Back to results
US 4,344,719 AGranted
Internally expanding railing coupling
AssigneeArchitectural Art Mfg., Inc.
InventorWenzel W. Thom
Life of this patent
Estimating the term…
Abstract
An internal expanding coupling for pipe railing including a slotted sleeve member positioned inside two abutted railing sections with a wedging member positioned within the slot for expanding the sleeve outwardly against the railing sections in a locking joint as the wedge member is drawn against the railing sections.
Claims7
An internal expanding coupling for tubular pipe railing comprising:
- a pair of tubular rail sections abutted end-to-end, each including a lateral opening spaced inwardly from the ends thereof;
- coupling means comprising a sleeve member inserted in the ends of each rail section, a longitudinal slot extending the length of the sleeve member, a pair of camming surfaces on said sleeve adjacent the slot converging toward and terminating in the outer diameter of the sleeve;
- wedge means having threaded openings therein positioned between said camming surfaces for spreading the sleeve member and locking the sleeve member and pipe sections together;
- and
- screw fastening means passing through said lateral openings in each rail section and engageable with the threaded openings in the wedge means to draw the wedge means and pipe sections together creating a rigid joint.
2 more elements
Dependencies are inferred from the claim text.