Abstract:
Mobile apparatus, typically in the form of automatic swimming pool cleaners, capable of indicating temperatures (or pressures) of the pool water in which they are deployed are discussed. The indication may, but need not necessarily, occur through change in color of one of more components of the cleaners. Some versions may have floats adapted to provide this color change. These or other versions may include floats that are not spherical in shape as well. Alternatively, temperature (or pressure) indication may be provided by other aspects of a water-circulation system.
Abstract:
Devices for cleaning vessels, especially swimming pools, are discussed. The devices may include a non-linear flow path in a gap surrounding an in-line valve. This non-linearity permits lengths of concentric pipes forming the gap to be decreased without sacrificing operational performance of the devices. Valves forming parts of the cleaning devices may be diaphragms but shaped, sized, reinforced, or configured differently than existing valves and may have collapsible segments whose interior shape resembles an ellipse in transverse cross-section. Co-molding of diaphragms and pipes may occur, and inner and outer cups may be used to fix relative positions of various components of the devices.
Abstract:
Automatic pool cleaners and associated hoses are detailed. Hoses may contract and expand in use and include sections of differing compliancies. Such contractions and expansions may be intensified in more compliant portions and attenuated in less compliant portions. Also discussed are positive locking mechanisms for adjacent hose sections.
Abstract:
Detailed are valves principally useful for automatic swimming pool cleaners. The valves may be made of flexible material and, typically, are generally tubular in shape. Mouths of the valves may be divided into two or more parts, with certain versions having three lobes. These configurations enable larger debris to pass through the valves.
Abstract:
Adaptor assemblies (10) are detailed. Preferably for connecting automatic pool cleaning apparatus to retum lines of swimming pool water-circulation systems, the assemblies (10) utilize spurs (26) that may affirmatively grip, or cut or gouge into, the return lines (P) to retain the adaptors (10) in position. Releasing the adaptors (10) may occur with use of a release line (42) which retracts the spurs (26) when activated. Avoiding release of the spurs (26) through rotation of the assemblies (10) allows rotation for other purposes as, for example, to connect the device to a hose or other apparatus. A bellows (46) or other assembly additionally may be included with the assemblies to facilitate their sealing against walls (S) or other surfaces in which the return lines (P) are embedded.