Component parts for watch movements
AssigneeEbauches Bettlach S.A.
InventorJean-Pierre Schluep
Life of this patent
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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.
Claims10
A component part for watch movements, consisting of a plastic body shaped solely by molding, with particles of a heavy metal dispersed throughout said body, said part having an average specific gravity of more than 8.
Component parts for a watch movement comprising a one-piece winding weight for automatically winding said movement, said winding weight comprising an oscillating sector portion, a pinion portion, and a hub portion with a cylindrical bore therein, said winding weight further consisting of a plastic body and of a load of particles of a heavy metal dispersed throughout said body, said weight being shaped solely by molding and having a specific gravity of more than 8.
Component parts for a watch movement comprising a balance wheel in one piece with a hub provided with a cylindrical hole intended to be engaged onto a cylindrical surface of a balance-staff, said one piece being shaped solely by molding and consisting of a plastic body and of a load of particles of a heavy metal dispersed throughout said body in such a manner that the specific gravity of said one piece be more than 8.
Dependencies are inferred from the claim text.