Ventilator device

Details Ventilator device Ventilator device

1986-01-10

1987-12-29

Yuen, Henry C.

98 413, 98 32, 98 37, 98 85, F24F 700, G05D 2313

Patent

active

047152680

ABSTRACT:
A ventilator device comprises a casing (2) having one or more openings (3) for passage of ventilation air therethrough, a shutter (7) within the casing and normally held retracted from said one or more openings, first means (15) for urging the shutter to a position to close the one or more openings, and second means (13) actuation of which releases the shutter to cause it to be moved by said first means to close said one or more openings.

REFERENCES:
patent: 1348557 (1920-08-01), Forcier
patent: 2936692 (1960-05-01), White
patent: 2939375 (1960-06-01), Herman
patent: 2974680 (1981-03-01), Kreuttner
patent: 3115082 (1963-12-01), Sanoff
patent: 3283691 (1966-11-01), Reiter
patent: 3368756 (1968-02-01), Edwards
patent: 3426668 (1969-02-01), Hofmeister et al.
patent: 3528359 (1970-09-01), Sand
patent: 3800687 (1974-04-01), Nozawa
patent: 3923096 (1975-12-01), van der Lely
patent: 3951051 (1976-04-01), Dry
patent: 4090437 (1978-05-01), Bogaert
patent: 4290554 (1981-09-01), Hensley
patent: 4328927 (1982-05-01), McSwain
patent: 4407187 (1983-10-01), Horney
patent: 4519539 (1985-05-01), Bussjager et al.

Affiliated with

Also associated with

Rating

Ventilator device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ventilator device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ventilator device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-455834