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US 4,397,566 AGranted
Wrist-watch casing
AssigneeMontres Rado S.A.
InventorMarc Lederrey
Life of this patent
Estimating the term…
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AssigneeMontres Rado S.A.
InventorMarc Lederrey
Estimating the term…
The glass (1) of the wrist-watch casing carries the ornamental pieces of the casing visible face surrounding the watch dial (17). These pieces comprise a frame (2) of precious or semi-precious material or a very thin metallized layer (31) deposited under the glass (1). The frame (2) is glued in an indissoluble and resistant manner under glass (1) and a spacing frame (3) is similarly glued under frame (2). The collar (6) of tapped sockets (5) is caught and glued in lodgings (7) provided in the face of frame (3) which is glued to frame (2). The unit composed of these pieces (2, 3, 5) and the glass (1) are removably secured to the caseband (8) by means of screws (9) crossing the caseband and engaging sockets (5) fitting borings (19) of the caseband. Under the metallized layer (31) a single spacing frame (25) of base metal is necessary and sockets (5) are welded in lodgings (26) of that frame.
A watchcase comprising a caseband having a substantially flat upper face and being adapted for receiving and surrounding a watch movement provided with an analogical time display means, a section of glass, having an opaque unit secured thereto, covering said upper face of the caseband, said unit including a flat frame secured to said glass, tapped sockets having a collar extending radially outwards at their base and being individually secured to said frame, screws screwed into said sockets from the bottom side of the watchcase for removably securing said glass and said unit to said caseband, said glass and opaque unit being dimensioned such that the entire analogical time display means is visible when viewed along an axis perpendicular to said upper face of the caseband.
Dependencies are inferred from the claim text.