Abstract: A dual-chamber syringe has a plunger within an inner delivery chamber in fluid communication with an ejection port. The deliver chamber is formed within a tubular element axially slidable within a tubular guide. The tubular guide and the syringe outer barrel form an outer reservoir chamber. The outer reservoir chamber is sealed from the delivery chamber while the tubular element is in a first position within the guide. Upon withdrawal of the plunger, frictional contact imparted by the plunger seal causes the tubular element to slide away from sealing engagement with the barrel into a second position within the guide. In the second position of the tubular element, a fluid passageway is opened from the reservoir to the delivery chamber allowing fluid to be drawn into the delivery chamber. A porous seal between the plunger rod and barrel allows air into the reservoir during transfer of fluid to the delivery chamber.

Abstract: An instrument provides a quantitative measurement of an analyte in a gas. It includes a detection cell that provides an indication of an amount of analyte present in the gas, and a valve having a closed position, a sample gas position, and a calibration gas position. There is a calibration gas inlet orifice in communication with a gas outlet through a first flow path including the valve and the detection cell, and a sample gas inlet orifice in communication with the gas outlet through a second flow path including a scrubber, the valve, and the detection cell. Two orifices of different sizes, a sample gas orifice along the second flow path, and a bypass orifice positioned between the sample gas orifice and the gas outlet, prevent a build up of excessive pressure in the instrument when the valve is in the closed position or the calibration gas position.

Abstract: A tool is used to assist in the manual insertion and removal of a needle into a medical device implanted under the skin of a patient. The tool includes an elongated body having a handle section and an enlarged guard section with an elongated slot extending from an edge of the guard section into the guard section, terminating at an internal portion of the guard section. Preferably, the guard section of this tool is transparent, and it has indicia thereon which assist in aligning the tool with the implanted medical device. The guard section may include a depression on its underside which overlies the implanted medical device when the guard is placed in position for accessing or deaccessing the needle.

Abstract: A fountain includes a container having a top with an opening therein, a bottom, and an interior for holding a liquid, such as water. An elongated, hollow support member is positioned within the interior and extending from the opening in the top. This support member has a first end mounted at or near the bottom of the container, a second end terminating a predetermined distance above the opening in the top, and an exterior surface over which liquid flows. A pump positioned within the interior and operably connected to the first end of the support member pumps liquid in the interior into and through the hollow support member to flow out its second end and then along the exterior surface of the support member to return to the interior of the container. A faucet is attached to the second end of the support member in a manner which allows the liquid to flow from the second end.

Abstract: A unitary removable barrier for installation in a cylindrical water line to selectively block the water line to passage of water therethrough. The unitary removable barrier is composed of a single piece body having at least one cylindrical section sized to receive upstream and downstream pipes of the water line. A planar disk is molded with the cylindrical section and is of a circular circumference which completely blocks the water line but which is selectively removable from the cylindrical section thus removing the barrier to the passage of water through the line. Removal of the barrier is facilitated through the use of a piercing device and pull tab which can be actuated from a position outside of the waste line.

Abstract: A utility bar is disclosed comprising a bowed shank, a lever piece and a junction that couples the shank to the lever piece. A chisel may also be coupled to the bowed shank.

Abstract: An ophthalmological device for cutting into a nucleus of a cataract comprises a phaco tip including a body having at a distal end thereof a solid blade with a face edge adapted to be placed in contact with the nucleus. There is no aspiration port in this face edge. An aspiration port in the body is displaced rearward from the face edge by a distance which is greater than the length of the blade. A sleeve fits over the body and has a forward section that terminates in an opening in advance of the aspiration port. The device is used alternately with a standard phaco tip to remove cataracts. A surgical instrument comprises a handpiece including phaco tip having a face edge having aspiration port therein that is adapted to be placed in communication with a source of aspiration. A control unit regulates the application of aspiration to the aspiration port, enabling aspiration at the aspiration port to be discontinued on command.

Abstract: A waterless urinal employs a sealing liquid comprising 4-chloro-3-methylphenol in an amount effective to act as a biocide and a compound selected from the group consisting of (1) branched aliphatic alcohols with C12 to C24 carbon chain lengths, (2) a mix of the branched aliphatic alcohols and linear aliphatic alcohols with C10 to C18 carbon chain lengths, (3) a mix of the branched aliphatic alcohols and linear aliphatic fatty acids with C14 to C18 carbon chain lengths, and (4) a mix of the branched aliphatic alcohols, linear aliphatic alcohols with C10 to C18 carbon chain lengths, and linear aliphatic fatty acids with C14 to C18 carbon chain lengths.

Abstract: A unitary removable barrier for installation in a cylindrical water line to selectively block the water line to passage of water therethrough. The unitary removable barrier is composed of a single piece rubber body having at least one cylindrical section sized to receive upstream and downstream pipes of the water line. A unitary rubber planar disc molded with the cylindrical section is of a circular circumference and which completely blocks the water line but which is selectively removable from the cylindrical section thus removing the barrier to the passage of the water through the line.

Abstract: A pressure sensing device adapted to measure pressure of a fluid includes a body member made of an inert material that does not react chemically with the fluid. A thin wall diaphragm section integral with the body member carries on its exterior surface a sensor that provides a signal proportionate to the pressure of the fluid within body member. The sensor device has an exterior surface with a bridge resistor circuit mounted thereon. The cross-sectional configurations of the sensor device and the thin wall diaphragm section are complimentary so their mating surfaces fit snugly together. A liner member made of an inert material that does not react chemically with the fluid fits within the body member adjacent the first thin wall diaphragm section and includes a second thin wall diaphragm section integral with the liner member.

Abstract: Fences and lattices are formed from a single sheet of corrugated-like plastic material comprising a pair of substantially flat sheets spaced apart by spacers that are in parallel and have the same width to form between the flat sheet a series of parallel channels. The fences include a pair of spaced apart cross supports and a series of pickets that intersect the cross supports. The cross supports and pickets all lie in substantially the same plane. The lattices include a plurality of slats intersecting each other at an angle of 90°. These slats all lie in substantially the same plane and the channels are at an angle of 45° with respect to the longitudinal axis of individual slats.

Abstract: The safety support device of this invention includes a frame having a mounting section with a forward end and a rear end. A pair of forward legs are attached to the forward end of the mounting section and a pair of rear legs are attached to the rear end of the mounting section. Each leg has a distal end to which is attached a roller assembly. Each roller assembly includes a roller member mounted so that with the weight of the user bearing down on the assembly the roller member is prevented from moving. In a second embodiment used to assist injured or elderly person stand erect, the legs are long and arm support members engage the arm pits of the user when the user is being supported by the device.

Abstract: Disclosed are apparatus, kits and methods for cleaning an air conditioning unit having an air conduit defined by at least one wall with a hole therein the allows a cleaner to be introduced between a fan and a heat exchanger of the unit positioned along the conduit. In one embodiment, the apparatus includes a resilient female component that is manually inserted into the hole. The female component has an opening therein that provides access to the conduit between the fan and the heat exchanger. A male component is removably received within the female component and it has a passageway therein that allows the cleaner to flow therethrough into the conduit. A plug is manually inserted into the opening upon removal of the male component. In another embodiment of the apparatus, a one way valve is attached to the wall at a point that allows a cleaner to be introduced between the fan and the heat exchanger of the unit, and a connector attached to a container of cleaner is removably attached to the one way valve.

Abstract: A boxspring of a predetermined width is supported on bed frame including a pair of side rails attached together by at least one pair of cross bars. Each cross bar has two segments with outer ends that overlap. The outer end of one of the two segments has an inwardly extending locking element formed in this outer end, and the outer end of the other segment has a receptacle therein. With the two segments of each pair of cross bars in a overlapping and abutting relationship, the locking elements are positioned at a predetermined location to be received in their corresponding receptacles in the outer end of the opposed other segment so that the distance between the attached side rails is substantially equal to the width of the box spring. One outer end of one cross bar segment having at least one connector member extending therefrom and the other outer end to which said one segment is connected having a slot therein that receives the connector member of said one segment when the segments are connected together.