Back pack frame

Details Back pack frame Back pack frame

1975-06-20

1977-04-19

Spar, Robert J.

Package and article carriers

Vehicle attached

Carrier attached to special purpose vehicle

403298, A45F 310

Patent

active

040183700

ABSTRACT:
A plastic tubular pack frame is disclosed employing a unitary main frame member and uniquel y constructed transverse support members including a pair of tee connectors interconnected by a tubular cross member. In one embodiment, a transverse support member is formed by heating a section of plastic tubing, placing the ends of the tubing on the pin portions of tee connectors and allowing tubing to cool and shrink onto the pins. The pin portions of the tee connectors include a series of circumferentially and axially extending ribs which engage the internal walls of the box ends of the cross member forming a connection normally fixed against axial disconnection and normally fixed against rotation but rotatable without fracture in response to above normal rotational torques.

REFERENCES:
patent: 1025759 (1912-05-01), McCluskey
patent: 3000656 (1961-09-01), Hollaender
patent: 3219243 (1965-11-01), Mack
patent: 3734366 (1973-05-01), Wood
patent: 3851980 (1974-12-01), Worth et al.
patent: 3860157 (1975-01-01), Richards et al.

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