Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Reexamination Certificate
2006-07-04
2006-07-04
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
Reexamination Certificate
active
07069792
ABSTRACT:
Apparatus for locating adhesive failure of sealant joints. Useful for determination of the quality of sealant joints in structures, especially curtain wall buildings. A substantially constant pressure probe is utilized to displace roughly a middle third of a sealant bead that is located along a sealant joint having longitudinal axis and spanning a gap between adjacent substrates, using a predetermined force calibrated to provide a preselected elongation of a particular type of sealant. The testing apparatus has a frame, a first fluid cylinder having an first end wall, a first tubular cylinder wall, a first piston, and a first shaft. The first shaft is response to movement of the first piston. The first shaft has a probe affixed thereto. A second fluid cylinder is provided having an internal pressure equalization chamber defined by a second end wall, a second tubular cylinder wall, a second piston, and a fluid supply port for receiving a substantially constant pressure fluid supply to the internal pressure equalization chamber. Movement of the first piston transfers fluid pressure to the internal pressure equalization chamber of the second piston, thereby maintaining a substantially constant pressure on the first piston, and thus maintaining a substantially constant reaction force on the probe.
REFERENCES:
patent: 4043179 (1977-08-01), Ingle, Jr.
patent: 5078005 (1992-01-01), Krempel et al.
patent: 5127260 (1992-07-01), Robertson
patent: 5315861 (1994-05-01), Egan et al.
patent: 5351562 (1994-10-01), Scott
patent: 5454260 (1995-10-01), Wang
patent: 5705736 (1998-01-01), McCranie
patent: 5744703 (1998-04-01), Krenceski et al.
patent: 5841034 (1998-11-01), Ball
patent: 6513369 (2003-02-01), Chew
patent: 6711938 (2004-03-01), Huff
patent: 2003/0037595 (2003-02-01), Huff
patent: WO 03/012400 (2003-02-01), None
Lin-Act, Cylinder Division (USA), Des Plaines, IL, Stainless Steel Body Air Cylinder Series SR & SRM Catalogue LA 0960 --specification sheet, Series C'85.
Casad Donald F.
Herbert Dale R.
Huff Daniel N.
Davis Octavia
Goodloe, Jr. R. Reams
Lefkowitz Edward
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