Ultra-light pneumatic leaf expanding shaft

Details Ultra-light pneumatic leaf expanding shaft Ultra-light pneumatic leaf expanding shaft

2007-08-07

2007-08-07

Crawford, Gene O. (Department: 3654)

Winding, tensioning, or guiding

Coil holder or support

Radially expansible or contractile

C242S571200, C492S004000

Reexamination Certificate

active

10817142

ABSTRACT:
A generally cylindrical expansible shaft includes an outer profile, and a generally cylindrical inner body having a longitudinal axis and at least one first coupling element. At least two semi-circular leaf elements may be movably coupled to the first coupling element of the inner body by means of at least one second coupling element. The leaf elements may together substantially form the outer profile of the generally cylindrical expansible shaft. At least one thrusting element may be operatively disposed between the leaf elements and the inner body to move the leaf elements radially outwards relative to the longitudinal axis to increase an outer diameter of the shaft when in a first configuration, and allow the leaf elements to move radially inwards relative to the longitudinal axis to decrease the outer diameter of the shaft when in a second configuration.

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