Air shaft

Details Air shaft Air shaft

1978-06-19

1981-03-10

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 7518, B65H 7524

Patent

active

042549205

ABSTRACT:
An expansible shaft including a hollow axially-extending body and operatively coupled core engaging and retracting sections within the body. The core engaging section includes a core engager movable relative to the body in a direction generally perpendicular to the axis of the body and biased towards a core engagement position in which it projects beyond the wall of the body; and the retracting section includes an actuator arranged to overcome the bias and move the core engager radially inwardly from its core engagement position.

REFERENCES:
patent: 2705111 (1955-03-01), Bruestle
patent: 2952418 (1960-09-01), Rice
patent: 3052420 (1962-09-01), Roberts
patent: 3507455 (1970-04-01), Andersson
patent: 3977616 (1976-08-01), Owens et al.
patent: 4142690 (1979-03-01), Karle et al.

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