Patent ID: 6959457
Filing Date: 2005-11-01
Classification: E03C,F24F

Abstract:
1. A roof vent ingress prevention device for preventing clogging of a roof vent comprising: a generally tubular base having a circumferential side wall, a lower pipe-engaging section and an upper section having at least two side vents formed therein, said side vents extending through said side wall for venting of gas from within said generally tubular base; said upper section of said generally tubular base being generally conical in shape with a top edge having a greater diameter than a lower edge where said upper section contacts said lower pipe-engaging section; a generally circumferential shoulder formed on an outer face of said circumferential side wall intermediate said lower pipe-engaging section and said upper section of said generally tubular base operative to prevent said generally tubular base from slipping downwards into a roof vent in which it is mounted beyond said lower pipe-engaging section, said shoulder including an angled portion extending at an angle less than forty-five degrees (45°) from vertical, said angled portion extending from and connected to said lower pipe-engaging section; and a vent cap removably mounted on said upper section of said generally tubular base, said vent cap including a plurality of vent openings formed therein for venting of gas from within said generally tubular base.