Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2006-04-25
2006-04-25
Hong, John C. (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C029S516000, C029S517000
Reexamination Certificate
active
07032286
ABSTRACT:
A section of heat treated solid steel rod receives a phosphate solution treatment and is inserted into a blind cavity of a first die member within a cold forging press. A punch is forced axially into the rod section in successive steps to cold-forge a first bore and a tubular first end portion of a coupler body. A second end portion of the coupler body is also cold-forged in successive steps after treatments and is either reduced in diameter to receive external threads or is formed with a second bore. Each of the first and second bores receives an end portion of a concrete reinforcing bar after which the tubular end portion of body is compressed or swaged inwardly to secure the body to the reinforcing bar. The second bore may also be machined with internal threads for receiving the external threads on another coupler.
REFERENCES:
patent: 172253 (1876-01-01), Chapman
patent: 1717665 (1929-06-01), Conner
patent: 2789344 (1957-04-01), Karl
patent: 3006983 (1961-10-01), McDurmont
patent: 3056197 (1962-10-01), Lawson
patent: 3079682 (1963-03-01), Bailey
patent: 3101534 (1963-08-01), Longe
patent: 3186209 (1965-06-01), Friedman
patent: 3415552 (1968-12-01), Howlett
patent: 3551999 (1971-01-01), Gutmann
patent: 3638978 (1972-02-01), Guntermann
patent: 4166373 (1979-09-01), Braun
patent: 4241490 (1980-12-01), Edwards
patent: 4416141 (1983-11-01), Nippert
patent: 4423616 (1984-01-01), Pease
patent: 4752151 (1988-06-01), Ashida
patent: 4918969 (1990-04-01), Takeuchi et al.
patent: 5067844 (1991-11-01), Bowmer et al.
patent: 5088311 (1992-02-01), Inoue
patent: 5152118 (1992-10-01), Lancelot
patent: 5399274 (1995-03-01), Marcus
patent: 5664902 (1997-09-01), Holdsworth
patent: 5689882 (1997-11-01), Adachi et al.
patent: 5729952 (1998-03-01), Dahl
patent: 5871403 (1999-02-01), Simmons et al.
patent: 6098436 (2000-08-01), Girardello et al.
patent: 6571452 (2003-06-01), Wang
Barsplice Products, Inc.
Hong John C.
Jacox Meckstroth & Jenkins
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