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3,334,536
11 12
timing ring means being spaced longitudinally away with each other upon movement of said cylinder
from the interior of said pressure head of said piston toward said release position;
toward the release end of said body to permit an ini- and squib means for discharging propulsion gases into
tial stage of releasing movement by said piston be- the pressure end of said cylindrical chamber, and
fore the interior of said pressure head makes driving 5 drive said piston toward said release end, and in se-
engagement with the pressure end of said timing quence, first shearing said shear flange from said
ring means; timing ring means, and displacing said annular nest-
an annular shear flange on the exterior of said timing ing shoulders from unnested to nested position, and
ring means; then telescoping said timing ring towards said lock-
a flange-shearing structure on the interior of said pis- 10 ing ring to produce radial bolt-releasing movement
ton adapted to shear said flange from said timing of said segments.
ring immediately upon the beginning of said release
movement; References Cited
a pair of inwardly projecting annular shoulders on the UNITED STATES PATENTS
interior wall of said piston sleeve; 15 Young et al. __________ 85-33
a pair of outwardly projecting annular shoulders on 1,909,601 5/1933
the exterior of said threaded assembly, said segment 2,737,248 3/1956 Baker-------------- 285-34
shoulders mating with said sleeve shoulders, and 3,053,131 9/1962 Stott ---------------- 85-33
Cator _______________ 285-3
adapted to be held in an abutting position with said 3,169,786 2/1965
threaded segments engaged with said bolt threads, 20 CARL W. TOMLIN, Primary Examiner.
when said piston is in the bolt-engaging position in
the pressure end of said cylindrical chamber, and R. S. BRITTS, Assistant Examiner.
adapted to move outwardly in nesting engagement