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US 8,789,246 B2Granted
Asymmetric butterfly clasp
AssigneeSuunto Oy
InventorsTimo Yliluoma, Jukka Manni, Mikko Sepänniitty
Life of this patent
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Abstract
A clasp according to embodiments of the present invention is particularly well suited to wrist bands of diving watches, specifically metallic link type wrist bands. Such a clasp can be worn in a first closed position during normal usage against a user's bare wrist. The same clasp can then extend so that the same watch and wrist band can be worn by a user over some additional material, such as a dive suit. The extension of the clasp is beneficial as it requires no tools, is simple and reliable.
Claims23
A clasp for a band having a plurality of links comprising;
- an asymmetric member having a first end portion shorter than a second end portion,
- a first arm rotationally connected at a first end to the first end portion of the asymmetric member and rotationally connected at the opposite end to a first link,
- a first means for releasably affixing the first arm to the asymmetric member,
- a second arm rotationally connected at a first end to the second end portion of the asymmetric member and rotationally connected at the opposite end to a second link,
- a second means for releasably affixing the second arm to the asymmetric member which is independent from said first means, and
- wherein the first end portion has two extensions of equal length, the second end portion has two extensions of equal length and wherein the extensions of the first end portion are shorter than those of the second end portion.
3 more elements
A wrist band comprising;
- a first band portion and a second band portion,
- an asymmetric member having a first end portion shorter than a second end portion,
- a first arm rotationally connected at a first end to the first end portion of the asymmetric member and rotationally connected at the opposite end to the first band portion,
- a first means for releasably affixing the first arm to the asymmetric member,
- a second arm rotationally connected at a first end to the second end portion of the asymmetric member and rotationally connected at the opposite end to the second band portion,
- a second means for releasably affixing the second arm to the asymmetric member which is independent from said first means, and
- wherein the first end portion has two extensions of equal length, the second end portion has two extensions of equal length and wherein the extensions of the first end portion are shorter than those of the second end portion.
4 more elements
Dependencies are inferred from the claim text.