Vent guards

1 . A vent guard, comprising:

a stationary frame; and

a cage hinged to the stationary frame at a hinged portion, wherein the cage is configured to engage to the stationary frame at an engagement structure of the cage to support the cage in a closed position to enclose a vent within the cage, wherein the engagement structure is configured to be slid relative to the stationary frame,

wherein the stationary frame includes a first side and a second side and forms a first sidewall and a second sidewall of the vent guard and wherein the cage forms only a front and a bottom of the vent guard, wherein each of the first side and the second side comprises:

an engagement slot defined therein having an elbow shape and configured to receive the engagement structure of the cage; and

a hinge slot defined therein having a straight shape, and configured to receive the hinge structure.

2 . The vent guard of claim 1 , wherein the hinged portion of the cage is also slidable relative to the stationary frame to allow the entire cage to slide relative to the stationary frame to disengage the cage.

3 . The vent guard of claim 2 , wherein the stationary frame is structured such that the engagement structure of the cage is configured to be freed from the stationary frame by sliding the cage in a first direction, then rotating the cage about the hinged portion.

4 . The vent guard of claim 1 , wherein each engagement slot includes a first slot portion extending substantially vertical and a second slot portion extending substantially forward from the first slot portion to open to a front of each side.

5 . The vent guard of claim 4 , wherein each second slot portion is angled downward from a top of the first slot portion toward the front of each side.

6 . The vent guard of claim 5 , wherein the hinge slot is a single slot that is substantially vertical such that the hinge structure of the cage can slide substantially vertically within the hinge slot as well as rotate within the hinge slot.

7 . The vent guard of claim 6 , wherein each hinge slot is located at a diagonally opposite corner of each side relative to the engagement slot.

8 . The vent guard of claim 7 , wherein each engagement slot is located in an upper front corner of each side and each hinge slot is located in a lower rear corner of each side.

9 . The vent guard of claim 8 , wherein the engagement structure of the cage includes a lateral protrusion for each engagement slot, each lateral protrusion extending laterally from the cage and configured to slide within a respective engagement slot to engage and disengage the cage with the stationary frame.

10 . The vent guard of claim 9 , wherein the engagement structure is a bar attached extending across a width of the cage.

11 . The vent guard of claim 10 , wherein the hinge structure includes a hinge protrusion disposed through each hinge slot that extends both along a hinge axis from each respective side through the respective engagement slot and at an angle relative to the axis along the first side and the second side such that each hinge protrusion prevents lateral removal of the cage from each hinge slot.

12 . The vent guard of claim 11 , wherein the hinge structure is a bar extending across a width of the cage.

13 . The vent guard of claim 12 , wherein the engagement structure is a top front bar attached to a plurality of cage bars, and the hinge structure is a bottom rear bar attached to the plurality of cage bars.

14 . The vent guard of claim 13 , wherein the stationary structure includes a slanted roof connecting the first side and the second side together.