Orientable back for a timepiece

Patent metadata

Field	Value
Publication number	US-11698607-B2
Application number	US-202016735948-A
Country	US
Kind code	B2
Filing date	Jan 7, 2020
Priority date	Jan 9, 2019
Publication date	Jul 11, 2023
Grant date	Jul 11, 2023

Abstract

A back ( 1 ) for a watch case ( 50 ), the back ( 1 ) including a first element ( 10 ) arranged so as to be screwed onto the watch case ( 50 ), and a second element ( 20 ) including an end face bearing a pattern (M), the second element ( 20 ) being mounted such that it can move in rotation about an axis (C) passing through the centre of the case ( 50 ), wherein the second element ( 20 ) has a brake arranged so as to hold same relative to the first element ( 10 ) in different angular positions about the rotational axis (C), the brake being disposed between the first and second elements ( 10, 20 ).

First claim

The invention claimed is:

1. A back ( 1 ) for a watch case ( 50 ), the back ( 1 ) comprising:
a first element ( 10 ) arranged so as to be screwed onto the watch case ( 50 ); and
a second element ( 20 ) including an end face bearing a pattern (M), the second element ( 20 ) being mounted such that the second element can move in rotation about an axis (C) passing through the centre of the case ( 50 ),
wherein the second element ( 20 ) comprises braking means arranged so as to hold same relative to the first element ( 10 ) in different angular positions about the rotational axis (C), the braking means being disposed between the first and second elements ( 10 , 20 ), and
wherein the first element ( 10 ) comprises a wall ( 13 ) inclined outwards relative to the case arranged to cooperate with a cavity ( 22 ) formed in the second element ( 20 ), the cavity ( 22 ) comprising a complementary inclined wall ( 23 ) configured to forcibly interlock or clip, and assemble the first and second elements ( 10 , 20 ).

2. The back for a watch case according to claim 1 , wherein said braking means act by friction.

3. The back for a watch case according to claim 1 , wherein said braking means include at least one elastic annular element ( 30 ).

4. The back for a watch case according to claim 1 , wherein said at least one annular element ( 30 ) is elastic in a direction parallel to the rotational axis (C) of the second element ( 20 ).

5. The back for a watch case according to claim 1 , wherein said braking means are formed by a ring gasket ( 30 ) made of a compressible material.

6. The back for a watch case according to claim 1 , wherein the first element ( 10 ) and the second element ( 20 ) comprise complementary clipping means.

7. The back for a watch case according to claim 1 , wherein the second element ( 20 ) comprises a pin ( 24 ) arranged such that it engages with an annular groove ( 15 ) formed in the first element ( 10 ).

8. The back for a watch case according to claim 3 , wherein the second element ( 20 ) comprises two elastic annular elements ( 30 ) housed inside first and second annular slots ( 14 , 16 ) facing one another and formed in the first element ( 10 ).

9. The back for a watch case according to claim 8 , wherein said annular slots ( 14 , 16 ) are disposed on either side of the annular groove ( 15 ).

10. The back for a watch case according to claim 8 , wherein the second annular slot ( 16 ) has two levels, a first level forming the bottom and arranged so as to receive an elastic annular element ( 30 ), and a second level arranged so as to receive the edge of the second element ( 20 ).

11. The back for a watch case according to claim 1 , wherein an O-ring ( 31 ) is inserted into an annular groove ( 59 ) made in the bottom of the watch case ( 51 ) in order to guarantee sealing between the back ( 1 ) and said case ( 50 ).

12. A timepiece comprising a back for the watch case according to claim 1 .

Assignees

• Blancpain Sa

Inventors

• Haering Yann
• Jobez Sebastien
• Debaud Nicolas

Classifications

• G04B45/0084 Primary

  Pictures or inscriptions on the case or parts thereof, attaching complete pictures (decoration and manfuacture thereof G04B45/0076; special decorative parts which are attached to the case or other parts G04B47/04) · CPC title

• G04B37/11

  of the back cover of pocket or wrist watches · CPC title

• G04B37/12 Primary

  Cases for special purposes, e.g. watch combined with ring, watch combined with button (watch guards or protectors A45C11/10, A45C11/12; watches combined with cosmetic powder containers A45D33/30 {; domed dial G04B19/10; calibers in which the clockwork is disposed on different planes G04B33/08; means for fixing watches on items of clothing G04B37/1433; cases having means for fixing onto a normal bracelet G04B37/1486; cases giving special affects due to their particular shape G04B45/0069; watches combined with various objects and therefore having a specially shaped case G04B47/00}) · CPC title

• G04B37/0008 Primary

  for pocket watches and wrist watches · CPC title

• G04B19/286

  with locking means to prevent undesired rotations in both directions · CPC title