Patent ID: 8845405
Filing Date: 2014-09-30
Classification: F24F

Abstract:
1. A guard for blocking passage through the guard to a vent, the guard comprising: an enclosure having a plurality of sides, including: a rear side with an opening to provide access to the vent, the rear side configured for being positioned with the vent at the rear side; respective opposite lateral sides extending forwardly from the rear side; a front side extending between the lateral sides and located opposite and spaced away from the rear side; a bottom side between the lateral sides and between the rear and front sides; and a top side spaced above the bottom side and extending between the lateral sides and between the rear and front sides; each lateral side and the front side being comprised of a plurality of upstanding bars extending from the bottom side of the enclosure toward the top side of the enclosure, and without any cross bars extending across each respective upstanding bar of the lateral sides and the front side intermediate the bottom side and the top sides of the enclosure, each of the upstanding bars on the lateral sides and the front side being selectively spaced apart from adjacent bars a distance selected for blocking passage of a bird between adjacent bars; the bottom side comprising a plurality of bottom side bars of bars each extending from the rear side to the front side of the enclosure, the bottom side bars being spaced apart a distance selected so as to prevent passage of a bird between the bottom side bars, the bottom side of the guard not having cross bars extending across the bottom side bars intermediate the front and rear sides of the enclosure wherein the bottom side bars are oriented to extend from the rear side to the front side of the enclosure and are angled to be spaced apart a greater distance toward the rear side of the enclosure and a shorter distance toward the front side of the enclosure.