Winding time-setting push-button assembly for a watch
Patent 3994125 Issued on November 30, 1976. Estimated Expiration Date: 
November 30, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 30, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2974474 3452819 3783607 InventorAssigneeApplicationNo. 588710 filed on 06/20/1975US Classes:368/290, Push-button stem type968/339, Of winding stems (construction of winding crowns subclass 24; in combination with hermetic sealing subclass 328) [G04B 37/10]968/34Operation by rotation and axial movement with extra function of axial shift of operating element, e.g., crown combined with push button, etc. (winding up by push button subclass 24) [G04B 3/04F]ExaminersPrimary: Jackmon, Edith S.Attorney, Agent or FirmForeign Application Priority Data1974-07-02 CHAbstractA 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. | |
