Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Reexamination Certificate
2007-10-23
2007-10-23
Safavi, M. (Department: 3673)
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
C411S545000, C428S177000
Reexamination Certificate
active
10457840
ABSTRACT:
Disclosed is a mine roof and rib support system generally including a square bearing plate. A through hole is positioned near a center portion of the square bearing plate. A peripheral section at least partially circumscribes the bearing plate. In between the through hole and the peripheral section is a rib member area. The rib member area may include two rib members with a convex cross-section connected by a substantially linear surface member disposed between the two rib members, two or more concave ribs with a substantially linear surface member disposed between the two rib members, or two substantially linear surfaces connected by a convex rib member. A safety edge surrounds the square bearing plate. The safety edge may be a rolled edge, a looped edge, a folded edge, or another comparable edge. Also disclosed is a method for making the mine roof and rib support system.
REFERENCES:
patent: 1111034 (1914-09-01), Robertson
patent: 1320692 (1919-11-01), Hulse
patent: 1481515 (1924-01-01), Kraft
patent: 3455053 (1969-07-01), Pembor
patent: 3464308 (1969-09-01), Dohmeier
patent: 3588787 (1971-06-01), Bushey et al.
patent: D236428 (1975-08-01), Stewart et al.
patent: 4112693 (1978-09-01), Collin et al.
patent: 4279966 (1981-07-01), Wakana et al.
patent: D263928 (1982-04-01), Dewey
patent: 4371293 (1983-02-01), Wilcox et al.
patent: 4445808 (1984-05-01), Arya
patent: 4498815 (1985-02-01), Dye
patent: 4518282 (1985-05-01), Wilcox et al.
patent: 4520606 (1985-06-01), Francovitch
patent: 4652178 (1987-03-01), Kates et al.
patent: 4747241 (1988-05-01), Whitman
patent: 4751802 (1988-06-01), Whitman
patent: 4780039 (1988-10-01), Hartman
patent: 4894970 (1990-01-01), Lebraut
patent: D310324 (1990-09-01), Bernacchi et al.
patent: 5102275 (1992-04-01), Hulsey
patent: 5139379 (1992-08-01), Hasan et al.
patent: 5445477 (1995-08-01), Calandra, Jr.
patent: 5577609 (1996-11-01), Hexter, Jr.
patent: 5709059 (1998-01-01), Murphy et al.
patent: 5794814 (1998-08-01), Baerenwald
patent: 5803693 (1998-09-01), Choiniere et al.
patent: 5867958 (1999-02-01), Ditka et al.
patent: 5934855 (1999-08-01), Osterle et al.
patent: 6146056 (2000-11-01), Calandra, Jr.
patent: 2003/0039514 (2003-02-01), Tadolini et al.
patent: 29703416 (1997-04-01), None
patent: 2292199 (1996-02-01), None
Cover pages and Table of Contents for the 20thInternational Conference on Ground Control in Mining (Aug. 7-9, 2001); and Tadolini, Stephen C. and Dolinar, Dennis R., “Enhanced Surface Control for Roof and Rib Support,” 20thInternational Conference on Ground Control in Mining, pp. 173-179, (Aug. 7-9, 2001).
Brandon Demrey G.
Calandra, Jr. Frank
Eaton Jack R.
Stankus John C.
Stewart Eugene H.
Jennmar Corporation
Safavi M.
The Webb Law Firm
LandOfFree
Square embossed roof and rib plate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Square embossed roof and rib plate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Square embossed roof and rib plate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3841198