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Barrier system

  • US 4,533,122 A
  • Filed: 06/07/1982
  • Issued: 08/06/1985
  • Est. Priority Date: 06/10/1981
  • Status: Expired due to Fees
First Claim
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1. An upright for a barrier system of the type comprising a plurality of uprights connected by rails, ropes or the like, the upright comprising a base, a column upstanding therefrom, a head member mounted on the column, the head member including a first part and a second part, means securing said first part to the column, said first part affording a plurality of peripheral slots each extending longitudinally and opening also onto one axial end face of the first part, said slots opening onto the periphery of said first part via respective restricted throat portions, whereby radial withdrawal of fitments of complementary form from said slots can be prevented, the first part including a central portion, said second part of the head member further comprising a cap having a central portion, a peripheral skirt spaced outwardly from said central portion of the cap and providing an end face opposing said end face of the first part, and capable of mating engagement with said end face of the first part to close off the axial ends of said slots, the central portion of the cap and the central portion of the first part having inter-engaging screw threads thereon about a longitudinal axis of the head member whereby the cap can be screwed down into the first part, to engage, by said end face of said skirt, said end face of the first part, by rotation of the cap, relative to the slotted member, about said axis or can be unscrewed to move said end face of the cap skirt away from said end face of the slotted member to space said end faces from one another and allow insertion or removal of fitments into or from said slots, said head member having a passage extending therethrough along said longitudinal axis, through the slotted member and the cap member, an internal clutch within said passage including a collet carried by one of said part of the head member and means for contracting said collet carried by the other of said parts of the head member, whereby said collet contracting means can be operated to contract the collet by screwing said cap down onto the slotted member.

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