초록 ▼

An external guard for placement over a vent, having front, lateral and bottom sides each formed by a plurality of generally parallel bars or rods spaced apart to block passage of a bird between bars. The bars are shaped and positioned to define a frusto-pyramidal shape for the guard. The rear side o

An external guard for placement over a vent, having front, lateral and bottom sides each formed by a plurality of generally parallel bars or rods spaced apart to block passage of a bird between bars. The bars are shaped and positioned to define a frusto-pyramidal shape for the guard. The rear side of the guard opens toward the vent. The top side of the guard has a cover. There are no cross bars across the bars along the lateral sides, the side front and the bottom side of the guard and none at the intersection of the front and bottom sides of the guard.

대표청구항 ▼

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 s

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; anda 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. 2. The guard of claim 1, wherein the guard has a generally frusto-pyramidal shape including the rear side forming a wider and taller end of the frusto-pyramidal shape and the front side forming a narrower and shorter end of the frusto-pyramidal shape. 3. The guard of claim 2, further comprising a cover over the top side of the enclosure. 4. The guard of claim 3, wherein the cover includes downwardly depending flaps of a height and width to extend down over a top region of the lateral sides of the enclosure. 5. The guard of claim 1, wherein the bars at the front side of the enclosure each have a bottom end and respective ones of the bottom side bars also have a front end, wherein the bottom ends of the bars on the front side meets of the enclosure the front ends of respective one of the bottom side bars, and there is no cross bar across the bars at the meeting of the bars of the front side and the bottom side bars. 6. The guard of claim 4, wherein the bars at the lateral sides of the enclosure each have a bottom end, and a cross bar extends from the rear side to the front side of the enclosure at the bottom ends of the bars at each lateral side of the enclosure. 7. The guard of claim 1, wherein each of the bars is a round bar. 8. The guard of claim 1, wherein each of the bars has an exterior of a non-stick or reduced stickiness material. 9. 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 extending between the lateral sides and extending between the rear and front sides; anda top side spaced above the bottom side and extending between the lateral sides and extending between the rear and front sides;each lateral side and the front side being comprised of a plurality of bars extending across the respective one of the lateral sides and the front side and without any cross bars extending across each respective plurality of the bars on the respective front and lateral sides intermediate ends of the lateral side bars and the front side bars, each of the bars on the lateral sides and the front side being selectively spaced apart from adjacent bars on the respective side of the enclosure a distance selected for blocking passage of a bird between adjacent bars;the bottom side comprising a plurality of bottom side bars each extending across the bottom 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 enclosure not having cross bars extending across the bottom side bars of the enclosure intermediate the ends of the bottom side bars that extend between two others of the 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.