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US 5,211,472 AGranted
Electric lamp and dismantling tool for same
AssigneeU.S. Philips Corporation
InventorsWinand H. A. M. Friederichs, Nicasius; G. T. Van Gennip
Life of this patent
Estimating the term…
Abstract
The electric lamp has a lamp vessel (1), which is secured to a cylindrical collar (20). A mounting member (40) is rotatably coupled to the collar (20), in that an end portion (41) thereof which is provided with a groove (42) projects into the collar (20) and in that the collar has hooks (21) gripping into the groove (42). The groove (42) has widened and deepened portions (42') extending to outside the collar (20), giving a special tool access to the hooks (21) to disengage them from the groove (42).
Claims20
An electric lamp comprising
- a lamp vessel (1) which is sealed in a vacuumtight manner and comprises an end portion (2),
- a light source (9) in the lamp vessel,
- a cylindrical collar (20) at the end portion,
- a mounting member (40) for fastening the lamp to a support, a plurality of hooks (21) keeping the collar (20) coupled to the mounting member (40), characterized in that
- the mounting member (40) has an end portion (41) which projects rotatably into the collar (20),
- the collar has the hooks (21) at an inner surface (22) thereof which grip into a groove (42) in an outer surface (43) of the mounting member (40), and
- there is clearance between the inner surface (22) of the collar (20) and the outer surface (43) of the mounting member (40) between the hooks (21).
4 more elements
Dependencies are inferred from the claim text.