摘要:
New articulated hinge elements are provided for bracket systems with a double-T shaped carrying profile designed for containing electrical cables supplying control equipment that permit the articulated connection between parts or elements of such bracket system for horizontal slewing or swivelling movements with a cable passage which is open to the outside and which can be closed. Such hinge elements enable flexible connection of horizontal bracket parts with open and lockable cable guides for the continuous insertion of cables.
摘要:
A support arm has stationary support structure, a boom, a knuckle and an auxiliary jib section. The boom connects at one end to the support structure and at an opposite end to one end of the knuckle, and an opposite end of the knuckle connects to one end of the auxiliary jib section. Each connection is a pivotal connection for pivoting about vertical pivot axes. An opposite end of the auxiliary jib section connects to a main jib section through a pivotal connection for pivoting about a horizontal axis. First and second flexible tubes connect across the knuckle and the auxiliary jib section between the boom and the main jib section. The flexible tubes extend from points on the main jib section in parallel horizontally spaced relationship and pass slippingly and in parallel longitudinally through parallel horizontally spaced guide sleeves that are connected on the auxiliary jib section. In the region of the knuckle the flexible tubes converge and cross over one another in a loosely curved configuration toward horizontally spaced points on the opposite end of the boom. A drive adjusts the elevation of the main jib section by pivoting it about the horizontal pivot axis, between an upper position parallel to the boom and a lower position inclined downwardly thereto. This arrangement allows vertical rise and fall of the main jib section and pivoting of the jib horizontally relative to the boom.
摘要:
A low profile swivel coupling having a main body with a hollow cylindrical bearing surface, a front swivel member internally threaded to be screwed onto a threaded bearing seated on the bearing surface and rotatable on it whereby the front swivel member rotates about bearing surface of the main body.
摘要:
A swivel joint with electrical conduit guide means adapted to be mounted on a wall and having an opposed end to which an electrical fixture may be affixed. The joint includes a first and second half with mateable serrated teeth to lock one half to the other at an angle one to the other. In addition, a conduit guide means is mounted within one of the halves and fully enclosed by the other half and at least one half has an interior bore tapered downward in diameter presenting its smallest cross-section to said guide means. The guide means also includes structure to allow bending of said conduit with the angling of one half to the other without damage to said conduit.
摘要:
A support knuckle for a luminaire has a first body attached to the luminaire housing and a second body which can be attached to a mounting location. The first body has a recess with peripheral teeth and a passage to the housing interior. The second body has teeth which are matable with those on the first body at various angular positions. The two bodies are held together by a threaded fastener passing through an elastomeric sleeve.
摘要:
A weatherproof terminal or junction box structure for a luminaire adapted for connection by a mast to a building or pole. The structure enables access to the terminal or junction box area for wiring and inspection without disassembly of the mounting of the luminaire to the mast and without the necessity of disassembling the luminaire itself. The mast telescopes within a channel receiver of the luminaire housing for mounting purposes. The mast is slotted at its entry end, the slot being encompassed within an access opening which may be covered by a wire way cover. Removal of the cover exposes the wiring for connection and inspection. With the cover in place, recessed within the receiver, the connection of mast to luminaire produces a weatherproof mounting. A second embodiment omits the need for the cover by normally setting the entry end slot rotated out of registration with the channel opening. Access to the slot may be had by rotating the luminaire about the axis of the channel receiver.
摘要:
A connecting member for the reception of electrical wiring between two lamp fittings in a strip lighting scheme comprises an arched channel spanning the distance from the interior of one said lamp fitting to the interior of the other and adapted to contain said electrical wiring; two covers through which the arched channel passes and which with interposed seals fit over openings in the top of the lamp fittings; and spring catches on the underside of said arched channel adapted to engage the sides of the openings and to ensure a tight fit of the covers on the openings.