Low volume precision bellows
AssigneePreciflex SA
InventorLucien Vouillamoz
Life of this patent
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Abstract
A bellows is provided for fluid storage and displacement used in precise fluid indication in a capillary tube. The bellows is made of a housing made of flexible, watertight material. The housing is made up of an upper portion, a lower portion, and an outer accordion formed portion. The accordion formed portion has a length/and is sealingly connected along a periphery between the upper and lower portions. At least one entry/exit port is formed on at least one of the portions thereof. At least one of the upper and lower portions extends from a periphery of the accordion formed portion substantially within the housing so as to reduce the storage volume.
Claims17
A wrist watch comprising:
- a. a face on which time is indicated via a transparent capillary tube filled with a liquid;
- b. a housing to which the face is attached, wherein further at least two bellows are enclosed in the housing, the bellows comprising:
- a bellows housing for storing the liquid in a storage volume contained therein, the bellows housing made of a flexible, watertight-material and comprising:
- (i) an upper portion,
- (ii) a lower portion,
- (iii) an outer accordion formed portion having a length l and sealed seam sealingly connecting along upper and lower peripheries between the upper and lower portions, respectively, and
- (iv) at least one entry/exit port formed on at least one of the said portions thereof,
- wherein at least one of the upper and lower portions extends from a periphery of the accordion formed portion substantially within the housing so as to reduce the storage volume contained in the bellows housing;
- and
- c. a wristband.
Dependencies are inferred from the claim text.