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US 4,391,781 AGranted
Electrically heated vapor dispenser
AssigneeS. C. Johnson & Son, Inc.
InventorKlaas J. van Lit
Life of this patent
Estimating the term…
Abstract
A device for dispensing thermally volatilizable substances of the type having a heating surface against which is placed a mat which is impregnated with a volatilizable substance. A clamp arm, which is biased toward the heating surface, presses the mat against such surface, and a lever, which is depressible, when depressed engages the clamp arm and moves it away from the heating surface, thereby releasing the mat to facilitate replacement thereof.
Claims8
A device for dispensing a thermally volatilizable substance, comprising:
- a housing;
- a heater secured within the housing and having a heating surface forming a support for a replaceable mat containing the volatilizable substance;
- said housing defining a window over the heating surface and an access opening adjacent to one end of the heating surface for removal and/or insertion or replaceable mats;
- a clamp arm secured to the housing, extending over the window, and terminating in a free end and having means biasing said clamp arm towards the heating surface to press a mat thereagainst;
- and
- depressible lever secured to the housing and upon depression engageable with the free end of said clamp arm to move the clamp arm away from the heating surface, thereby to release a mat to facilitate removal thereof through said access opening.
3 more elements
Dependencies are inferred from the claim text.