Device for arranging the measurement of pressure in a wristop instrument
AssigneeSuunto Oy
InventorsHenrik Palin, Erik Lindman
Life of this patent
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Abstract
A device for the measurement of external pressure in a wristop instrument, such as a sports computer, a diving computer, a wristwatch, or the like, which includes an instrument body,—at least one watertight space disposed inside the instrument body, and at least one circuit board situated and a pressure sensor disposed in the watertight space. A flow path extends through the instrument body to the watertight space and this flow path is closed by a membrane, which is permeable by a gas, but not by water, and which closes the flow path in a watertight manner.
Claims14
A device for measuring pressure in a wristop instrument, which comprises
- an instrument body which defines at least one watertight space therein,
- at least one circuit board disposed in the watertight space,
- at least one flow path which extends through the instrument body for communication with the watertight space,
- at least one membrane which watertightly closes the flow path said membrane being permeable to gas, but not by water, and
- a pressure sensor disposed in the same watertight space as that of the at least one circuit board.
A watertight electronic device which comprises
- a housing which defines a watertight chamber,
- electronic components of the electronic device disposed on the watertight chambers,
- a pressure sensor disposed in the watertight chamber,
- a flow path disposed in the housing for providing communication between housing and the environment outside the housing, and
- a membrane which watertightly closes the flow path, said membrane being permeable to gas but not permeable to water, whereby the pressure outside the device can be transferred to the pressure sensor inside the device while preventing water from entering the watertight chamber.
Dependencies are inferred from the claim text.