Patents Assigned to Ebauches Bettlach S.A.
  • Reduction gear for electronic timepiece
    Patent number: 4357695
    Abstract: A pinion of a reduction gear intended for use in electronic timepieces having a stepping motor, particularly wrist watches, takes the form of a cylindrical body having an axial blind hole and two teeth milled at one end of the body. The flancs of the teeth are plane parallel surfaces. The distance between the axis of rotation of the pinion and the axis of rotation of a toothed wheel of the reduction gear is slightly less than the radius of the tip-circle of the wheel, so that the two teeth of the pinion block the wheel during the resting period of the motor. If a wheel with 60 teeth is used, it may constitute the fourth wheel in an electronic watch having hands.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: November 2, 1982
    Assignee: Ebauches Bettlach, S.A.
    Inventor: Peter Bachmann
  • Device for securing a watch dial to a watch-movement plate
    Patent number: 4291401
    Abstract: A cylindrical bearing segment of a preferably metal sleeve is positioned within a hole in a watch-movement plate. A portion of the sleeve intended to project inwardly beyond the plate is divided by a lengthwise slot into two claws which yield so that the sleeve can be inserted in the hole by simple axial pressure. When the dial is to be fitted in place, a dial-foot is inserted in the sleeve, pushing the claws apart by pressing against inner bulges at the ends of the claws, these bulges then pressing laterally against the dial-foot and locking it firmly in place.
    Type: Grant
    Filed: November 21, 1979
    Date of Patent: September 22, 1981
    Assignee: Ebauches Bettlach S.A.
    Inventor: Peter Bachmann
  • Shock-absorbing bearing for timepiece movements
    Patent number: 4143511
    Abstract: This invention relates to shock-absorbing bearings for time-piece movements, and more particularly to a bearing of the type wherein a one-piece plastic shock-absorbing element including a bearing-block portion, a bearing-cap portion, and a resilient zone connecting those portions is fitted in an opening in a metal support member.
    Type: Grant
    Filed: November 11, 1977
    Date of Patent: March 13, 1979
    Assignee: Ebauches Bettlach S.A.
    Inventor: Peter Bachmann
  • Display mechanism for timepieces
    Patent number: 3977179
    Abstract: A timepiece display mechanism having an indicator member on which are formed a series of indicating marks which overlap each other; some of the marks forming different indications are intermingled. The marks are viewed through an aperture which comprises a series of openings distributed along an outline corresponding to a superposition of all the indications; this outline is situated within an angle which has its apex at the center of the indicator member and is greater than an angle obtained by dividing 360.degree. by the total number of indications.
    Type: Grant
    Filed: April 22, 1975
    Date of Patent: August 31, 1976
    Assignee: Ebauches Bettlach S.A.
    Inventor: Peter Bachmann
  • Component parts for watch movements
    Patent number: 3942317
    Abstract: Component parts for watch movements which consist of a plastic body shaped by molding with heavy metal particles dispersed throughout to produce a component part having a specific gravity of more than 7.
    Type: Grant
    Filed: December 3, 1974
    Date of Patent: March 9, 1976
    Assignee: Ebauches Bettlach S.A.
    Inventor: Jean-Pierre Schluep