Pipe joints or couplings – Convertible
Reexamination Certificate
2001-11-16
2003-09-02
Browne, Lynne H. (Department: 3679)
Pipe joints or couplings
Convertible
C285S093000, C285S148230, C285S334100, C073S049100, C073S049500
Reexamination Certificate
active
06612618
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
REFERENCE TO A MICROFICHE APPENDIX
Not Applicable
BACKGROUND OF THE INVENTION
Pertains to pipe line pressure testing for the Plumbing and Gas Industry.
BRIEF SUMMARY OF THE INVENTION
Pressure testing pipelines always required the plumber or gasman to make up test devices on the job. To create these devices always required an assortment of fittings and nipples, depending on the system the plumber or gasman is working on. The All-Purpose Pressure Test Kit, with included attachments, can be screwed on to any size male pipe thread ranging from ½″ to 2″. The entire set of sizes includes ½″, ¾″, 1″, 1¼″, 1½″, and 2″. This will allow the plumber or gasman to save a considerable amount of time and money.
REFERENCES:
patent: 994441 (1911-06-01), Burke
patent: 1598017 (1926-08-01), Scanlon et al.
patent: 1804290 (1931-05-01), Tschappat
patent: 2954041 (1960-09-01), Gasche et al.
patent: 2956737 (1960-10-01), Hager
patent: 3169562 (1965-02-01), Gogel
patent: 3331238 (1967-07-01), Kost et al.
patent: 3598157 (1971-08-01), Farr
patent: 4266813 (1981-05-01), Oliver
patent: 4712812 (1987-12-01), Weir, III
patent: 5983706 (1999-11-01), Marks et al.
Bochna David E.
Browne Lynne H.
Calfee Halter & Griswold
Szabo Paul E.
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