Swimming pool alarm

Claim 2

A free-floating housing for use with a swimming pool alarm device, comprising: a housing formed by top and bottom concave sections peripherally interconnected in confronting relation to provide an internal chamber; a plurality of openings formed in a central area portion of said top section; an upstanding cylindrical chimney surrounding said openings; and a shielding cap secured to the upper end of said chimney.

Claim 3

A housing according to claim 1, in which: said chimney is longitudinally flared from its lower end to its upper end.

Claim 4

A housing according to claim 1, in which: said cap is of conical configuration and has a peripheral margin extending outwardly beyond the periphery of the adjacent end of the chimney.

Claim 5

A housing according to claim 1, in which: the upper end of said chimney is formed with circumferentially spaced end edge cutout portions to provide communicating passages between the interior and exterior of the chimney.

Claim 6

A housing according to claim 1, in which: said top and bottom sections are formed with slip fitting peripheral flanges.

Claim 7

A housing according to claim 1, which includes: a platform within said chamber; and post means for supporting said platform in an elevated position comprising: a plurality of sleeve members; and threaded retaining members respectively extending through the platform and sleeve members and threadedly engaged with nuts affixed to a bottom wall of the bottom section of the housing.

Claim 8

A housing according to claim 1, which includes: a platform within said chamber; and post means for supporting said platform in an elevated position, comprising: a plurality of spacers respectively including an internally threaded member affixed to a bottom wall of the bottom section of the housing; and retaining screws respectively extending through the platform and having threaded engagement with the threads of said affixed member.

Claim 9

A swimming pool alarm, comprising: (a) a hollow float adapted to float on the pool surface, comprising: a two-part housing composed of a bottom section and a top section having a peripherally sealed connection, and coacting to provide an internal compartment; a chassis board supported in an elevated position above a bottom wall of said bottom section and providing a mounting panel; said top section being provided with a plurality of sound transmitting openings; and means on said top section providing a protective shield over said sound transmitting openings, wherein the protective shield means comprises: an upstanding chimney peripherally surrounding said sound openings, and said chimney at its upper end mounts a shielding cap; (b) means within said float on said mounting panel for generating a control signal in response to the tilting movements of the float including: a trigger circuit including a transistor having an input and output; sensor means connected to said input and being operable in response to the tilting movements of the float to trigger said transistor and produce a control signal at said output; and (c) alarm control means on said mounting panel including: a control circuit including a silicon controlled rectifier having a gating connection coupled to receive said control signal from said output, and upon actuation by said control signal being operative to energize said control circuit; and an alarm device of the audible type on said mounting panel activated in response to the energization of said control circuit.

Claim 10

A swimming pool alarm, comprising: (a) a hollow float adapted to float on the pool surface, comprising: a two-part housing composed of a bottom section and a top section having a peripherally sealed connection, and coacting to provide an internal compartment; a chassis board supported in an elevated position above a bottom wall of said bottom section and providing a mounting panel; said top section being provided with a plurality of sound transmitting openings; and means on said top section providing a protective shield over said sound transmitting openings, wherein the protective shield means comprises: an upstanding chimney peripherally surrounding said sound openings, and said chimney at its upper end mounts a shielding cap; (b) means within said float on said mounting panel for generating a control signal in response to the tilting movements of the float including: a trigger circuit including a transistor having an input and output; sensor means connected to said input and being operable in response to the tilting movements of the float to trigger said transistor and produce a control signal at said output; and (c) alarm control means on said mounting panel including: a control circuit including a silicon controlled rectifier having a gating connection coupled to receive said control signal from said output, and upon actuation by said control signal being operative to energize said control circuit; and an alarm device of the audible type on said mounting panel activated in response to the energization of said control circuit.

Claim 11

A pool alarm according to claim 8, in which: said chimney and shielding cap coact to define a plurality of communicating openings between the interior and exterior of said chimney.