Abstract: A catalytic converter muffler has a tubular housing with an inlet and outlet, and a baffle chamber intermediate the length thereof, a generally cylindrical catalytic converter supported in the tubular housing adjacent the inlet and a pair of tubular baffle members are disposed in the baffle chamber. An outlet offset baffle ring closing the inlet end of one of the baffles to block flow of gas thereinto, and an inlet offset baffle element closes the outlet end of the other of the baffles to block flow of gas outwardly to the outlet end of the housing. A power bar is provided in the outlet baffle closely adjacent the outlet end thereof to interrupt the harmonic waves of the base in the outlet baffle. The exhaust gas flows from the catalytic converter into the other baffle and thence through the perforations into the outlet baffle through the perforations in the inlet baffle and through the perforations in the outlet baffle.

Abstract: A muffler has an elongated generally cylindrical casing having inlet and outlet ends, an elongated generally frustroconical baffle in the casing adjacent the inlet end with the smaller diameter portion being spaced from the inlet end. The peripheral wall of the baffle has closely spaced perforations over the major portion of its axial length and is spaced from the shell to provide a chamber thereabout. A generally cylindrical baffle has one end extending over the smaller diameter portion of the frustroconical baffle and has its peripheral wall spaced from the casing to provide a chamber thereabout. The peripheral wall of the cylindrical baffle has closely spaced perforations over most of its length. Exhaust gases enter the frustroconical baffle and exit through the perforations therein, move axially in the casing thereabout, and then pass through the apertures into the cylindrical baffle.

Abstract: A muffler has an elongated generally cylindrical casing having inlet and outlet ends, an elongated generally frustroconical baffle in the casing adjacent the inlet end with the smaller diameter portion being spaced from the inlet end. The peripheral wall of the baffle has closely spaced perforations over the major portion of its axial length and is spaced from the shell to provide a chamber thereabout. A generally cylindrical baffle has one end extending over the smaller diameter portion of the frustroconical baffle and has its peripheral wall spaced from the casing to provide a chamber thereabout. The peripheral wall of the cylindrical baffle has closely spaced perforations over most of its length. Exhaust gases enter the frustroconical baffle and exit through the perforations therein, move axially in the casing thereabout, and then pass through the apertures into the cylindrical baffle.

Abstract: A dispensing device comprises a body having a chamber sized to accommodate a volume of solid halogen source therein. The chamber comprises an open end and a closed end. A number of apertures extend through the body and into the chamber near the closed end. A control member comprises an open end and a closed end separated by a wall. The open end of the control member is rotatably mounted over the closed end of the chamber. Openings extend through the wall and are positioned at locations that correspond to the apertures so that alignment of the openings with respective apertures form dispensement ports. The ports has a degree of closure that can be precisely controlled by rotation of the control member about the body for dispensing the halogen solution to the water. A cap is releasably attached to the open end of the chamber to form an air and water-tight seal therebetween, creating an air head within the body when placed into the water.

Abstract: A filter unit capable of receiving a cartridge-type filter element is provided for use in-line with a suction-type pool cleaning device. The unit has an elongated housing with intake and outlet ports at opposite ends. The intake port may be connected via a hose to a pool cleaning device and the outlet port to a suction port in the pool circulation system. The unit can use a filter cartridge with an element that offers a filtration coarseness somewhere between that of the system filter and a strainer element. The housing may be adapted to receive a strainer basket in place of the filter cartridge and thus serve as a conventional leaf-trap.

Abstract: There is provided a flowmeter comprising a vertically extending inlet chamber having an inlet opening at its lower end, a vertically extending outlet chamber horizontally spaced-apart from the inlet chamber and having an outlet opening at its lower end, a communicating passage between the inlet and outlet chambers along the vertical length of the inlet chamber and a ball disposed in the inlet chamber and afforded slidable vertical movement therein. The flowmeter further comprises coaxially aligned inlet and outlet couplings for connecting the flowmeter to a horizontal fluid line.

Abstract: In chlorinating a swimming pool equipped with a periodically operating pump arranged to circulate water from the pool through a filter assembly and back to the pool, chlorination of the pool water is accomplished by the use of a solid chlorinating material. The chlorinating material is introduced into an openable airtight chamber which has a water inlet to and a water outlet from the chamber at the bottom thereof. To prepare the chamber for insertion of chlorinating material, a valve in a duct to the water inlet is closed and a check valve associated with the outlet prevents backflow of water into the chamber so that before opening the chamber air previously contained in the chamber from a prior loading of chlorinating material expands in the chamber to express water from the chamber through the outlet, thereby providing an essentially dry chamber. The chamber is then opened and additional chlorinating material is placed therein. The chamber is then first closed and the valve to the inlet is opened.

Abstract: A chlorinator is used in a swimming pool system having a filter assembly and a pump for circulating water from the pool through the filter assembly and back to the pool. The chlorinator comprises a housing which defines therein a selectively-openable airtight chamber adapted for receiving therein a quantity of water-soluble dry chlorine material. A water inlet port opens to the chamber essentially at the bottom end thereof, and a separate water outlet port opens from the chamber also essentially at the bottom of the chamber. The inlet port is adapted for connection thereto of an adjustably valved duct by which water to be chlorinated can be applied to the inlet port. A check valve is coupled to the outlet port to prevent water flow through the outlet port to the chamber. The chlorinator is connectible in a pool system in parallel to the filter assembly, for example.