Glass bat
OwnerRonald Boyd Lancaster, Lewis James Danforthinventors
Life of this patent
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Abstract
A device for smoking combustible materials includes a tubular body member constructed entirely of heat-resistant glass material. The device has an internal bore with an integrally formed venturi that separates the bore into a smoke chamber and a loading chamber. A method of forming the device includes providing a tubular body member constructed entirely from a heat-resistant glass material; forming a constricted passage in a bore of the tubular body member by applying heat to a predetermined location on the tubular body member until the glass material expands into the bore at the predetermined location; and smoothing the outer surface of the tubular body member at the predetermined location.
Claims12
A device for smoking combustible materials, comprising:
- a tubular body member constructed entirely from a heat-resistant glass material having a longitudinal axis, a mouth end portion and a loading end portion opposite the mouth end portion;
- a bore extending through the tubular body member between the mouth end portion and the loading end portion coaxial with the longitudinal axis;
- a ring formed unitary with the tubular body member in the bore, the ring separating the bore into a smoke chamber and a loading chamber that are coaxial with the longitudinal axis, the ring defining a constricted passage between the smoke chamber and loading chamber.
A device for smoking combustible materials, comprising:
- a tubular body member constructed entirely from a heat-resistant glass material, the tubular body member having a mouth end portion and a loading end portion opposite the mouth end portion;
- a bore extending through the tubular body member between the mouth end portion and the loading end portion;
- a venturi formed unitary with the tubular body member in the bore, the venturi separating the bore into a smoke chamber and a loading chamber and defining a constricted passage between the smoke chamber and loading chamber.
Dependencies are inferred from the claim text.