Abstract: A wooden vent cover has fixed vanes with major vane surfaces at angles which enhance the throw and spread of air flow through the vent cover. A vent assembly with a wooden vent cover having optimized vane major surface angles including an air flow regulator in combination with the wooden vent cover. The air flow regulator may be a slidable member or other configuration and may be held in place by couplers.

Abstract: A vent assembly has a vent cover and sliding air flow regulator for controlling the flow of air through the vent cover. Unique couplers may be used to interconnect the air flow regulator and vent cover for relative sliding motion. In addition, actuator mechanisms are used to move the air flow regulator between open and closed positions. A vent assembly for corner applications is also disclosed.

Abstract: A vent assembly has a vent cover and sliding air flow regulator for controlling the flow of air through the vent cover. Plural sets of unique couplers may be used to interconnect the air flow regulator and vent cover for relative sliding motion. Desirably, two such couplers are provided at each end of the assembly with an associated one of such couplers being adjacent to each of the corners of the assembly in the event a rectangular assembly is provided.

Abstract: A wooden vent cover has fixed vanes with major vane surfaces at angles which enhance the throw and spread of air flow through the vent cover. A vent assembly with a wooden vent cover having optimized vane major surface angles including an air flow regulator in combination with the wooden vent cover. The air flow regulator may be a slidable member or other configuration and may be held in place by couplers.

Abstract: A vent assembly has a vent cover and sliding air flow regulator for controlling the flow of air through the vent cover. Plural sets of unique couplers may be used to interconnect the air flow regulator and vent cover for relative sliding motion. Desirably, two such couplers are provided at each end of the assembly with an associated one of such couplers being adjacent to each of the corners of the assembly in the event a rectangular assembly is provided.

Abstract: A vent assembly has a vent cover and sliding air flow regulator for controlling the flow of air through the vent cover. Unique couplers may be used to interconnect the air flow regulator and vent cover for relative sliding motion. In addition, actuator mechanisms are used to move the air flow regulator between open and closed positions. A vent assembly for corner applications is also disclosed.

Abstract: A vent coupler has first and second leg portions and a latch element extending between the leg portions. The coupler may be formed from a single piece of wire and be detachably coupled to a vent damper. The latch element is inserted into a respective air flow slot of a vent cover to engage the vent cover and couple the vent cover to the damper. The coupler may be constructed to permit flexing of the coupler during the insertion process, with the coupler being biased to engage the vent cover when no longer flexed. The vent coupler may snap onto and grip upper and lower edges of an end wall of the damper housing to mount the coupler to the damper. A filter housing may be detachably coupled to the damper housing to support a filter on the opposite side of the damper housing from the vent cover.

Abstract: A vent assembly includes a vent cover which is detachably mounted to a damper housing. Couplers mounted to the damper housing each have a catch portion which is inserted into a respective air flow slot of the vent cover to engage the vent cover and couple these components together. The couplers may be constructed to permit flexing of the couplers during the insertion process, with the couplers being biased to engage the vent cover when no longer flexed. A filter housing may be detachably coupled to the damper housing to support a filter on the opposite side of the damper housing from the vent cover.

Abstract: A lock bolt designed to mount in a door jamb, and designed for use in applications such as penal institutions. The lock bolt has two warped surfaces that are exposed to a closing door. The door contacts the first warped surface along a length of that surface, forcing the lock bolt back into a housing. The two warped surfaces are designed such that the door never contacts the second surface. Therefore, the design allows for greater protrusion and greater width of the lock bolt.