Abstract: A vent enabling passage of air through a flexible cover such as those used to cover a boat, automobile, truck payload, stored materials at industrial sites, retail outlet outlets and the like. More specifically, the vent is of one piece unitary construction and includes an annular base secured to the flexible cover by adhesive or other conventional securing structure with the base including a central opening aligned with an opening in the flexible cover. The vent further includes a dome shaped louvered cover hingedly connected to the base and oriented in overlying relation to the base with the louvers enabling air passage through the cover and base for circulation of air in relation to the space covered by the flexible cover on which the vent is mounted. A retaining wall extends inwardly and upwardly from the base around the central opening to prevent water from entering the opening.

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.

Abstract: An annular vent assembly is provided for securement over one side of a panel having a vent opening therethrough. The vent assembly is equipped with a readily removable and rotatably supported incident wind scoop as well as alternately usable perforated and imperforate closures capable of enjoying weather tight connections with the vent assembly. Also, the vent assembly includes a semipermanently mounted annular base assembly from which all other components of the vent assembly may be readily removed.

Abstract: A pair of similarly transversely bowed and superposed panel members are secured together and are V-shaped in plan. The apex portion of one panel member disposed to the concave side of the other panel member is sharpened and the panel members are secured together along their base edge portions with the remaining portions of the panel members disposed in slightly spaced apart relation. The opposing surfaces of the spaced apart portions of the panel members include coacting projections for frictionally clampingly engaging the portion of a flexible cover disposed to one side of a slit formed in the cover through which the aforementioned one panel member extends.

Abstract: An annular base having a central opening therein is provided for overlying and support from one side of a cover panel having a ventilation opening therein and with the base supported from the cover panel in at least reasonably good fluid tight sealed engagement with the portion of the cover panel extending about the opening. A cup-shaped cover is removably supported from the base and is somewhat resilient such that remote sidewalls of the cover may be inwardly deflected at the open end of the cover. Predetermined remote portions of the cover sidewall and corresponding remote portions of the base include coacting structure interlockingly engageable with each other upon return of the predetermined wall portions of the cover from inwardly deflected positions.

Abstract: First and second members are provided and include central registered openings formed therethrough. The first and second members are positionable on opposite sides of a panel having a vent opening formed therethrough of a size and shape complementary to and registered with the openings in the first and second members. Connecting structure is connected between the members securing the latter together for frictionally gripping the panel therebetween and the first member defines a tubular member and includes a cup-shaped cover having closed and open ends supported therefrom in position loosely embracing the end of the tubular member remote from the second member.