Ventilation – Having inlet airway – Including specific cover or shield for exterior vent opening
Patent
1997-03-31
1998-06-02
Joyce, Harold
Ventilation
Having inlet airway
Including specific cover or shield for exterior vent opening
135 93, 454118, 454276, 454367, F24F 1320
Patent
active
057590982
ABSTRACT:
A one-piece air circulation vent for piercing and maintaining a ventilation opening in a flexible cover or the like. The vent includes a stiff, but resilient body structure which comprises a main panel member generally triangular in plan and defining convergent side edges and an apex facing in the forward direction. The main panel member is arched transversely of the forward direction and has a generally V-shaped slot formed therein including convergent legs generally paralleling the convergent side edges of the panel member. The V-shaped slot defines the main panel into a generally triangular central cutting section and a peripheral retaining section. The side edges of the central section converge toward a sharpened apex inward of the apex of the panel member. The central section with its sharpened apex is slightly deflectable relative to the remainder of the panel member. The rear of the body structure has a louvered rear panel to allow air circulation into and out from underneath the cover.
REFERENCES:
patent: 3013483 (1961-12-01), Knight
patent: 3024717 (1962-03-01), Rozek
patent: 3164078 (1965-01-01), Sheng
patent: 3345932 (1967-10-01), Sauer
patent: 3892169 (1975-07-01), Jarnot
patent: 4184414 (1980-01-01), Jarnot
patent: 4898085 (1990-02-01), Jarnot
patent: 5328405 (1994-07-01), Jarnot
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