Bar or rod or tube frame multi-position assembly clamp

Details

Inventors: Doyle, Patrick;
Assignee:
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:

A bar or rod or tube clamp-type connector for assembling a frame to be covered by a woven fabric or tarpaulin or plastic film or sheet wherein the clamp-type connector comprises at least two rigid metal elements and one pierced resilient or cushioning element and wherein each rigid element includes a recessed portion having a limited inner friction surface which is grooved or knurled and a polygonally apertured flange having rounded corners extending therefrom and a carriage bolt having a polygonal locking portion and a cylindrical threaded portion capable of being tightened by a nut and lock washer which threaded portion extends through the apertured flange of each rigid element and the pierced resilient or cushioning element, such clamp-type connector being capable of clamping two bars or rods or tubes in parallel or angular relation to produce a frame to be covered by material in contact with the frame and the rounded corners of the flanges of the connector elements.

DETAILED DESCRIPTION It is an object of the present invention to provide an improved bar or rod frame assembly multi-position clamp in which the relative direction or orientation of one bar or rod member with respect to another may be readily varied by rotating one clamping member about a carriage bolt while a polygonal extension from the head of carriage bolt serves to lock in position a second clamping member formed with a corresponding polygonal opening formed therein.
This object of the invention is achieved in a bar frame assembly multi-position clamp comprising first and second clamping members at least one of which is formed with a polygonal opening and each of which includes a first recessed and grooved or knurled portion surrounded by a smooth marginal area adapted to receive a bar member and a second wide flange portion having a narrow ridge for extension at right angles thereto and a carriage bolt assembly for securing the first and second clamping members together with a third clamping member disposed between the first and second clamping members and the bar members received by the first and second clamping members; said carriage bolt assembly including a carriage bolt having an inside flat surface from which extends a polygonal locking formation and from which, in turn, extends a cylindrical threading portion on which is mounted a lock washer and an internally threaded nut.
The polygonal extension on the carriage bolt prevents one clamping member formed with a corresponding polygonal opening from turning while the other clamping member may be rotated to accomplish the building of the desired structure in angular form desired.
These and other novel features of the present invention are described in greater detail in the following description.

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