Title: Winding time-setting push-button assembly for a watch

Abstract: A watch winding and time setting assembly comprises a crown body having an axial passage extending therethrough, and a push-button located in said axial passage. Said passage comprises a first portion of circular cross-section in which is located a cylindrical head of the pushbutton, a second portion of non-circular cross-section greater than the diameter of the first portion and in which a shoulder of the pushbutton is keyed, and a third cylindrical portion having a diameter no smaller than the second portion, which third passage portion has a sleeve fixed therein for receiving and retaining a compression spring. Said spring biases said shoulder into abutment with the lower edge of the first passage portion, and the sleeve acts as a limit stop for said shoulder portion.

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Inventors: Wenger, Karl (Chambesy, CH)

Application Number: 588710
Filing Date: 1975-06-20
Publication_date: 1976-11-30
Assignee: Boninchi S.A. (CH)
Primary Class(es): 368/290 968/34, 968/339, 968/DIG1
Other Classes:
US Patent Ref:

2974474	Mar, 1961	Wegner	58/50.
3452819	Jul, 1969	Simon	58/90.
3783607	Jan, 1974	Fowrer	58/50.

Other Refs:
Primary Examiner: Jackmon, E. S.
Assistant Examiner:
Attorney: Burns; Robert E., Lobato; Emmanuel J., Adams; Bruce L.