Title: Battery hand lamp

Abstract: A battery hand lamp for use where high luminosity is desirable and where a damp or wet environment or water is encountered, as is the case on boats, in fighting fires or in speleology or the like. The battery hand lamp consists of two units, namely a supply unit and a lamp unit. A fluorescent tube is housed in a protection tube provided with a socket fitting into a corresponding opening of the supply unit. A seal is provided at the socket to prevent the entry of water to the electric connectors connecting the lamp unit with the supply unit. One connector has the form of slide contact springs and the other connector has the form of slide contact rings cooperating with said slide contact springs. This permits one to insert the lamp unit into the supply unit by pushing the lamp unit in and at the same time turning it. In a similar way the lamp unit may be detached from the supply unit by pulling and turning the lamp unit out of the supply unit. In this way the friction force excerted by the seal at the socket is easily surmounted and the lamp unit may be positioned in any desired angular position with respect to the supply unit. To permit the lamp to float on water hollow spaces in the lamp unit and in the supply unit may be so dimensioned that the specific weight of the lamp is less than one.

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Inventors: Maurer, Paul Peter (CH-8903 Birmensdorf, CH)

Application Number: 504895
Filing Date: 1974-09-11
Publication_date: 1976-08-31
Assignee:
Primary Class(es): 362/158 362/222
Other Classes:
US Patent Ref:

2760053	Aug, 1956	Choisser	240/11.
2874270	Feb, 1959	Douglass et al.	240/11.
3219811	Nov, 1965	Young	240/10.
3809882	May, 1974	Wetmore	240/10.

Other Refs:
Primary Examiner: Adams, Jr., Russell E.
Assistant Examiner:
Attorney: Griffin, Branigan and Butler