Portable, oscillating grade determinant apparatus incorporating laser signal receiver
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E01C-019/30
출원번호
US-0003993
(2001-11-02)
발명자
/ 주소
Wrazidlo, Joseph D.
대리인 / 주소
Gugliotta, John D.Martin, P. Jeff
인용정보
피인용 횟수 :
3인용 특허 :
11
초록▼
A portable, oscillating grade determinant apparatus incorporating laser signal receiver is provided for determining proper cement elevation or slope. The apparatus has an electric motor, powered by a rechargeable battery, and actuated by a depressible switch, which turns a metal plate that is unbala
A portable, oscillating grade determinant apparatus incorporating laser signal receiver is provided for determining proper cement elevation or slope. The apparatus has an electric motor, powered by a rechargeable battery, and actuated by a depressible switch, which turns a metal plate that is unbalanced by the removal of a pie-shaped section therefrom. This unbalanced nature produces an oscillating motion which forces a tamping plate down into freshly-poured concrete. A laser receiver receives a laser signal from a separate laser transmitter mounted on a tripod. The laser receiver includes a speaker which generates audible beeps to indicate the concrete is at proper elevation.
대표청구항▼
A portable, oscillating grade determinant apparatus incorporating laser signal receiver is provided for determining proper cement elevation or slope. The apparatus has an electric motor, powered by a rechargeable battery, and actuated by a depressible switch, which turns a metal plate that is unbala
A portable, oscillating grade determinant apparatus incorporating laser signal receiver is provided for determining proper cement elevation or slope. The apparatus has an electric motor, powered by a rechargeable battery, and actuated by a depressible switch, which turns a metal plate that is unbalanced by the removal of a pie-shaped section therefrom. This unbalanced nature produces an oscillating motion which forces a tamping plate down into freshly-poured concrete. A laser receiver receives a laser signal from a separate laser transmitter mounted on a tripod. The laser receiver includes a speaker which generates audible beeps to indicate the concrete is at proper elevation. , 384/478; US-5009436, 19910400, Endo et al., 277/410; US-5011165, 19910400, Cap, 384/133; US-5227686, 19930700, Ogawa; US-5238254, 19930800, Takii et al.; US-5593164, 19970100, Mraz et al.; US-5876037, 19990300, Ishizaki et al.; US-5876126, 19990300, Marshall et al.
Allen J. Dewayne (Paragould AR) Luebke Ralph (Memphis TN) Leyes Thomas J. (Oakville CAX), Laser operated automatic grade control system for concrete finishing.
Quenzi Philip J. (Wheeler Rd. Atlantic Mine MI) Somero David W. (Wheeler Rd. New Ipswich NH 03071) Somero Paul J. (New Ipswich NH 03071), Screeding apparatus and method.
Somero David W. (Wheeler Rd. New Ipswich NH 03071) Somero Paul J. (Gibbs Rd. New Ipswich NH 03071) Quenzi Philip J. (Atlantic Mine MI), Screeding apparatus and method.
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