Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7481167 | High-pressure fixed munition for low-pressure launching system A high-pressure fixed munition for a low-pressure launching system having a cylindrical body with a centrally located bore is provided. The bore of the munition has a reduced diameter on the charge end in which a primer charge is positioned. The bore is filled above... | 01/27/2009 |
| 7243603 | Shot pattern control wad structure for shotshell A shot pattern control wad structure for use in a cartridge for shotgun wherein the cartridge includes a case having a tubular outer wall and a wad structure located in the case between gunpowder and a charge of pellets. The wad structure of the present invention is... | 07/17/2007 |
| 7150229 | Projectile wad for ammunition cartridges An ammunition cartridge includes: a basewad disposed within a tube proximate the aft end of the tube; a projectile wad disposed within the tube proximate a fore end of the tube; a propellant charge disposed within a chamber formed between the projectile wad and the ... | 12/19/2006 |
| 6899034 | Controlled energy release projectile A projectile is provided, in accordance with the present invention that includes a gas seal, a wad absorption zone, a core hull, a mass of projectile core particles within the hull and an actuator member. The hull is a cylindrical member having an open end and made ... | 05/31/2005 |
| 6807908 | Non-penetrating projectile A non-lethal projectile or a projectile for delivery of a substance (optional) has a tubular body casing (1) which surrounds a compartment (2) for containment of the substance. The compartment (2) coaxially supports a hollow tube (5) proj... | 10/26/2004 |
| 6161482 | Multi-disk shell and wad The present invention is a multidisk shell and wad for use in a multidisk shell. The wad consists of a wad base, a cushioning section attached at a first end to a top section of the wad base, and at least three alignment arms attached to a second end of t... | 12/19/2000 |
| 5979330 | Integrated one-piece plastic shotshell wad A shotshell wad for use in a shotgun shell is provided. Three discs are disposed within a generally cylindrical tubular wail, and define a gas seal section, a middle section, a shot cup extension section, and a shot cup section. The third disc, which sepa... | 11/09/1999 |
| 5792979 | Two-element wad with pneumatic damping Two-element wad with pneumatic damping designed for the cartridge industry formed by two interchangeable elements connected to each other and which consist of a case and a damper-shutter. The case incorporates a series of foldable flaps and a valve that r... | 08/11/1998 |
| 5623118 | Shot shell wad A shot shell wad may comprise a powder cup and a shot cup connected by first and second shot cup support members positioned in spaced apart relation. Both the first and second shot cup support members include deformable leg sections. A stabilizing member ... | 04/22/1997 |
| 5429054 | Tracer cartridges A tracer wad for a cartridge comprises a shot holder consisting of four quadrants defining between them a tubular member, a tracer element holder and a conical recess leading to a bore for directing ignited propellant onto a tracer element held in the hol... | 07/04/1995 |
| 5361701 | Shotgun slug tracer round and improved shotgun slug A plastic cartridge has a base with a primer pocket and a primer mounted therein. A propellant charge is located within the cartridge and a plastic, collapsible wad is positioned within the cartridge above the propellant charge. A strawlike fusing channel... | 11/08/1994 |
| 5347932 | Shot wad with highly collapsible hinge portion 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... | 09/20/1994 |
| 4773329 | Composite shot wad structure for steel and other hard shot An improved composite wad structure has a unique laminated shot pocket portion. The wad structure is useful in a shotshell with hard shot pellets, such as steel or tungsten shot, having a hardness generally at least equal to that of the barrel of a gun in... | 09/27/1988 |
| 4760793 | Multi-range shot shell Shot shell having a stratified payload of at least two different shot sizes, the larger diameter shot being closer to the mouth of the shell than the smaller diameter shot.... | 08/02/1988 |
| 4574701 | Wad for cartridges of hunting and shooting arms An improved wad and shot cup structure for shotgun shells or so-called shot shell cartridges for hunting and shooting use, including a substantially cylindrical body of plastic material forming a shot cup or bowl (7) containing lead shot (11) and a powder... | 03/11/1986 |
| 4295426 | Plastic wads and wad assemblies for shot cartridges A deformable plastic wad for shot cartridges for hunting and shooting inces a reticular cushioning structure symmetric with respect to the axis of the wad, including portions located on planes parallel and portions located on planes perpendicular to the ... | 10/20/1981 |
| 4173930 | Dimpled shotgun pellets Dimpled shotgun pellets for use in a standard shotshell load (hunting or target; factory load or reloaded) in which the pellets are generally spherical in configuration with a plurality of concave dimples arranged on the outer surfaces thereof. The dimple... | 11/13/1979 |
| 4151799 | Wad for shotgun shell A unitary plastic wad structure for use with a shotgun. The wad includes a shot cup portion and an obturating cup portion with both cups being of cylindrical configuration. The wad further includes a shock absorbing filler comprising transversely, oblique... | 05/01/1979 |
| 4004522 | Shot shell wadding A shot/shell wadding for a shotgun cartridge wherein a progressively collapsible connection is provided between a charge-containing cup and a shot-containing cup, the said connection including co-operable elements which move into frictional engagement on ... | 01/25/1977 |
| 3974775 | Wad unit for shotgun shell A shotgun shell wad comprises A. a downwardly opening cup having a zone adapted to receive an explosive charge, the cup having a transverse base above said zone and a depending annular skirt, B. an upright plunger carried by the base, and C. multiple circularl... | 08/17/1976 |
| 3974770 | Shot container for shotgun cartridges A wad column for shotgun cartridges having a thin-walled shot container portion with narrow elongated openings extending longitudinally of the shot container portion and frangible means located at the ends of the openings.... | 08/17/1976 |