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US 5,397,274 AGranted
Piston engine or machine
AssigneeFirma Carl Freudenberg
InventorsBernhard Gesenhues, Detlef Cordts
Life of this patent
Estimating the term…
Abstract
A piston engine or machine with a belt drive which is surrounded by a housing, with the housing substantially sealing off the belt drive from the environment and from the piston engine or machine, is provided. The housing may have Helmholtz resonators facing the belt drive.
Claims14
A machine comprising:
- a belt drive;
- and
- a housing surrounding the belt drive, the housing substantially sealing off the belt drive from the environment and the machine, the housing provided internally with at least one Helmholtz resonator.
A housing for a belt drive of a machine wherein the housing substantially seals off the belt drive from the environment and the machine, the housing provided internally with at least one Helmholtz resonator.
Dependencies are inferred from the claim text.