[특허]Method and apparatus for detecting tendon failures within prestressed concrete

Method and apparatus for detecting tendon failures within prestressed concrete 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-003/00
출원번호	US-0116034 (1998-07-15)
발명자 / 주소	Reigstad Gordon H. Reigstad Hanley S.
출원인 / 주소	Tech Research, Inc.
대리인 / 주소	Merchant & Gould P.C.
인용정보	피인용 횟수 : 12 인용 특허 : 8

초록 ▼

A nondestructive detection apparatus for detecting tendon failures in a prestressed concrete slab. The detection apparatus includes a cart adapted to be moved over the prestressed concrete slab. A metal sensor and a distance meter are connected to the cart. As the cart is moved over the slab, the metal sensor takes readings of a length of tendon and the distance meter measures the distance traversed by the cart. The detection apparatus also includes a controller that interfaces with the metal sensor and the distance meter. The controller is constructed and arranged to sample the readings generated by the metal sensor at predetermined distance intervals traversed by the cart.

대표청구항 ▼

[ What is claimed is as follows:] [1.] A nondestructive detection apparatus for detecting failures within a length of tendon in a reinforced concrete slab, the detection apparatus comprising:a vehicle adapted to be moved along the concrete slab;a main sensing mechanism connected to the vehicle for taking readings of the tendon as the vehicle is moved along the concrete slab;a distance instrument connected to the vehicle for measuring a distance traversed by the vehicle as the vehicle is moved along the concrete slab;a controller that interfaces with the main sensing mechanism and the distance instrument, the controller being constructed and arranged to sample the readings as the vehicle is moved along the slab; anda lead sensing arrangement positioned ahead of the main sensing mechanism for generating data representative of a lateral position of the tendon.

이 특허에 인용된 특허 (8)

Reigstad Gordon H. (North St. Paul MN) Breivik A. Norris (Forest Lake MN) Reigstad Hanley S. (Sunburg MN), Anchor apparatus for a tendon in prestressed concrete slab.
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Reigstad Gordon H. (North St. Paul MN) Breivik A. Norris (Forest Lake MN) Reigstad Hanley S. (Sunburg MN), Anchor apparatus for a tendon in prestressed concrete slab.
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Schweitzer David P. (North Canton OH) Grimes ; Sr. James A. (Akron OH), Apparatus and method for monitoring condition of objects.
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Kousek Heinz (Feldkirch ATX) Nipp Hansjrg (Mauren LIX) Noser Otto (Vaduz LIX) Ganahl Otmar (Blons ATX) Leemann Hans (Ruggell LIX), Apparatus for determining location of an element of magnetizable material in a construction structure.
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Kohlert Erich (Erlangen DEX) Wirxel Otto (Essen DEX), Instrument holder and method for inspection of a dynamo-electric machine in a gap between a stator and a rotor and dynam.
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Saunderson David H. (Wantage GB2), Method and apparatus for magnetic discontinuity detection in a specimen of magnetizable material.
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Reigstad Gordon H. (North St. Paul MN) Breivik A. Norris (South St. Paul MN) Reigstad Hanley S. (Sunburg MN), Method for installing or replacing tendons in prestressed concrete slabs.
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Woodcock Michael W. (Laurel MD) Holt Richard J. (Westborough MA), Method for the non-destructive evaluation of prestressed concrete structures.
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이 특허를 인용한 특허 (12)

Costley, R. Daniel; Henderson, Mark E.; Dion, Gary N., Acoustic inspection of structures.
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Juedes, Brian M.; Toone, Bryan D.; Meeker, Erik, Apparatus and method for reinforcing concrete using rebar supports.
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Hansjorg Nipp LI, Apparatus for marking a surface indicating elements located inwardly of the surface.
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Schmitzer,Harald; W��rsch,Christoph, Handheld scanning subsurface detector.
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Krapf, Reiner; Mahler, Michael; Wieland, Christoph; Hoffmann, Ulli, Locating device.
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Campbell, Robert, Method and apparatus for providing a visual indication of the tension applied to a tendon of a post-tension system.
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Uchima, Mitsuaki; Kurosu, Hideaki; Maeda, Chikakuni; Yamagami, Tetsuji; Tsukamoto, Shigeaki, Method for detecting damage to a deck of a bridge.
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Parker, David H.; Payne, John M., Methods for measuring and modeling the process of prestressing concrete during tensioning/detensioning based on electronic distance measurements.
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Watters, David G.; Huestis, David L.; Bahr, Alfred J.; Priyantha, Namal; Jayaweeera, Palitha, Sensor devices for structural health monitoring.
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Watters,David G.; Huestis,David L.; Bahr,Alfred J.; Priyantha,Namal; Jayaweera,Palitha, Sensor devices for structural health monitoring.
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Hirose, Masayuki, Ultrasonic detection apparatus and ultrasonic detection method employing the same.
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Hirose, Masayuki, Ultrasonic detector and method for ultrasonic detection.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Method and apparatus for detecting tendon failures within prestressed concrete 원문보기