A hood assembly for opacity monitoring equipment including an opacity monitor fixedly secured to an outside surface of a smokestack or chimney includes a hood for protectably covering the opacity monitor and associated guide. The guide is connectable to the monitor in a stationary relationship therewith and cooperates with the hood for guiding bodily displacement of the hood relative to the monitor along a substantially vertical path between a lowered condition at which the monitor is substantially covered by the hood and an elevated condition at which the monitor is accessible.
申请公布号
US4901568(A)
申请公布日期
1990.02.20
申请号
US19880267810
申请日期
1988.11.07
申请人
INTERNATIONAL CHIMNEY CORPORATION
发明人
STROUP, GREGORY;KRAPF, MICHAEL A.;CARPENTER, ARTHUR L.