Abstract: A compound bow with primary and secondary pulleys at the distal ends of the flexible limbs designed to reduce the draw force at the end of the draw. Pulley shape is designed to alter the force-draw curve to provide a flat plateau at the maximum draw which drops off again to the holding draw force. Draw length is controlled by curvature contour at segments of the secondary cable pulleys to achieve short, medium or long draw lengths with selective pulley segments which can be attached to a base primary pulley. A draw string pulley has a first perimetric section which is circular and a second connecting curved perimetric section which has a progressively decreasing radii from each end to the center with radii less than that of the first section. In some embodiments, three or four zones are provided. These zones can be created with add-on plates secured to a basic pulley.

Abstract: A belt storage arrangement for a shoulder belt mounted on the upper rear corner of the door and a lap belt mounted on the lower rear corner of the door. A storage buckle is mounted on the upper rear corner of the door adjacent the shoulder belt anchorage and is adapted to receive a latch plate carried by the inboard ends of the lap and shoulder belt so that the lap and shoulder belt hang generally vertical along the rear edge of the door. A slip ring slidably encircles the lap and shoulder belts and falls vertically along the vertically hanging lap and shoulder belts to couple the belts in a neatly stored position overlying one another.

Abstract: Coded binary signals are coupled to an automotive vehicle by a magnetic signpost embedded in a traversed roadway lane. The signpost includes polarity coded magnetic pole faces having vertically directed flux lines at differing spaced longitudinal regions along the lane. Pole faces are arranged so a flux null is between adjacent longitudinal regions. Differing signals are coupled to vehicles going in opposite directions in adjacent lanes by unambiguously coding the signpost in opposite directions and arranging the pole faces so that magnetic flux continuously extends across a majority of both lanes. A detector on a vehicle includes a magnetic field concentrator including a pair of vertically extending and aligned low reluctance magnetic pole pieces having an air gap between them, in which a Hall plate is positioned. The pole piece closest to the road has shorter length than the pole piece remote from the roadway.

Abstract: A passive three-point lap and shoulder belt system includes a continuous loop of belt which is slidably mounted on the door adjacent the occupant's shoulder by a slide loop or pulley and has both ends mounted on the body inboard the occupant seat to define a double strand diagonal shoulder belt. A retractor provides the mounting of one of the shoulder belt ends to the vehicle body so that the shoulder belt is extended from the retractor and through the slide loop upon opening movement of the door and is retracted upon closing movement of the door. The lap belt has one end attached to the vehicle door generally adjacent the hip of the occupant and the other end attached on the shoulder belt strand mounted by the retractor and at a point thereon which travels from inboard the occupant when the door is closed to a position intermediate the retractor and the door mounted slide loop upon opening movement of the door.

Abstract: A passive three-point lap and shoulder belt system has the outboard ends of the lap and shoulder belts mounted on the vehicle body door respectively adjacent the hip and shoulder of the occupant. A retractor mounted on the body generally adjacent the inboard hip of the occupant winds a control belt which is connected with the lap and shoulder belts at the juncture of their inboard ends to establish the lap and shoulder belts in their occupant restraining positions when the door is closed. A door mounted belt stiffener is encased within the lap belt and includes a plurality of stacked abutting elements normally hingedly movable relative one another to allow the lap belt to fall limp across the occupant lap.

Abstract: A mechanically resonant ground motion sensor having a frequency response which is "tuned" to discriminate between applied vibrational forces which are destructive and those which are not. The basic operating principle of the sensor is that of an oscillating mass whose dynamic response to applied forces takes the form of viscously damped harmonic motion. The disclosed embodiments include a horizontal ground motion detector based on the movement of a pendulum in a viscous fluid and a vertical ground motion detector utilizing a vertically sprung dashpot cylinder moving through a viscous fluid. The detector is tuned to trigger a tripping mechanism in response to accelerations above a threshold value and within the critical range of destructive frequencies.