Abstract: A temperature and stretch compensating wire tensioning system. In parallel wire capacitive security systems, the maintenance of proper tension in the sensor wires in essential in order that false alarms be avoided as a result of movement of the sensor wires in the absence of an intruder. In the present invention, "V"-shaped plastic tensioners are used on several of the wire support posts in cooperation with wire guides on other posts to provide the requisite wire tension. The plastic tensioners are constructed from pairs of identical elongated arms each having an open loop at the proximal end thereof adapted to snap onto a support post for easy assembly of a security system in a manner which keeps them perpendicular to the longitudinal axis of the post and directed tangentially away from the outer surface thereof.

Abstract: A tie-down device interposed between a hook adapted to be connected to a vehicle frame and a chain adapted to be connected to a transporter and characterized in that the tie-down device includes a webbing which is encapsulated in a rubber jacket with the webbing being folded so as to provide a pair of longitudinally spaced loop portions one of which is formed by the overlapped and sewn together ends of the webbing and is connected through a spool member to the hook and the other of which is connected through a spool member to the chain.

Abstract: A retractor for storage of a long, flexible line includes a thin, flat, elongated strip spring member of tough, resilient, inelastic resin, preferably an oriented polyester resin such as polyethylene terephthalate, the spring having an arcuate configuration exceeding 180.degree. up to a full 360.degree.. A plurality of small pulleys mounted on the spring member project inwardly thereof at spaced locations with half of the pulleys located on each side of a centerline. The line is anchored to the spring member near one end of the centerline and extends back and forth across the centerline around each pulley to store a substantial length of the line within the spring member.

Abstract: A device for supporting a hanging plant and for slowly rotating it to expose different sides to sunlight. The device comprises a cord for attachment at one end to a hook or other fixed object and for attachment at the opposite end to the plant. The cord extends in length and winds in one direction in response to an increase in the weight of the plant by feeding of water and contracts and winds slowly in an opposite direction as the water evaporates from the plant.

Abstract: Disclosed herein is a snubbing device for use with traditional braided cordage. Traditional braided cordage exhibits a certain elasticity when tensioned by having the longitudinal axis of the braided cordage pulled in such a manner that the braid and resulting diameter constricts itself. In a double braided environment, an outer braid would constrict upon an inner braid, which would in turn constrict upon itself. A resilient elastic insert is provided within the inner core thereof, thereby causing the inner braid to constrict thereon.

Abstract: The invention is a leash which attaches to a surfboard at one end and to the surfer's ankle by means of a novel Velcro sandwich-type strap structure at the other end, the leash comprising two separable sections one of which includes an elongated length of elastic tubing through which passes a length of cord which is fixed at the ends of the tubing and is coiled somewhat inside the cord such that the elastic will stretch to a certain extent until it is stopped by the cord, the other section of the leash comprising a stronger section of tubing having no cord inside to provide a resilient buffer when the slack is taken up in the line within the first tubing.

Abstract: A spring hanger assembly for suspending pipelines includes spring carrying means attachable to a supporting structure, a first sprung member carried by the spring carrying means, a second sprung member carried by the first sprung member, and locking means for releasably securing the second sprung member and the spring carrying means against movement relative to one another and thereby securing the first sprung member against movement relative to the spring carrying means and the second sprung member.

Abstract: A device for changing the amount of linear movement in a linkage system, preferably for reducing the movement, consists of a hollow body into opposite ends of which a tube and a co-axial rod extend. Attached to the inner end of the rod is a pair of flanges which extend through slots in the tube. A compression spring is lodged in the body between the flanges and an end of the body and a further compression spring is lodged between the flanges and an abutment on the tube at the opposite end of the body. Preferably, the rod passes with clearance through a sleeve forming an extension of the body and a viscous material is provided in the sleeve around the rod to act as a damper to short term movements of the rod.

Abstract: An arrangement for preventing the capsizing of trimaranes, and to facilitate their righting, comprising a main hull, two stabilizing hulls pivotally connected to the main hull by a pair of arms and further including a pair of extensible elastic members to restrain the upward movement of the stabilizing hulls and a plurality of flexible, non-extensible members to restrain the downward movement of the stabilizing hulls.

Abstract: The hooked ends of the springs or like members by which the bed of a trampoline or similar apparatus is suspended from its frame are equipped with protective sleeves of flexible material. The sleeves are split at their outer ends to form two flaps, one of which covers the exposed ends of the hooks to prevent injury to a performer inadvertently striking them, while the two flaps together are foldable back onto the sleeve to assist hooking and unhooking of the springs to and from the bed and the frame.

Abstract: A surfboard leash for attaching a surfboard to a surfer, having a tubular outer element made of a resilient material such as rubber, and a partially resilient inner reinforcement element made from a material having a limited stretching ability, such as braided nylon cord. The natural length of the inner reinforcement element is several times the natural length of the outer casing, so that when unextended it lies coiled within it, but the maximum stretched length of the inner reinforcement element is less than the maximum stretched length of the outer tubular casing so that the outer casing is protected from breakage.