Procedure to manufacture watch cases

(19)

(11)

EP 0 775 951 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	25.10.2000 Bulletin 2000/43

(43)	Date of publication A2:
	28.05.1997 Bulletin 1997/22

(21)	Application number: 96500151.4

(22)	Date of filing: 22.11.1996

(51)	International Patent Classification (IPC)⁷: G04D 3/00, G04B 37/22

(84)	Designated Contracting States:
	AT BE CH DE DK FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	LT LV SI

(30)

Priority:

23.11.1995 ES 9502302

(71)	Applicant: Rosebud Diffusion, S.L.
	08008 Barcelona (ES)

(72)	Inventor:
	Manosa Oriach, Juan 08017 Barcelona (ES)

(74)	Representative: Davila Baz, Angel
	c/o Clarke, Modet & Co., Avda. de los Encuartes 21 28760 Tres Cantos (Madrid) 28760 Tres Cantos (Madrid) (ES)

(54)	Procedure to manufacture watch cases

(57) Procedure for the manufacture of watch cases, based on a disposable cylindrical metal container (1) that involves cutting the container cross sectionally in four portions (2 and 3), out of which the intermediate ones (3) are then diametrically cut to obtain semi-cylindrical shells (4) that are rolled up to form a spiral (5) and which are then subjected to an axial pressing procedure using a die (6-7) which shape corresponds with that of the watch case to be manufactured. A ring shaped part (8) is obtained upon which base is then mounted a crown (9) fitted with a peripheral rib (10).

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