Abstract: A frame for concealing the lower surfaces of T-bars surrounding an opening in a suspended ceiling utilizing inverted T-bars can be constructed so as to include tracks on at least one side of the frame and movable clips movably mounted on the tracks. These clips are shaped so as to be capable of fitting around the edges of the T-bars and engaging the upper surfaces of the T-bars in supporting the frame. At least the noted one side of the frame is sufficiently resilient so as to permit this side of the frame to be temporarily deformed in installing the frame so that the clips are hooked over a T-bar.

Abstract: Stress-skin panels can be manufactured by locating the skins of such panels against mold surfaces which are spaced from one another so that spacers separate these mold surfaces along their side edges. A composition capable of setting up so as to form a rigid, porous foam which is bonded to the skins is introduced into the space between the mold surfaces and the spacers through the use of a movable nozzle structure which introduces substantially equal quantities of the composition along a line extending between the spacers. The nozzle structure is moved in the space between the mold surfaces from one end of the space to the other in such a manner that uniform amounts of the composition are placed within the space along the length of the space. When the composition has become rigid the apparatus is disassembled and the panel produced is removed from it.

Abstract: A roof drain for either a sump or a flush installation has a body having a centrally located water collecting section which is capable of being attached to a pipe, a first surface extending around the periphery of the central section, a connecting surface extending upwardly and away from the periphery of the first surface and a second surface extending outwardly around the periphery of the connecting surface. The first and second surfaces are parallel to one another with the second surface serving as the mounting surface for mounting the drain on to a roof. A grate attaches to the body by attaching directly to the second surface for sump functioning, or in conjunction with an insert for flush functioning. For the flush functioning, the insert fits against the connecting surface and the first surface to become located between the grate and the body.

Abstract: A roof vent includes a plate and a housing integrally formed together. An opening in the plate extends upwardly into the hollow interior of the housing. A partition located within the housing divides the interior of the housing into an upper and lower section. The partition includes a hole allowing for fluid flow between the upper and lower sections. A diaphragm lays on the upper surface of the partition over the hole in the partition. The diaphragm prevents fluid movement from the upper section of the interior into the lower section of the interior, but allows for reverse flow of fluid. A diaphragm positioning member is located in the upper section and maintains the diaphragm in its position on the partition over the hole in the partition. The diaphragm positioning member includes at least one opening in it allowing for fluid passage between the partition and the diaphragm and through the opening in the diaphragm positioning means.

Abstract: A drill bit suitable for making holes in glass and ceramic structures has an elongated member with a cutting end and a retaining end with an axis passing through its ends. The portion of the member near the retaining end is formed as a shank which is capable of being suitably held and rotated by a chuck or the like. The shank distal to the retaining end terminates in a shoulder which tapers inwardly toward a pilot element which extends axially from the center of the shoulder coaxial with the shank. The pilot element terminates in a cutting surface with the cutting surface forming the forwardmost portion of the cutting end of the member. A cutting grit is permanently affixed at least to the cutting surface on the pilot element, the shoulder and the portion of the shank immediately adjacent to the shoulder.

Abstract: A toy capable of teaching certain information to a child includes a housing having an information display system located on the housing. Indicia is located on a portion of the information display system and is divided into units of information which are viewable one at a time from the exterior of the housing. A control mechanism is associated with the information display system. One of the members of the control system is capable of assuming a variety of positions on the housing with each of these positions coordinated with one of the units of information on the information display system. A test system is located in association with the control system and has at least a first and a second test element which are movable on the housing. The test elements interact with the control system such that they are capable of interacting either in a first manner or a second manner, which can be utilized to correlate a first and second answer with regard to the unit of information currently displayed.

Abstract: A container for use in growing plants--a flowerpot--can be effectively utilized to hide things or objects such as keys, notes, money and the like so that such things or objects can be retrieved as desired by modifying such container structures so as to include within their bottoms downwardly opening water impervious recesses. A holder or holding structure is preferably utilized in association with the recess in such a flowerpot for the purpose of supporting things or objects above the bottom of the receptacle so that such things or objects will not be damaged by water contacting the bottom of the pot.

Abstract: A game apparatus has a housing which includes a stationary element located on the housing and at least one movable element located on the housing in association with the stationary element. The stationary element includes members dividing the stationary element into a plurality of sections. The movable element includes members dividing the movable element into a plurality of sections, with the plurality of sections on the movable element equal in number to the plurality of sections on the stationary element. The movable element is movable with respect to the stationary element between three positions.

Abstract: A toy has a base with a surface thereon. A portion of the surface is movable with respect to the remainder of the surface. A target is mounted on a pedestal above the surface. A self-propelled object is associated with the surface. The object is of the type having a body section and a pedestal section, with a motor located in the body section which is capable of moving the pedestal section with respect to the body section. The object further includes a hand-shaped member which is capable of locking with a post which projects upwardly from the surface of the base near the movable portion of the surface. A moving member is associated with the movable portion of the surface for moving that portion. The moving member is utilized to move the movable portion of the surface such that when the object is located on that portion as the portion moves then the object is also moved.

Abstract: An obstacle avoidance driving type toy has a housing with a motor located in the housing. The output of the motor is fed to a switch member which, in turn, conducts the output to either a first transfer mechanism or a second transfer mechanism. The first transfer mechanism transfers output of the motor to a moving member which includes an encounter sensor located on it. An object, under the control of the operator of the toy, is maneuvered with respect to the movement of the moving member, and if the maneuvering of the obstacle is not coordinated with the movement of the moving member, the obstacle will encounter the encounter sensor. When so encountered, a signal from the encounter sensor is fed to the switch member, which switches the output of the motor to the second transfer mechanism.

Abstract: The utility of an expansion fastener including an externally threaded shaft having a head shaped so as to be capable of being engaged by a manipulative tool, a generally cylindrical longitudinally split sleeve located around the shaft, a nut threaded on the shaft, the sleeve and the nut including coacting surfaces capable of expanding the sleeve as the nut is moved on the shaft can be improved by utilizing coacting structures on the end of the sleeve remote from the head and on the nut for preventing relative rotation between the sleeve and the nut as the shaft is turned. Preferably the sleeve is twisted slightly in a spiral-like manner so that an end of the sleeve serves as one of the coacting structures which engages an adjacent ridged or other not smooth surface of the nut serving as the other coacting structure.

Abstract: A series of toys having unique motions are activated by a fluid propelled propulsion device. The propulsion device includes a housing with a cylinder located thereon. A pressurized fluid reservoir connects to the cylinder via a valve. The valve has provisions for introducing pressurized fluid into the cylinder and exhausting pressurized fluid out of the cylinder. A piston is located in the cylinder and in response to introduction of pressurized fluid into the cylinder, moves in a power stroke. This is followed by an exhaust stroke wherein the piston moves in the opposite direction. A piston output member is associated with the piston and extends out of the cylinder. The piston output member moves linearly in response to movement of the piston in its power and exhaust strokes. A connecting mechanism connects the piston output member and the valve. The connecting mechanism includes a first movable member and a second movable member and a biasing member.

Abstract: A small compact stove capable of burning a variety of carbonaceous fuels has a base and located on the base is a vertically oriented cylindrical wall. The wall is formed of a heat conducting material and has open bottom and top ends. The interior surface of a portion of the wall forms a combustion chamber. A grate is located within the wall at the bottom end of the combustion chamber. The primary air chamber is located at the open bottom end of the wall and primary air is conducted through it and then up through the grate into the combustion chamber. A secondary air chamber surrounds at least a portion of the wall such that the wall forms one of the surfaces of the secondary air chamber. The wall includes a plurality of air passageways between the secondary air chamber and the combustion chamber such that air can flow within the secondary air chamber in contact with the exterior surface of the wall and be heated by heat conducted through the wall from the combustion chamber.