Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1992-07-02
1994-05-10
Corbin, David H.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
405 94, E02B 740
Patent
active
053102843
ABSTRACT:
The invention is directed to a breakaway prop for a wicket employing a slble and rotatable prop bearing which is secured to the prop by shear pins. Upon application of sufficient force, the shear pins release the prop bearing and allow the wicket to drop without damaging the prop.
REFERENCES:
patent: 1404969 (1922-01-01), Kassebaum
patent: 1556157 (1925-10-01), North
patent: 2750747 (1956-06-01), Aubert
patent: 3718002 (1973-02-01), Aubert
patent: 3775983 (1973-12-01), Aubert
patent: 4352592 (1982-10-01), Aubert
Corbin David H.
Marsh Luther A.
The United States of America as represented by the Secretary of
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