Resources Contact Us Home
Universal shot wad

Image Number 6 for United States Patent #5970878.

The combination of a shot sleeve and a shot cup base form a universal shot wad that precisely fixes an adjustable volume for the shot column of a wide range of shot shell loads. The shot sleeve is a generally tubular member with an open end and a closed end. The inside of the shot sleeve is substantially smooth adjacent to both the open end and the closed end and has a plurality of substantially parallel, inwardly projecting, first ribs circumscribing the inside between the smooth portions.The shot cup base is a second tubular member and also has an open end and a closed end. A plurality of substantially parallel, outwardly protruding, second ribs circumscribe an outside of the shot cup base. The volume of a shot receiving portion is controlled by inserting the shot cup base a desired distance into the shot sleeve such that the two sets of ribs interengage. Apertures formed through the shot cup base cause the sidewall portions of the shot cup base to segment and open outward on expulsion from the muzzle of a shotgun increasing aerodynamic resistance. The increased aerodynamic resistance causes the shot cup base to separate from the shot string minimizing interference of the shot flight pattern by the shot cup base.

  Recently Added Patents
Crowd formation based on wireless context information
Rechargeable battery
Piezoelectric speaker and method of manufacturing the same
Method, apparatus and article for detection of transponder tagged objects, for example during surgery
Cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives
System and method for determining a characterisitic of an object adjacent to a route
  Randomly Featured Patents
Ultrasonic image processing apparatus for constructing three-dimensional image using volume-rendering data and surface-rendering data simultaneously
Automatic icemaker
Handheld electronic device
Multiuser interference cancellation apparatus
Geothermal energy system
Base hydrolysis of pendant amide polymers
Feature design for HMM based Eastern Asian character recognition
Process for preparing epoxy resins having improved physical properties when cured
Substrate bias generators
Process for preparing concentrated imidazoline fabric softener compositions