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US 5,347,932 AGranted
Shot wad with highly collapsible hinge portion
AssigneeOlin Corporation
InventorsRobert J. Gardner, Morris C. Buenemann, Jr.
Life of this patent
Estimating the term…
Abstract
The invention uses a pair of curved opposed diagonal bars between the wad and cup. The bars (deformable resistance members) buckle in the radial direction and end up basically flat between the wad and cup to give surprisingly and unexpectedly high amounts of collapse (80% or more). This allows the space between wad and cup to be decreased significantly without sacrificing cushioning.
Claims17
An axially collapsible shot wad comprising:
- a first transverse wall;
- a second transverse wall coaxially with and axially spaced from the first transverse wall;
- a first radially deformable radially arched resistance member attached to an opposite edge of each of the transverse walls and extending diagonally between the transverse walls;
- and
- a second radially deformable radially arched resistance member radially spaced from the first resistance member and attached to an opposite edge of each of the transverse walls and extending diagonally between the transverse walls in a direction opposite the first member to form a spaced axially crossing x-shape configuration, said first resistance member and said second resistance member having a generally side by side nested configuration when viewed from a transverse wall.
2 more elements
An axially collapsible shot wad comprising:
- a first transverse wall;
- a second transverse wall coaxial with and axially spaced from the first transverse all;
- a first radially deformable radially arched resistance member attached to an opposite edge of each of the transverse walls and extending diagonally between the transverse walls;
- and
- a second radially deformable radially arched resistance member radially spaced from the first resistance member and attached to an opposite edge of each of the transverse walls and extending diagonally between the transverse walls in a direction opposite the first member to form a spaced axially crossing x-shaped configuration wherein said first resistance member and said second resistance member are a pair of radially nested S-shaped bars.
2 more elements
An axially collapsible shot wad comprising:
- a first transverse wall;
- a second transverse wall coaxially with and axially spaced from the first transverse wall;
- a first radially deformable radially arched resistance member attached to an opposite edge of each of the transverse walls and extending diagonally between the transverse walls;
- and
- a second radially deformable radially arched resistance member radially spaced from the first resistance member and attached to an opposite edge of each of the transverse walls and extending diagonally between the transverse walls in a direction opposite the first member to form a spaced axially crossing x-shaped configuration wherein said first resistance member and said second resistance member are connected at their midpoints by an integral transverse connector.
2 more elements
Dependencies are inferred from the claim text.