Patent Number: 8,720,220

Title: Air convection warmer with noise reduction filter

Abstract: To reduce the noise level of air convective warmer, the air filter of the warmer is fitted with an air intercept mechanism to disrupt the flow of air that traverses inside the interior cavity of the air filter. By thus disrupting the air flow, the noise that otherwise would have been generated due to a non-interrupted air stream flow is lowered. The air intercept mechanism may be in the form of at least one partition positioned inside the interior cavity of the air filter. Alternatively, double-ended open tubes may be used, so long as the interior cavity of the filter is sealed, with only the tubes providing the passages for air to output from the air filter. Yet a third embodiment of the air reduction filter has an air impermeable material covering at least one portion of the surface area of the filtering material to prevent the inflow air from directly entering into the interior cavity of the air filter through the covered surface area.

Inventors: Pierre; Joseph (Brockton, MA), Starr; Rachel (Randolph, MA), Roome; David G. (Honeoyoe, NY)

Assignee: Smiths Medical ASD, Inc.

International Classification: F25D 19/00 (20060101)

Expiration Date: 5/13/12018