Obturator sealing means for a split wedge/breechblock gun
First Claim
Patent Images
1. Obturator for a split wedge breechblock gun tube which comprises:
- active tube insert means for pressure sealing a gun tube chamber after propellant ignition;
polymer means operatively positioned against said active tube insert means for providing a residue-tolerant polymer sealing surface between said active tube insert means and said split wedge breechblock;
metal ring means for retaining said polymer means in said active tube insert means;
lip sealing means for providing a seal between said split wedge breechblock and said active tube insert means;
face sealing means for providing a seal between said split wedge breechblock and said active tube insert means;
wedge ring sealing means operatively positioned intermediate a forward end of said active tube means and said gun tube for providing an inbore seal between said gun tube and said active tube insert means; and
metal "c" ring seal means in juxtaposition with said wedge ring seal means, said active tube insert means and said gun tube, said metal "c" ring seal means when it becomes compressed providing an inbore seal between said gun tube and said active tube insert means.
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Accused Products
Abstract
An obturator for guarding the primary sealing surfaces of a step wedge brhblock gun from post-firing residue buildup assures greater survivability of the obturator without the necessity of cleaning after each firing. The device includes an active tube insert for facilitating face seal force multiplication, out of bore lip and face seals, an inbore piston polymer with expanding residue guard, and an out of bore face seal with a residue-tolerant polymer.
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Citations
6 Claims
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1. Obturator for a split wedge breechblock gun tube which comprises:
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active tube insert means for pressure sealing a gun tube chamber after propellant ignition; polymer means operatively positioned against said active tube insert means for providing a residue-tolerant polymer sealing surface between said active tube insert means and said split wedge breechblock; metal ring means for retaining said polymer means in said active tube insert means; lip sealing means for providing a seal between said split wedge breechblock and said active tube insert means; face sealing means for providing a seal between said split wedge breechblock and said active tube insert means; wedge ring sealing means operatively positioned intermediate a forward end of said active tube means and said gun tube for providing an inbore seal between said gun tube and said active tube insert means; and metal "c" ring seal means in juxtaposition with said wedge ring seal means, said active tube insert means and said gun tube, said metal "c" ring seal means when it becomes compressed providing an inbore seal between said gun tube and said active tube insert means. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification