality of air holes passing through said top bend portion from the front to the back surface thereof and allowing air flow to pass therethrough in gliding of said ski.

Abstract: A bicycle is provided having front and rear frames pivotally connected together near the pedal bearings and resiliently coupled by a shock absorber, in which the rear frame has a pair of inclined structural members extending on either side of the seat-supporting tube of the front frame and holding a rear end of the shock absorber at a position directly in front of the seat-supporting tube.

Abstract: A small portable motorized attachment for propelling portable scaffolds from place to place is provided comprising a pair of electrically operated propulsion units adapted to detachably replace the front caster wheels of a scaffold and a control means for operating the units, each unit comprising a base having a propulsion wheel operatively connected to a friction drive means and a motor swingably cantilevered from the base with the weight of the cantilevered assembly pressing a gear driven friction drive wheel into engagement with the propulsion wheel so that the units when stably connected with one another in place on the scaffold act in unison to brake, clutch and propel the scaffold.