The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 1980
Filed:
Apr. 26, 1979
Joseph E Murray, Jr, Malden, MA (US);
Other;
Abstract
A smoking pipe having a pipe bowl with a smoke tube extending into a volume of filtering liquid in an enclosed reservoir. The shapes and dimensions of the smoke tube and liquid reservoir are selected in relation to the volume of liquid so that when the pipe is substantially upright, the end of the smoke tube extends into the liquid. A tubular pipe stem and associated valve extend from a reservoir port which is above the liquid top surface when the pipe is substantially upright. The physical characteristics of the smoke tube are related to the physical characteristics and volume of the filtering liquid and the shape and volume of the reservoir, so that when the pipe is inverted and the valve closes the passage through the pipe stem, there is substantially zero net force on a volume of liquid within the smoke tube due to the pressure differential across that volume, surface tensions between the liquid and the tube and gravitational force on that volume.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile