Abstract: Methods and apparatuses are provided for an electrical device that employs a feedthrough including a hermetic seal that seals an interior region of the electrical device. The electrical device includes an electrical contact disposed within the interior region of the electrical device, and a wire terminal that includes an encircled portion that is encircled by the feedthrough, and a first end that electrically connects with said electrical contact. When the electrical device is constructed, the first end of the wire terminal is coated with a conductive metal that is more resistant to oxidation than the wire terminal. The first end of the wire terminal is secured to the electrical contact using a mechanical device such as a crimping connector or a spring connector.

Abstract: A filter retaining apparatus and method for installing a thicker filter in an existing conventional return air duct in a conventional heating and air conditioning system. The filter is commercially available but is thicker than one conventionally used in such systems. A thicker filter provides more efficient air filtration and has a longer life, thus, requires less frequent cleaning or replacement. The retaining apparatus is capable of retaining the thicker filter and is adaptable to the existing return air duct opening without modification of the existing opening or the grill cover. The apparatus has the same length and width dimensions as the existing thin filter and is mounted on the same landing surface. The greater depth of the apparatus extends into the air duct. Thus, from the room interior it is not possible to detect the use of the apparatus. The greater depth of the apparatus retains the thicker commercially available filter.

Abstract: A filter retaining apparatus and method for installing a thicker filter in an existing conventional return air duct in a conventional heating and air conditioning system. The filter is commercially available but is thicker than one conventionally used in such systems. A thicker filter provides more efficient air filtration and has a longer life, thus, requires less frequent cleaning or replacement. The retaining apparatus is capable of retaining the thicker filter and is adaptable to the existing return air duct opening without modification of the existing opening or the grill cover. The apparatus has the same length and width dimensions as the existing thin filter and is mounted on the same landing surface. The greater depth of the apparatus extends into the air duct. Thus, from the room interior it is not possible to detect the use of the apparatus. The greater depth of the apparatus retains the thicker commercially available filter.

Abstract: The opening of a bag is defined by a bag frame which in laid down position allows debris to be directly swept into the bag, and in upright position to allow further expansion of the bag beyond a size withdrawable through the opening. A side panel releasably permits the overfilled bag to be withdrawn from the frame, and also provides abrasion/puncture resistance intermediate the bag and the work surface, allowing the bag and frame to be dragged to a convenient location.

Abstract: A gear reducer which is resistant to axial and radial loads on both the input and output shafts. The reducer comprises a housing, a worm and a worm gear.

Abstract: A recirculating ball slide for supporting heavy loads. The slide includes an oval ball race having a special concave ball track. The balls are retained in the race by means of a housing having a cut-away lower portion to expose the balls for mating engagement with a slide rail which also has a concave ball track.