Hinge structure for platen covers

Details Hinge structure for platen covers Hinge structure for platen covers

1977-07-28

1978-09-19

Feldbaum, Ronald

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Sash balances

Spring

220335, E05D 1110

Patent

active

041142365

ABSTRACT:
The hinge structure which permits the platen cover to be forced toward the platen when positioned thereover and which will hold the cover in any desired positon between about 20.degree. and 90.degree. with respect to the platen. The hinge structure comprises a leaf spring on the machine frame which is urged into contact with a cam surface connected to the cover which cam surface in cooperation with the leaf spring provides a torsional force about the cover axis to counterbalance the weight of the cover and a frictional force which will maintain the cover in its desired fixed position.

REFERENCES:
patent: 3833964 (1974-09-01), Harcourt
patent: 3857198 (1974-12-01), Post
patent: 3888386 (1975-06-01), Svensson

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