Abstract: A toy vehicle comprises a chassis having a front end, a rear end and first and second lateral sides extending between the ends. Two wheel trains are disposed on separate lateral sides of the chassis. Each train includes first, second, third and fourth wheels, a first pair of the wheels being mounted on separate axles fixed with respect to the chassis and a second pair of the wheels being mounted on separate axles movable along the first lateral side of the chassis. A separate continuous track extends about each wheel train so that the track engages over at least the first wheel and another other wheel. A separate linkage connects each second pair of wheels with the chassis and is configured to displace the second pair of wheels between a first wheel arrangement in which the wheels of the train are generally disposed in a single row, and a second wheel arrangement in which the wheels of the train are generally disposed in two rows and all the wheels engage the track.

Abstract: A toy vehicle comprises a chassis having a front end, a rear end and first and second lateral sides extending between the ends. Two wheel trains are disposed on separate lateral sides of the chassis. Each train includes first, second, third and fourth wheels, a first pair of the wheels being mounted on separate axles fixed with respect to the chassis and a second pair of the wheels being mounted on separate axles movable along the first lateral side of the chassis. A separate continuous track extends about each wheel train so that the track engages over at least the first wheel and another other wheel. A separate linkage connects each second pair of wheels with the chassis and is configured to displace the second pair of wheels between a first wheel arrangement in which the wheels of the train are generally disposed in a single row, and a second wheel arrangement in which the wheels of the train are generally disposed in two rows and all the wheels engage the track.

Abstract: This lighting fixture enclosure comprises a back housing and an adjacent front housing separable from the back housing. The back housing includes a base; and the front housing includes a cavity in front of the base and a wall partially surrounding the cavity and terminating in a free end adjacent the base. The back housing includes a cradle on said base for receiving a peripheral portion of one end of a wire feed-through conduit. The front housing includes a notch in the free end of said wall for receiving another peripheral portion of the conduit. A projecting leg on said front-housing wall receives clamping means which, upon operation, forces the front housing toward the back-housing base, loading the leg in a bending mode, and also clamping the conduit end between said cradle and the wall portion bordering the notch.

Abstract: An apparatus and method for encoding and decoding a television signal are disclosed in which the horizontal sync pulses and the first section of the video signal are inverted, and the inverted horizontal sync pulses and video signals are reduced in amplitude by a predetermined amount.