Method of making a rung assembly for a ladder

Details Method of making a rung assembly for a ladder Method of making a rung assembly for a ladder

1976-07-14

1978-07-18

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

188194, 2853825, B21D 3900, B23P 1102

Patent

active

041006682

ABSTRACT:
The rung assembly is made of two piece construction and of metal while the siderail is made of a reinforced plastics material. The rung assembly includes a rung having a hollow end and a flanged fitting which is secured over the hollow end of the rung by swaging of the hollow end and fitting under a longitudinally applied compressive force. The compression force forms peripheral beads on the rung and fitting which interlock with each other. The rung assembly is secured to the siderail by any suitable fastening means such as rivets, bolts and the like which pass through the flange of the fitting and siderail.

REFERENCES:
patent: 1054865 (1913-03-01), Patterson
patent: 3924883 (1975-12-01), Frank

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