Patents Examined by Tyrone Davis
-
Patent number: 4450544Abstract: The acoustical energy absorbing baffle has a pair of restricted orifice screens rigidly secured in parallel, spaced relation by a lattice stiffener. The screen-stiffener assembly is immersed in a viscous fluid contained within a tank sealed with an elastic diaphragm. Incident acoustical energy is transmitted through the diaphragm and translated into energy absorbing motion of the fluid through the restrictive screens. A compliant mass is acoustically coupled to the fluid to augment fluid particle velocity through the screens and to further absorb energy.Type: GrantFiled: November 16, 1981Date of Patent: May 22, 1984Assignee: Sperry CorporationInventors: Alfred Denaro, George Rand
-
Patent number: 4449211Abstract: A plurality of transducers, closely conforming to the surface of a low-drag ose, are baffle mounted in close pack configurations to eliminate grating lobes. The baffle assembly is mounted outside a pressure hull within a thin acoustically transparent fairing. A plurality of pressure compensators also attach outside the pressure hull. The cavity between pressure hull and fairing is filled with pressure compensating acoustic fluid. Larger portions of unused volume are first filled with a syntactic foam to minimize the amount of fluid required. The pressure compensators balance fluid pressure against external sea pressure to prevent fairing collapse. This array maximizes available nearby internal nose volume thus allowing beamforming electronics to be located within the pressure hull in close proximity to the array elements, connecting thereto via a plurality of short coaxial cables.Type: GrantFiled: July 6, 1982Date of Patent: May 15, 1984Assignee: The United States of America as represented by the Secretary of the NavyInventors: Richard L. Schmidt, Edmund J. Sullivan, Bernard J. Myers, Edward G. Liszka
-
Patent number: 4449210Abstract: Apparatus is provided including a light source, a transducer and a detector, which is capable of detecting applied acoustic signals. The transducer employs first and second ridged members which have parallel rippled surfaces which contact opposite sides of a fiber optic waveguide. Each rippled surface has a different predetermined ripple pitch which provides for variable sensitivity along one dimension of the transducer. Modulation of the position of the ridged members relative to one another by means of applied acoustic signals causes microbend attenuation of light transmitted through the waveguide. The modulation of the light provides an indication of the presence of the acoustic signals. The variation in dimensional sensitivity provided by the transducer allows for a determination of the direction of arrival of the acoustic signals. Appropriate selection of pitch and pitch ratio of the two rippled surfaces provides any desired spatial sensitivity distribution of the hydrophone.Type: GrantFiled: December 21, 1981Date of Patent: May 15, 1984Assignee: Hughes Aircraft CompanyInventor: Jon H. Myer
-
Patent number: 4446795Abstract: A metallic projectile body with a plastic rotating band comprising a band seat zone on such projectile body coated with a sprayed metallic coating, and a polymer molded over said sprayed metallic coating to form a plastic rotating band.Type: GrantFiled: December 31, 1981Date of Patent: May 8, 1984Assignee: Honeywell Inc.Inventors: Stephen J. Price, Charles R. Hargreaves
-
Patent number: 4445436Abstract: A projectile for a gun-vane centrifugal launching device is disclosed, of the type with an ogival head, a body and a tail of decreasing section. The body is cylindrical and the weight of the tail is chosen in such a way that the center of gravity of the projectile lays in the plane where the body joins the tail or in the immediate vicinity of this plane. The shape of the said tail is such that no point of the surface of the latter touches the wall of the gun-vane, particularly during the ejection of the projectile.Type: GrantFiled: November 30, 1981Date of Patent: May 1, 1984Inventor: Leon L. Rutten
-
Patent number: 4444119Abstract: An impulse generator for providing an impulsive force substantially normal o the axis of a missile to provide the missile with the desired angle of attack. The device includes radial explosive paths to its periphery and from each point on the periphery detonation is transferred to the periphery of the main charge causing it to implode.Type: GrantFiled: July 2, 1982Date of Patent: April 24, 1984Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Elso R. Caponi
-
Patent number: 4441429Abstract: A retainer for attaching a rotating band to a projectile during handling ramming of the projectile. The retainer cooperates with a groove on the projectile and is discarded during firing of the projectile by the force of the charge. An interlocking double split ring forms the retainer with an outer ring having an L-shaped cross-section and an inner ring shaped to fit into the L-shape of the outer ring. Each ring is provided with a split or opening to allow for expansion of the ring over the projectile and into the projectile groove. The outer ring split may be cut at an angle of less than 90.degree. to minimize deflection of the outer ring. The inner and outer rings are assembled with their splits together and then clocked 180.degree. apart. The inner ring is then locked to the outer ring by a locking notch. Hoop stress of the outer ring prevents the inner ring from deflecting at the split such that the retainer is forced to behave as a continuous single ring.Type: GrantFiled: December 23, 1981Date of Patent: April 10, 1984Assignee: The United States of America as represented by the Secretary of the NavyInventors: Abner B. Price, William S. Burnley, III
-
Patent number: 4434718Abstract: A discarding sabot projectile for shotgun of unique construction whereby the separation of the projectile and sabot is enhanced by opposing air pressure and the unique construction of the sabot. The sabot as utilized herein comprises a plastic body firmly encompassing, but not completely encapsulating a subcaliber projectile. The plastic body includes a plurality of longitudinally extending slots forming symmetrical segments and further, segment having longitudinally extending grooves for reducing friction between the barrel bore and the sabot. The segments are further defined at the other end thereof by longitudinal tapered edges. The sabot, upon exiting the launching device begins to separate from the enclosed projectile beginning at the uppermost front end of the sabot as a result of air pressure flowing in the opposite direction of the sabot.Type: GrantFiled: September 11, 1981Date of Patent: March 6, 1984Inventors: Paul J. Kopsch, Donald F. Ward, Jay Graber, Omer Nichols
-
Patent number: 4430943Abstract: A fin-stabilized projectile having a sabot which forms a practice projectile with a sub-caliber projectile including a sabot whose base includes a passageway for propellant charge gases and a projectile component which is displaceable by the gases.Type: GrantFiled: July 24, 1981Date of Patent: February 14, 1984Assignee: Diehl GmbH & Co.Inventors: Erich Bock, Wolfgang Mosig
-
Patent number: 4432080Abstract: A compact subwavelength size monopole underwater sound radiator has chararistics to maximize resistive radiation impedance, minimize reactive radiation impedance, facilitate heat dissipation and minimize compensating air usage. This results in improved efficiency, bandwidth and use factor. The underwater sound radiator uses two back-to-back mounted, frustum shaped, hollow, radiating shells to achieve radiation characteristics approximating those of an equivalent sized pulsating sphere. An elliptically shaped, uniform cross-section magnetostrictive ring crossed by a linear piezoelectric spreader comprises a compact eclectic driver. Both the magnetostrictive ring and the piezoelectric stack contribute to the output through inverse phase cyclic changes in their respective lengths those changes being added and amplified by the flexural-bow type action of the elliptically shaped magnetostrictive ring.Type: GrantFiled: October 1, 1981Date of Patent: February 14, 1984Assignee: The United States of America as represented by the Secretary of the NavyInventor: William F. Wardle
-
Patent number: 4430942Abstract: An improved missile/canister support pad control system wherein rods having a flexible curved section are interconnected to the support pads and are detachably held parallel to the missile by releasing means. Upon command, after the missile leaves the canister, the releasing means allows the rods to spring away from the missile. The resultant wind in combination with the spring rods lifts and rotates the system away from the missile so as not to recontact the missile surface.Type: GrantFiled: November 5, 1981Date of Patent: February 14, 1984Assignee: The United States of America as represented by the Secretary of the Air ForceInventor: Roy J. Heyman
-
Patent number: 4428294Abstract: A finless non-spinning round is able to maintain range accuracy and reduced un tube wear by the use of a single base cool burning propellant, an improved shape wear liner, and a warhead projectile configured to position the center of gravity of the warhead so that it is equal to or greater than 0.5 calibers forward of the warhead's aerodynamic center of pressure.Type: GrantFiled: August 16, 1982Date of Patent: January 31, 1984Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Edmund W. Falkowski, Michael J. Kolasa
-
Patent number: 4421033Abstract: Exercise projectile substantially of a configuration defined by a pointed head prolonged by a tail-piece, characterized in that the projectile contains at least one explosive charge and an associated device for delayed firing, the duration of the delay substantially corresponding to the statistical flight time of the projectile from its starting time to the end of its intended useful trajectory.Type: GrantFiled: August 31, 1981Date of Patent: December 20, 1983Assignee: s.a. PRB, societe anonymeInventor: Gerard E. Dupont