Buoyant instrument case and holder

Claim 1

A water-tight, buoyant instrument case to enclose one of a variety of selected instruments employing crown or plunger-type controls, such as timers, comprising: a water-tight housing consisting of two sections, a first section being a chamber closed at one end by a lens sealed thereto, and a second section being a closure, such as a cap, wherein said second section is releasably engaged to and sealed with said first section, such as by threadable means, for purposes of instrument installation and removal; said first section having a chamber to receive a selected one of the instruments with plunger-type controls; and wherein, the combined displacement volume of said first and second sections is sufficient to offset the weight of case and instrument and provide positive buoyancy therefor, in order to insure flotation thereof, when said case with instrument enclosed is immersed in water; flexible sealing means compressed between said first and second sections to form a water-tight enclosure when said two sections are engaged; a plunger-type control in said instrument, said instrument supported by a removable support segment, mounted near the middle portion of said first section, said instrument being viewed through said lens which is made a part of said first section; at least one aperture near the middle portion of said first section for access to instrument controls through said one of the apertures, thereby providing means for instrument actuation by manual depression of said plunger-type control; elastic band sealing means, consisting of a flat, flexible band elastically stretched to fit peripherally over the outer surface of said first section, thereby providing resilient sealing means for said one of the apertures and permitting actuation of said instrument control through said aperture by manual depression of said control with said flexible seal; mounting means, such as trunnions, affixed to said case for use in coupling to a mounting bracket or cord carrying means.