Abstract: Melt blown bicomponent fibers comprising a sheath of polyethylene terephthalate or a copolymer thereof and a core of nylon 6,6 and a reservoir or a nib in a writing or marking instrument comprising a porous element formed from such fibers bonded to each other at spaced points of contact. For use as a nib the core polymer may also be polybutylene terephthalate.

Abstract: Melt blown bicomponent fibers comprising a sheath of polyethylene terephthalate or a copolymer thereof and a core of nylon 6,6 and a reservoir or a nib in a writing or marking instrument comprising a porous element formed from such fibers bonded to each other at spaced points of contact. For use as a nib the core polymer may also be polybutylene terephthalate.

Abstract: A upper track roller mechanism for an automotive vehicle sliding door is provided in which the upper track is formed as a generally U-shaped track member having centering mechanisms associated with it for preventing vertical movement of the roller into rubbing contact with upper or lower portions of the track. The centering mechanisms may include one or more chamfers formed on the outer wall of the track and a washer carried adjacent the roller in juxtaposition with the portion of the track.

Abstract: A sensing device. The sensing device comprises a body containing a arcuate tube. A first conductor in the tube is able to move along the tube. There is a plurality of spaced contacts within the tube and conductors extending from the spaced contacts. There is a remote read-out to receive the information from the conductors to indicate the position of the first conductor in the tube and thus the inclination of the tube.

Abstract: A spreader to be mounted on a vehicle. The spreader has a main container to hold a particulate material and an outlet for a particulate material. The particulate material can be dispersed from the outlet and there is an electric motor adjacent the main body to drive the particulate material from the body. This electric motor has a drive shaft that extends to an outlet. There is a feeder, for example a screw conveyor, on the drive shaft to force the particulate material from the outlet when the shaft rotates. The spreader includes seals to prevent leaking of the particulate material from the body when the shaft is not rotating and also has the ability to warn when the level of particulate material in the main body is too low.

Abstract: Tracked vehicles are steered by the differential speed between the two tracks. This transmission has two output drive shafts which can be driven at different speeds for controlling such a tracked vehicle. Identical drive trains are provided between an input shaft and each of the two output shafts. The drive trains each include transfer gears mounted on a pivotable spider. A second input rotates the spider. One input shaft is used for driving the two output shafts. Rotation of the other input shaft adds to the rotational speed of one output shaft and subtracts from the rotational speed of the other output shaft. By using identical drive trains and transfer gears on a spider in each of the drive trains, the transmission is balanced so that substantially the same torque is required for changing the speed of both drive trains.

Abstract: This power transmission has a steerable sleeve mounted for pivoting about an axis coaxial with the output shaft of the transmission. The steerable sleeve can be pivoted in either direction with equal torque regardless of rotation of the output shaft. The output shaft has two output gears. Two gear drive trains that are substantially the same interconnect the input shaft to the two output gears of the transmission. In an exemplary embodiment the first drive train includes a ring gear driven by the input shaft, at least one planetary gear, and a sun gear which is the first output gear on the output shaft. The second drive train has a ring gear driven in the opposite sense of rotation from the first ring gear, at least one planetary gear and a transfer gear face substantially the same as the first output gear. The transfer gear is connected to a reversing gear assembly on the steerable sleeve so that torque is applied to the second output gear on the shaft.

Abstract: This power transmission has a steerable yoke mounted for pivoting about an axis coaxial with an input or output shaft. The steerable yoke can be pivoted in either direction with equal torque regardless of rotation of the shaft. Two balanced drive trains interconnect the input and output of the transmission. Each drive train includes a ring gear, a planetary gear and a sun gear. The two planetary gears are interconnected by a spider which is free to pivot and compensate for motion of the steerable yoke. The spider assures that advance of one planetary gear drive equals recession of the other planetary gear drive. Since the two drive trains are equivalent and contra-rotating, torques are balanced.

Abstract: An improved parking lot traffic control means comprising an elongate series of tire engaging spikes extending transverse an entering and exit lane; said spikes are carried by an elongate shaft rotatably supported below the surface of the lane to project upwardly therefrom and from the surface of the lane when the shaft is in a normal rotative position; drive means including a reversible electric motor is provided to rotate the shaft to an actuated rotative position where said spikes project horizontally and below the surface of the lane; control means is provided to operate the drive means and includes manually operable actuating switch means at one end of the lane to cause the motor to rotate the shaft from its normal to its actuated position and automobile operated actuating switch means at the other end of the lane to cause the motor to rotate the shaft from its actuated to its normal position.