Smoking pipe

• US 4,020,853 A
• Filed: 10/02/1975
• Issued: 05/03/1977
• Est. Priority Date: 10/02/1975
• Status: Expired due to Term

• Current Assignee: Richard T. Nuttall
• Original Assignee: Richard T. Nuttall
• Inventors: Nuttall, Richard T.
• Primary Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US05/619,015
• Time in Patent Office: 579 Days
• Field of Search: 131/196, 131/195, 131/199, 131/226
• US Class Current: 131/195
• CPC Class Codes: A24F 1/22 with arrangements for cooling by air, e.g. pipes with double walls
• CPC Class Codes: A24F 1/32 Selection of materials for pipes
• CPC Class Codes: A24F 5/06 with insets of clay or the like

Abstract

A smoking pipe which can be made of an artistically ornamented ceramic such as porcelain wherein means is provided for maintaining the outer wall at a sufficiently low temperature to permit comfortable handling by the smoker, there being spaced inner and outer bowls with provision for air circulation inwardly and upwardly between the bowls by convection, the convection flow not only serving as a cooling medium but also as an upward draft to assist in keeping the tobacco in a burning condition even while the smoker is not drawing air and smoke through the inner bowl and stem of the pipe. The inner bowl is removably held and sealed about its bottom by a novel sealing arrangement with a yielding heat resistant material such as silicone rubber which also supports part of the smoke passage means leading to the stem.

Claims

1. In a smoking pipe, a body having a bowl portion and a stem portion,

the bowl portion having a side wall, an open top and a bottom,

the side wall having air inlet means about the upper portion thereof,

the lower portion of the side wall being substantially continuous and free of openings,

said bowl bottom having a smoke outlet,

an outer wall spaced about said side wall and bottom and having an air inlet therein engagable by a finger of the user to totally close said side wall air inlet at will,

a flow passage from said smoke outlet to said stem,

and a portion of flow passage comprising a flow barrier between said air inlet means of the side wall and said smoke outlet.

2. The structure in claim 1, and the side wall and outer wall being connected by a closure at their upper edges above said air inlet means.

3. The structure in claim 2, and said closure being continuous and free of openings between the upper edges of the bowl portion and the outer wall.

4. The structure in claim 1, and said air inlet in said outer wall being disposed to provide a supply of ambient air from outside the bowl for flow upwardly between said side walls and said outer wall.

5. The structure in claim 4, and said outer wall comprising a ceramic material.

6. The structure in claim 1, and said side wall air inlet means comprising a plurality of openings extending downwardly from adjacent the top of the bowl portion to a vertically medial portion thereof.

7. The structure in claim 1, and said bowl button, other than said smoke outlet, being closed,

and the smoke outlet being located approximately centrally of the bowl botton.

8. The structure in claim 1, and a shell comprising an outer wall having side portions spaced about said side wall and a bottom portion spaced below the bottom of said bowl portion,

and a socket for said bowl portion having releasable frictional engagement with said bowl portion to removably retain the bowl portion in the shell.

9. The structure in claim 8, and said socket being of silicone rubber and comprising said flow barrier between said air inlet means and said smoke outlet.

10. The structure in claim 9, and said pipe body having a stem extension,

a smoke tube in said stem extension,

and an end of said smoke tube being embedded in said silicone rubber and in flow communication with the smoke outlet in said bowl portion.

11. The structure in claim 8, and said outer wall comprising a ceramic material.

12. The structure in claim 1, and said pipe body outer wall being of ceramic material.

13. The structure in claim 1, and said side wall air inlet being vertically elongated and extending from the upper portion of the side wall downwardly to adjacent the vertical center of the bowl.