摘要:
A trailer includes a trailer frame using suspension cables supported from vertically extending towers on opposite sides of the trailer frame and connected to distal ends of the trailer frame for supporting distal portions of the trailer frame. The trailer bed frame comprises a plurality of folding frame sections which can be unfolded into planar alignment to form the trailer frame and folded into an overlapping or stacked alignment for storage. Left and right wheels are rotatably mounted on left and right suspensions which are removably securable to left and right sides of the trailer frame. The suspensions comprise quarter elliptical leaf spring suspensions formed from curved upper and lower leaf springs spaced apart by inner and outer spacers.
摘要:
Vehicle (4) are automatically identified using a specially constructed windshield (8) which carries identifying indicia (10). The window is a layered construction, similar to safety glass, and includes an intermediate layer (20) sandwiched between inner and outer glass layers (22, 24). The intermediate layer carries the identifying indicia, typically in a bar coded pattern. The indicia are invisible to the unaided human eye but are detectable when illuminated with a chosen electromagnetic radiation, typically infrared light from a CO.sub.2 laser. The bar coded indicia are preferably unique to the particular vehicle. Since the bar coded indicia can cover substantially an entire windshield, and since windshields are normally kept clean, sensing of the indicia is aided. The vehicle identification system thus permits the non-invasive identification of a vehicle even under adverse environmental condition.
摘要:
A guard for a power transmission shaft such as a tractor pto shaft 18,20 comprises a flexible convoluted tubing 24 with end couplings 26 which together totally enclose the rotating parts. The tubing 24 can extend and retract axially to suit a variety of shaft lengths, and can flex transversely to accommodate turning of the tractor/implement combination. A tube 34 journalled on bearings 36, or equivalent bearing means, prevents damage to the tubing 24 by the shaft 18,20.