Abstract: A transport drawbar for an agricultural tractor has an elongate forward drawbar section of substantially uniform rectangular cross section that mounts on the tractor in the conventional way. An elongate second drawbar section extends to the rear from the forward section. The second drawbar section has the same vertical thickness as the forward drawbar section and a substantially greater width. A trailing drawbar section extends to the rear from the second drawbar section, the trailing drawbar section having the same vertical thickness as the forward and second sections and a width substantially the same as the width of the forward section. Two tapering transition sections are provided between the second drawbar section and the forward and trailing drawbar sections respectively. Two angular offsets are formed in the second drawbar section such that the trailing drawbar section is parallel to and offset downwardly from the second drawbar section.

Abstract: A grader vehicle has a vehicle body mounted on two drive tracks. A boom is mounted on the front of the vehicle and extends to the front of the body. A third drive track is mounted on the leading end of the boom by a steering mechanism for rotation about an upright steering axis. The three tracks are driven by separate hydraulic motors. The use of a steering, driven track on the boom provides a tractive force pulling the vehicle forwards in the desired direction of travel and positively driving the leading end of the boom in the direction of a turn. The track also provides a degree of packing at the center of the vehicle's path that can not be achieved with a ski gliding on the surface. This is of particular importance when packing ski trails with the vehicle. For grading purposes, the vehicle has a grader blade across the front of the vehicle and a second blade leading the front track.

Abstract: A snowmobile stand mechanism for drive-track type snowmobiles is provided comprising a stand rotatable between a transport position where the stand is not engaged and a use position where the stand is engaged and elevates the drive track above the ground surface, the stand comprising leverage means that require minimal physical exertion or, alternatively, motor-driven operation.

Abstract: A method for strengthening a truss having a principal rafter and a plurality of struts coupled to the principal rafter, defining a frame structure of the truss. The method includes the use of a bracket which is coupled between the principal rafter and one of the struts. The bracket includes a channel arranged to receive and mount the rafter therein. A strut anchor is coupled to the channel and extends outwardly therefrom for anchoring the channel on an outermost strut defining an end of the truss. The bracket provides torsional support and load bearing support between the strut and the principal rafter.

Abstract: A twisted wire tie for concrete forming has an elongate loop with a single strand of wire on one side and a twisted double strand on the opposite side. Two stops on the tie are formed at opposite ends of the twisted double strand and engage the twisted strand and the single strand so as to prevent unwinding of the twisted strand when the tie is placed in tension.

Abstract: A roadwork safety unit mounts on the receiver hitch of a vehicle and connects to the conventional trailer lighting coupling. The unit includes a carrier for carrying the usual equipment to a site where the safety unit is to be used, for example cones, picks, shovels, rakes and pole-mounted signage. The carrier also carries a telescopically extendible standard supporting a light unit that includes a red stop light and a flashing amber warning light. The lights may be operated by a traffic control person also handling the pole-mounted signage. The unit is quickly and easily mounted on a vehicle for transport to a roadwork site and can be transported along the road with moving roadworks. Floodlights are mounted on the standard to illuminate the area beside the vehicle where the traffic control person would normally be standing. This provides added visibility and safety in night use.

Abstract: A golf hole cup has a synthetic plastic cup component molded as a single, monolithic unit. This includes a cylindrical outer liner tube, a central ferrule support core tube and a mounting structure, including a cone support flanges supporting the core tube in the center of the liner tube. Molded into the cup component is a cylindrical metallic insert that forms the inner surface of the core tube to resist wear and damage from the ferrule of a flagstick. The insert is preferably formed from bearing bronze.

Abstract: A transmission enhancement system is used for strengthening low frequency cable locating signals on the metallic shields of long underground cables. The system includes equalization circuits on the cable armour or shield at regular intervals, for example at splice locations. The equalization circuit includes an inductor that significantly reduces the rate of attenuation of the low frequency tone signal and greatly enhances the strength of the signal at distances where the signal would otherwise be very weak or unusable. The equalization circuit may be a resonant circuit having a capacitor connected in parallel with the inductor. The capacitor compensates for the inductor's attenuation of high frequency tones for local location purposes. The preferred embodiments of the equalization circuit include a surge arrestor coupled in parallel with the inductor and capacitor.