U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Humidifier

Patent 4906417 Issued on March 6, 1990. Estimated Expiration Date: Icon_subject May 3, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2847734

2885527

3098926

3319046

3610879

Humidifier blowoff portion
Patent #: 4640804
Issued on: 02/03/1987
Inventor: Mizoguchi

Humidifier provided with a purifier
Patent #: 4724104
Issued on: 02/09/1988
Inventor: Kim

Ultrasonic humidifier
Patent #: 4752422
Issued on: 06/21/1988
Inventor: Uchida ,   et al.

Combined humidifier and fan heater unit Patent #: 4752423
Issued on: 06/21/1988
Inventor: Wong

Inventor

Assignee

Application

No. 348157 filed on 05/03/1989

US Classes:

261/30, Gas inlet128/203.26, Means for heating treating agent, respiratory gas, or mixture thereof261/142, Electric heater392/405With separate heating chamber

Examiners

Primary: Chiesa, Richard L.

Attorney, Agent or Firm

International Class

B01F 003/04

Abstract

A humidifier has a cap which may be lifted off to wash it. The lift off cap is sealed to the humidifier by a labyrinth seal. A vapor well is formed in the top surface of said cap with a steam discharge nozzle directed over the well. The cap, and therefore, the nozzle and vapor well may rotate over a 360° traverse. The nozzle is formed by spaced inclined planes setting at angles in the range of 8°-30° and preferably 18° and 20°, respectively, the angles being taken with respect to the horizontal.

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