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US 6,974,248 B2Granted
Crown for watches and a tool for attaching a screw-in tube for the crown arrangement on a watch case
AssigneePetra Damasko
InventorKonrad Damasko
Life of this patent
Estimating the term…
Abstract
A crown for watches, especially wristwatches or pocket watches, the crown body which is provided on a winding stem is made up of two parts and includes of a first part which forms the grip surface of the crown and a second part. The crown body furthermore has a crown body thread and can be screwed to a penetration which is provided on the watch case for the winding stem.
Claims12
A crown for watches, comprising
- a winding stem,
- a crown body which is provided on the winding stem,
- said crown body comprising a first and a second crown body part,
- said first crown body part forms a gripping surface of the crown body,
- said second crown body part being anchored in a recess of the first crown body part,
- a crown body thread by which the crown body can be threaded to a tube, which is provided on a watch case for the winding stem,
- a first coupling section formed on the crown body by an opening having an inside cross section which differs from a circular shape,
- a second coupling section on the winding stem with an outside cross section which is matched to the inside cross section of the first coupling section,
- the crown body being axially guided on a guide section of the winding stem,
- the first and second coupling sections disengaging by axial displacement of the crown body on said guide section,
- said first crown body part having said crown body thread,
- said first crown body part having said first coupling section,
- said second crown body part being inserted into said recess of the first crown body part from a side facing away from the tube.
10 more elements
A crown for watches, comprising
- a winding stem,
- a crown body which is provided on the winding stem,
- said crown body comprising a first and a second crown body part,
- said first crown body part forms a gripping surface of the crown body,
- said second crown body part being anchored in a recess of the first crown body part,
- a crown body thread by which the crown body can be threaded to a tube, which is provided on a watch case for the winding stem,
- a first coupling section formed on the crown body by an opening having an inside cross section which differs from a circular shape,
- a second coupling section on the winding stem with an outside cross section which is matched to the inside cross section of the first coupling section,
- the crown body being axially guided on a guide section of the winding stem,
- the first and second coupling sections disengaging by axial displacement of the crown body on said guide section,
- said first crown body part having said crown body thread,
- said first crown body part having the first coupling section,
- said second crown body part being inserted into said recess of the first crown body part from a side facing away from the tube,
- a bevel on the first coupling section and/or on the second coupling section, each in a form of a conical surface which surrounds a lengthwise axis of the crown.
11 more elements
Dependencies are inferred from the claim text.