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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 4176339 | Propagation sampled acoustic line array An acoustic line array which includes a co-axial cable having a center coctor surrounded by a flexible material of low-electrical conductivity. The flexible material is surrounded by a conducting material protected by an external shield. The cable has ch... | 11/27/1979 |
| 4170766 | Beamformer A beamformer forms a beam from a set of samples of signals from an array of elements such as sonar transducers. Sequences of signal samples from each transducer are delayed relative to each other by fractional amounts of the intersample interval. The sequ... | 10/09/1979 |
| 4115753 | Fiber optic acoustic array A fiber-optic acoustic array using optic hydrophones wherein sound waves are sensed and displayed as modulated light signals. The light signals so generated are transmitted along the fiber-optic bundles. Many such hydrophones are arranged to form acoustic... | 09/19/1978 |
| 4091356 | Heave compensation system A heave compensation system for an underwater towed seismic system of the kind in which a body containing a sound source and hydrophones is towed behind a ship, and a recording is made of echoes from the bottom and sub-bottom layers. An accelerometer in t... | 05/23/1978 |
| 4090168 | Solid filled vibration isolation module for a towed sonar array A vibration isolation module is interposed between a sonar array and its ing cable. A number of nylon cords contained within the vibration isolation module normally bear the load induced by the hydrodynamic drag of the array. Since the nylon cords are en... | 05/16/1978 |
| 4041442 | Acoustic data acquisition system A data acquisition system is provided for acquiring acoustic information from an array placed in a body of water and for transmitting the information through a single transmission line to remotely located data processing equipment. The array includes a pl... | 08/09/1977 |
| 4037189 | Method and apparatus for determining the profile of an underwater pipeline A system for measuring and displaying the side and top profiles of an underwater pipeline as the pipe line is being laid on the sea floor by a pipe laying vessel. The profiles are determined by sequentially measuring the position of points spaced apart al... | 07/19/1977 |
| 4004540 | Galvanic detector for detecting the cutting of a command wire An apparatus and method for detecting the presence of, and severing command ables submerged in an aqueous medium, utilizing a galvanic current pulse generated by a galvanic cell with one electrode thereof serving as a cable cutter.... | 01/25/1977 |
| 4004265 | Self-propelled array system A hydrophone array system comprising a plurality of hydrophones fastened to a cable is deployed beneath the sea in a substantially horizontal straight line. A small powered thruster fastened to one end of the cable urges it in a first direction and this u... | 01/18/1977 |
| 3978811 | Trolling device with parameter detecting means for controlling the device A trolling device for movement through a fluid includes a movable element and control apparatus for selectively stopping the movable element to control the movement of the trolling device through a fluid according to a detected physical parameter. In one ... | 09/07/1976 |
| 3973236 | Horizontal hydrophone array A system for maintaining a two-legged hydrophone array in a horizontal plane is disclosed. This system uses a pair of directional maneuverable drogue chutes for providing tension on the hydrophone arrays and for maintaining the desired angle between the t... | 08/03/1976 |
| 3967232 | Methods of detecting underwater objects and apparatus therefor The invention discloses a method of detecting underwater objects and an apparatus therefor, and is particularly concerned with such methods and apparatus for use in conjunction with a helicopter. A buoyant structure houses a sonar body in a stowed position, an... | 06/29/1976 |
| 3964424 | Influence detecting gear with improved towing characteristics 1. A towable detecting gear adapted for dragging over a water-submerged sace comprising a tail portion, a towing cable having its trailing end enclosed in a tail portion and having at least one insulated conductor, a weight member secured to said cable a... | 06/22/1976 |
| 3940732 | Buoyant electrode and system for high speed towing An electrode structure is disclosed which is particularly adapted for high ensity electrical current transfer to sea water. The electrode of the invention is adapted to be towed within sea water by an aircraft at high rates of speed. The electrode comprise... | 02/24/1976 |
