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US 5,471,931 AGranted
Water resistant shot wad
AssigneeOlin Corporation
InventorRobert J. Gardner
Life of this patent
Estimating the term…
Abstract
A water resistant shotshell has an internal moisture seal to preclude moisture intrusion into the propellant charge. The seal is at least one flexible tapered lip on the plastic shot wad which is compressed against the inside surface of the shotshell tube over the powder charge. The preferred embodiment is a two piece shot wad having a shot cup portion and a wad portion. The wad portion has a central disk portion and a tubular rim terminating in a pair of opposing flexible lips which provide a dual moisture seal.
Claims19
A shotshell wad cup, comprising:
- a cup portion for holding a shot charge having a camming surface at a rear end;
- and
- a wad portion interengaged with said cup portion having a resilient outwardly flared lip extending outwardly therefrom with a flare increasing inflection circumferential line on an inside outwardly flared surface of the wad portion which increases the outward flare of said inside surface of the wad portion and a flored camming surface adjacent to said flared lip;
- the camming surface of said cup portion interengaged with the camming surface of the wad portion whereby when said shotshell wad cup is inserted into a shotshell, said flared lip is forced into increased engagement with an inside surface of the shotshell to provided a seal against moisture intrusion into a propellant charge contained within the shotshell.
1 more element
A shotshell, comprising:
- a tubular plastic case body having a head closing one end;
- a propellant charge;
- a shot load;
- and
- a shot wad having separate cup and wad portions;
- said cup portion containing the shot load and having a camming surface at a rear end;
- and said wad portion overlying the propellant charge and having a resilient outwardly flared lip extending outwardly therefrom with a flare increasing inflection circumferential line on an inside outwardly flared surface of the wad portion which increases the outward flare of said inside surface of the wad portion, said wad portion further containing a flared camming surface adjacent to said flared lip, the camming surface of said cup portion interengaged with the camming surface of the wad portion to force said flared lip into increased engagement with the inside surface of the case body to provide a seal against moisture intrusion into the propellant charge.
4 more elements
Dependencies are inferred from the claim text.