Abstract: A wall exhaust vent (e.g., for a dryer or other HVAC system) can include a housing defining a vent opening, and one or more bumpers on or at least partially within the housing and configured contact a door of the wall exhaust vent in a closed position. The one or more bumpers can include a bumper body, and a magnet disposed at least partially within the bumper body that is configured to magnetically interact with the door of the wall exhaust vent to bias the door to the closed position.

Abstract: A wall exhaust vent (e.g., for a dryer or other HVAC system) can include a housing defining a vent opening, and one or more bumpers on or at least partially within the housing and configured contact a door of the wall exhaust vent in a closed position. The one or more bumpers can include a bumper body, and a magnet disposed at least partially within the bumper body that is configured to magnetically interact with the door of the wall exhaust vent to bias the door to the closed position.

Abstract: The invention will simplify Plumbing Rough-In measurements for drop to grade on Building sewer systems within residential homes as well as commercial buildings Where allowed. This tool will enable the Plumber to perform residential sewer System calculations for drops within basements, where crawl space is limited. Also, tool will be easy to use on second floor dwellings. Individual Plumber Example usage: If you are working alone and need to drop a sewer (drain line), 20 feet. Example: 3? sewer pipe running 20 feet at ¼ inch per foot drop, would Equal to 5 inches drop. One Plumber can set Drop-Shot Tool at 5 inches drop And get his/her drop at 20 feet. Drop-Shot Tool can be used for pipe sized 2? Thru 4?, and reverse side can be used for ?? drop for pipe bigger than 4 inches. Drop will always comply with Uniform Plumbing Codes and save time, money, And always enable the contractor/Plumber to be in compliance of local, state and Other Plumbing Codes.

Abstract: An arm assembly for gripping a sheet of material including jaws and a sensor assembly for detecting a change in the thickness of the material gripped between the jaws. A sensor is mounted to the side of the arm and a lever is operatively associated with the jaws for pivotal movement towards and away from the sensor in response to a change in the thickness of the material gripped between the jaws. In one embodiment, a magnet is mounted to the tip of the lever and the sensor is a Hall-effect sensor which is responsive to a change in the distance between the sensor and the magnet.