Emergency pipeline shut-off apparatus
First Claim
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1. An emergency pipeline shut-off apparatus for interposition within a fluid transmitting pipe circuit said apparatus comprising:
- apparatus housing means capable of being positioned into said pipe circuit and for attachment therewith;
resilient plug stopper means capable of being alternatively operated between a retracted-open position and an extended-closed position to interrupt the passage of said fluid;
stopper control means operatively attached to a rear side of said plug stopper means and positioned within said housing for controlling the alternative retraction and extension of said stopper;
remote stopper activation means attached to and operatively activating said control means to in turn control said stopper means from a position remote to said apparatus housing means,said remote stopper activation means comprising rotatable cable activation means,said rotatable cable activation means comprising a cable in a cable housing with a proximate and a remote end, and means for imparting rotation to said cable, as well as means for attaching the proximate end of said cable to said stopper control means in said apparatus housing,said rotation imparted to said cable rotating said control means to in turn alternatively extend or withdraw said plug stopper means; and
stopper locking means for automatically and fixedly restraining said plug stopper means after positioning into said extended-closed position thereby precluding inadvertent retraction of said plug stopper means.
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Abstract
An emergency pipeline shut-off apparatus for interpositioning within a fluid transmitting pipe circuit in which a resilient plug stopper is capable of alternative placement between an open and closed position to allow or block passage of the fluid respectively. Remote stopper activation elements cooperate with control members and locking features to position the stopper in the desired open or closed configuration followed by the automatic locking of the stopper in that particular position. The remote stopper control device can be expressly reactivated to be withdrawn from its locked position.
26 Citations
9 Claims
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1. An emergency pipeline shut-off apparatus for interposition within a fluid transmitting pipe circuit said apparatus comprising:
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apparatus housing means capable of being positioned into said pipe circuit and for attachment therewith; resilient plug stopper means capable of being alternatively operated between a retracted-open position and an extended-closed position to interrupt the passage of said fluid; stopper control means operatively attached to a rear side of said plug stopper means and positioned within said housing for controlling the alternative retraction and extension of said stopper; remote stopper activation means attached to and operatively activating said control means to in turn control said stopper means from a position remote to said apparatus housing means, said remote stopper activation means comprising rotatable cable activation means, said rotatable cable activation means comprising a cable in a cable housing with a proximate and a remote end, and means for imparting rotation to said cable, as well as means for attaching the proximate end of said cable to said stopper control means in said apparatus housing, said rotation imparted to said cable rotating said control means to in turn alternatively extend or withdraw said plug stopper means; and stopper locking means for automatically and fixedly restraining said plug stopper means after positioning into said extended-closed position thereby precluding inadvertent retraction of said plug stopper means. - View Dependent Claims (2, 3, 4, 5)
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6. An emergency pipeline shut-off apparatus for interposition within a fluid transmitting pipe circuit said apparatus comprising:
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apparatus housing means capable of being positioned into said pipe circuit and for attachment therewith; resilient plug stopper means capable of being alternatively operated between a retracted-open position and an extended-closed position to interrupt the passage of said fluid; stopper control means operatively attached to a rear side of said plug stopper means and positioned within said housing for controlling the alternative retraction and extension of said stopper; remote stopper activation means attached to and operatively activating said control means to in turn control said stopper means from a position remote to said apparatus housing means; said remote stopper activation means comprising fluid energizing means, said energizing means comprising a fluid circuit operably connected to said stopper control means; a fluid substance capable of being directed under pressure to extend said control means and said stopper in a forward position; said fluid substance pressure being reducible to permit withdrawal of said stopper control means; biasing means for overcoming said reduced fluid substance pressure to withdraw said stopper control means; and stopper locking means for automatically and fixedly restraining said plug stopper means after positioning into said extended-closed position thereby precluding inadvertent retraction of said plug stopper means. - View Dependent Claims (7, 8, 9)
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Specification