Abstract: A door seal for a room shielded against electromagnetic radiation in which the door leaf is mounted on a door frame and will move between open and closed positions. The door seal is formed of coplanar layered flexible metal sheets. A layer of coplanar seal sheets is attached to the door leaf and arranged end to end around the periphery of the door leaf. A subsequent layer or layers of coplanar sheets are also attached to the door and so arranged over the adjacent layer to cover its seams. The layered sheets on the door leaf are pressed into full contact with the door frame by a conventional seal such as a tubular bladder. The layered sheets are flame sprayed to protect against corrosion and assure a highly conductive surface between layers.

Abstract: A security lock comprising a latch positioned at the edge of a door which is actuated to selectively lock or unlock the door. The security lock includes an optional key-actuated dead bolt which can provide additional security when needed. A mechanism for locking or unlocking the latch comprises a hand-actuated knob positioned on the inside of the door so that when the dead bolt is not in use, the latch mechanism may still be locked or unlocked simply by rotating the knob between two positions. The mechanism for locking the latch is disengaged when the latch is in the locked position. If the latch is in the locked position when the door is opened, when the door is closed the latch is automatically unlocked to prevent a person from accidentally being locked out.

Abstract: The two endless screws (202, 203) and the four gear wheels (207, 209-307, 309) which mesh with the endless screws and with each other in pairs, have inclined teeth in opposite directions at an angle a, while the secondary gear wheels (210, 310) fixed in rotation with two respective ones of the gear wheels (209, 309) have teeth inclined at an angle b such that tan a/tan b=D1/D2, where D1 is the pitch diameter of the gear wheels and D2 is the pitch diameter of the secondary gear wheels. The secondary gear wheels (210, 310) mesh with tertiary gear wheels (213, 313) which are fixed on an intermediate shaft (315) which bears a gear wheel having straight teeth and forming part of an outlet reduction stage.

Abstract: A penetrating mechanical roofing fastening and sealing system for securing a flexible sheet, provided with a plurality of apertures, to the upper surface of a roof via the use of a plurality of spaced penetrating fastening and sealing devices, each of which includes upper and lower retainers, wherein the latter are anchored to the roofing surface and the elastomeric sheet is thereafter spread thereover, with cutting portions on the lower retainers being utilized to produce the sheet apertures, rigid upper retainers overlie and completely cover the apertures and the retainers are clamped together in a sealing relationship with the interposed sheet portion. A method for securing and sealing a flexible sheet to the roofing substrate is also presented.

Abstract: A throttle control assembly for lawnmowers and similar power-operated equipment, such assembly consisting essentially of (1) a mounting member permanently affixed to the flexible casing for the throttle control wire and adapted to be secured to the handle of the power equipment, and (2) an elongated cover that may be easily connected to the end of the control wire and then snapped into operative position over the mounting member. When the parts are so coupled, the cover is readily slidable upon the mounting member (which it conceals and protects) to control engine speed but is securely locked against detachment from that mounting member. A speed indicator formed as an integral part of the mounting member projects through an elongated slot in the cover, and indicia upon the cover aligned with the indicator provide clear and accurate representations of throttle settings.

Abstract: A drainage apparatus for basements includes a conventional block or poured concrete wall supported by a footer having an excavation at its inner side extending to the same level as the lower part of the footer, with an aperture and drain tile positioned in the excavation and extending the length thereof. A cover plate means extends from the drain pipe over to the wall for end support on an inner ledge means on the block wall, whereby a floor section can be laid over the cover plate and drain tile to blend into the remainder of the basement floor.

Abstract: A pivotal mounting plate for a foldable T. V. antenna. The mounting is designed to be mounted on one side, generally the left hand side of the hard shell top of the camper. It is designed to stand vertically erect with the antenna mounted on it unfolded to render it operative. The mounting plate is pivotal to a horizontal position and latched over a stud or bolt in a carrying and inoperative condition. At this time, the antenna is telescoped and retained in a folded position.

Abstract: A protective cover for temporarily enclosing a building or other structure during construction, includes a plurality of plastic or canvas panels which are mounted on cables connected to the structure, in parallel spaced apart vertical rows, by connectors including a rod for insertion through grommets in the edges of the panels, a lever rotatably mounted on one end of the rod for rotation around an axis perpendicular to the longitudinal axis of the rod, so that the rod can be inserted through the grommet and rotated to a locked position, and a C-shaped cable clamp on the other end of the rod, the cable clamp including a web mounting on and projecting perpendicular to the rod on each side thereof, an arm on each end of the web extending towards the other end of the rod and a slot in one side of each arm, the slot being inclined towards the other end of the rod and being sufficiently deep that a cable can be inserted through the slots and retained therein by the rod.

Abstract: A prefabricated panel for a post and sill panelized log wall system comprises vertical mullions having generally parallel first and second side faces and inside and outside faces. Each mullion has a first and second grooves extending lengthwise thereof in the first side face and a third groove extending lengthwise thereof in the second side face. Each mullion further has a recess at its lower end extending up from its lower end and extending toward the outside from its inside face providing a vertical face facing toward the inside and an upper shoulder extending from its inside face. A rigid insulation panel extends between the mullions having its ends sealed and adhered in the first grooves, the insulation panel extending from the top of the prefabricated panel down to and terminating at the level of the shoulders.