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US 5,704,347 AGranted
Breathing valve
AssigneeDragerwerik Aktiengesellschaft
InventorJoachim Schlobohm
Life of this patent
Estimating the term…
Abstract
A breathing valve with a valve disk lying on a valve crater and with a valve spring, which is in contact with the valve disk with a first spring portion and with a support surface with a second spring portion. The valve spring is designed as a valve spring that can be spread open against the support surface, and the support surface is designed as a wedge-shaped spreading surface engaging the second spring portion in the area of contact with the second spring portion.
Claims20
A breathing valve, comprising:
- a valve disk;
- a valve crater, said valve disk lying on said valve crater;
- a support surface;
- a valve spring in contact with said valve disk with a first spring end and in contact with said support surface with a second spring end, said valve spring being spread against said support surface, said support surface defining a spreading surface engaging said second spring end in the area of contact with said second spring end;
- and
- friction means positioned in said second spring portion and in said support surface for creating a specific coefficient of friction that reduces vibration of said valve disk when a user of the breathing valve expirates through the breathing valve.
3 more elements
A breathing valve, comprising:
- a valve disk;
- valve crater means for defining a gas inflow channel and having an annular valve seat, said valve disk lying on said valve seat;
- a support surface connected to said valve crater means;
- a valve spring in contact with said valve disk with a first spring portion and in contact with said support surface with a second spring portion, said valve spring being spread against said support surface, said support surface defining a spreading surface engaging said second spring portion in the area of contact with said second spring end;
- and
- friction means positioned in said second spring portion and in said support surface for creating a specific coefficient of friction that reduces vibration of said valve disk when a user of the breathing valve expirates through the breathing valve.
3 more elements
A breathing valve, comprising:
- a valve disk;
- valve crater means for defining a gas inflow channel and having an annular valve seat, said valve disk lying on said valve seat;
- a support surface connected to said valve crater means;
- a valve spring having a first spring portion in contact with said valve disk, said valve spring having a second spring portion in contact with said support surface, said valve spring biasing said valve disk against said valve seat, said support surface having a shape for spreading said second spring portion when said valve disk moves away from said valve seat;
- friction means at said second spring portion and at said support surface for creating a specific coefficient of friction that reduces vibration of said valve disk when an operator of the breathing valve expirates through the breathing valve.
2 more elements
Dependencies are inferred from the claim text.