摘要:
The generation of tape tension, based on the capacity for elastic flow of elastomeric incompressible layers, in a tape transport apparatus employing at least one capstan in contact with supply and take-up reels of tape is accomplished by producing a higher compressive force at the point of contact between the take-up reel and the resiliently deformable peripheral portion of the capstan than at the point of contact between the supply reel and the capstan. The difference in compressive forces is brought about by an additional force which is produced by means of a drivable rotating body and is transmitted to the tape reel carriers by means of a cable which is guided over this rotating body.
摘要:
A monorail system having a rail surface that is provided for small vehicles traversing an incline or slippery areas, with the surface having a plurality of spaced recesses positioned in those areas to form gripping edges for the drive wheels of the vehicles. The recesses may be of a variety of shapes and positioned in different ways to provide the proper grip. The recesses may be mechanically punched into a separate elongated flat bed riveted in appropriate locations to the rail. The punching may be done in such a way so as to form raised ramp-like edges adjacent the recesses to help with the gripping action. The ramp faces face downwardly in inclined areas. The drive wheels of cooperating vehicles may have elastic treads to help with the gripping action.
摘要:
A slide is provided, preferably a water slide, which is self-supporting and may be erected adjacent any amusement location. The slide of the invention provides a substantially longer sliding surface for the amusement of users without requiring an inclined ground surface for support of the slideway. The slide incorporates a pathway for ascending the slide, and preferably a water supply facility to enhance the sliding action. The entire structure is supported on one or more vertical supports resting on the ground.
摘要:
The invention covers a passenger slide with bearings or ties installed at a slope, with length-adjustable interlocking supports resting on the bearings for the slide segments which fit on the tubular carriers arranged at the upper end of the length-adjustable supports.
摘要:
A dual braking system is provided for high speed sleds in which the center of gravity of the operator is placed between fore and aft brake shoes, which are operated simultaneously by the operator without the need for shifting positions. Thus, the brake system is effective even though the operator is naturally shifted forward by the braking action. Also included in the brake system is a wheel assembly, which may be operated by the single brake lever to accommodate fast acceleration. Operating the brake lever to shift the wheel assembly into effective operative shifts the center of gravity of the operator over the wheel assembly. The dual brake shoes pivot around horizontal axes and are disposed adjacent the longitudinal centerline of the sled to avoid lateral deflection of the sled when the brakes are applied.
摘要:
Method of providing position, e.g. attitude control for space vehicles having control thrusters producing thrust for imparting momentum upon the vehicle, further having a control apparatus for the thrusters causing them to produce thrust bursts or pulses so that controlled, incremental momenta be imparted upon the vehicle, such thrust bursts being triggered respectively when the vehicle tends to move beyond selected descrete deviations and error position levels. The highest level, one in either direction, define a range of positional tolerance, and the thrusters are operated, so that a relatively small momentum is produced when the vehicle tends to move past either of said maximum levels; the thrusters are operated on the other levels under these conditions. The momentum produced on any such level is smaller than the sum of momenta to be produced on all higher position levels; such corrective momentum is produced only after momenta have been produced for all selected smaller position levels; and each level (except the highest) is used only for each sequence of thrust bursts leading to a residual error cycle wherein the vehicle is caused to oscillate within the range of tolerance with reversal occuring on each range limit.