Bizarre Patents
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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5039872 | Digitally synthesized audio frequency voltage source A method and apparatus for accurately generating a digitally synthesized sinusoidal voltage is started by storing digital values for sine waveforms in a read only memory. A first and second digital to analog converters are connected to the read only memor... | 08/13/1991 |
| 4838145 | Multiple actuator hydraulic system and rotary control valve therefor A hydraulic system has a rotary valve which controls multiple hydraulic dces such as double-acting piston type actuators and which prevents deactivated devices from creeping. The valve has an outer housing and a rotatable inner member which form high pre... | 06/13/1989 |
| 4838087 | Quad disk static pressure probe A quad disk static pressure probe apparatus (10) including: a hollow stem member (15) having a plurality of static pressure ports (16) disposed on its periphery; an apertured collar unit (14) surrounding the stem member (15) and being in open fluid commun... | 06/13/1989 |
| 4804446 | Electrodeposition of chromium from a trivalent electrolyte An electrodeposition process and a bath therefore are disclosed for performing the electrodeposition of hard smooth coatings of trivalent chromium. The electrodeposition process is accomplished energy efficiently. The bath includes chromium chloride as a ... | 02/14/1989 |
| 4789779 | Heat pipe oven molecular beam source A recirculating oven molecular beam source of unitary construction compri a shaped porous wicking oven substrate nearly saturated with the working material and having a cavity with source and collimating regions formed therein.... | 12/06/1988 |
| 4772745 | Polymer-reactive photosensitive anthracenes Photosensitive anthracene compounds containing two anthracene rings joined by a flexible linkage, and containing a functional group as an annular substituent on one of the anthracene rings, react with polymers to form materials useful in information proce... | 09/20/1988 |
| 4772524 | Fibrous monolithic ceramic and method for production The present invention is a fibrous monolithic ceramic product of high deny and a process for making the product. The product has a microstructure of coated fibers with planes of weakness between a core of each coated fiber and its respective coat or betw... | 09/20/1988 |
| 4772370 | Process for producing icosahedral materials A method for producing quasi-crystalline films by direct vapor deposition through sputtering is provided. The method is applicable to all alloys which can be converted to quasi-crystalline structure by melt spinning.... | 09/20/1988 |
| 4771022 | High pressure process for producing transformation toughened ceramics Toughening agents are produced by the application of high pressure, sufficient to transform a powder material into a denser high pressure polymorph. When the pressure is released, the high pressure phase is retrieved metastably at ambient conditions of pr... | 09/13/1988 |
| 4765754 | Inclined contact recirculating roller bearing A linear recirculating roller bearing is disclosed where the rollers travel n an inclined groove where the non-loading rolling groove is parallel to the loading roller groove. In the preferred embodiment four sets of rollers are provided which are able to ... | 08/23/1988 |
| 4765750 | Method of determining subsurface property value gradient A method for determining a subsurface property value gradient of a body includes the step of generating a Rayleigh wave in the body by passing a current through a first meander coil having predetermined spaced wires determining a wavelength of the generat... | 08/23/1988 |
| 4765668 | Robot end effector A double-handed, robot end effector or gripper which can be used for moving nd positioning machine parts. The gripper is elongate and symmetric about its longitudinal axis, having a first and a second set of hands extending in each of the two transverse di... | 08/23/1988 |
| 4764863 | Hardware interpreter for finite state automata Apparatus and method for monitoring transactions on a high speed interface us and for selectively storing information about such transactions together with the time of such transaction and the state of the automaton. The apparatus comprises two parallel me... | 08/16/1988 |
| 4760743 | Acoustic scintillation liquid flow measurement A system and method are disclosed for acoustic scintillation liquid flow measurement. Measurement is carried out by acoustic beams transmitted perpendicular to the direction the component of liquid flow to be measured, with both phase and amplitude measur... | 08/02/1988 |
| 4714339 | Three and five axis laser tracking systems A tracking system for measuring at least the spatial coordinates of a target and possibly the angular orientation of the target. A collimated beam is directed to the target and a mirror attached to the target reflects this beam back to a tracking point. P... | 12/22/1987 |
| 4705949 | Method and apparatus relating to specimen cells for scanning electron microscopes Disclosed is an improved specimen cell for maintaining a scanning electron microscope specimen under nearly physiological conditions during observation when said specimen includes liquids having a relatively high vapor pressure. A cavity in the specimen c... | 11/10/1987 |
| 4069479 | High speed, wide dynamic range analog-to-digital conversion A wide dynamic range, wide bandwidth, analog-to-digital conversion system and method. A plurality of overlapped analog-to-digital converters are utilized in conjunction with scaling amplifiers to provide a plurality of output ranges. Means for selecting t... | 01/17/1978 |
| 4008610 | Self-balancing D.C.-substitution measuring system A self-balancing D.C.-substitution R.F. power measuring system includes ft and second high gain differential operational amplifiers, a bolometer element, and a reference resistor element. The amplifiers and the two elements are connected in a current loo... | 02/22/1977 |
| 3968363 | Radiation flux averaging device of high efficiency A flux averaging sphere having an improved efficiency and a high averaging nd diffusing effectiveness over the visible and ultraviolet ranges. The interior surface of the sphere is coated with a white diffusing material which has a higher reflectance for v... | 07/06/1976 |
| 3967140 | Tunnel diode pulse generator A tunnel diode pulse generator is triggered through a directional coupler. he tunnel diode is coupled across one end of an output transmission line through an impedance matching network which matches the characteristic impedance of the transmission line. T... | 06/29/1976 |
| 3966413 | Electrochemical chlorine flux monitor This apparatus for monitoring the chlorine concentration of water has a uue internal calibration capability and a high sensitivity. A water sample is mixed with a solution of potassium iodide and the reaction produces a mole of iodine for every mole of c... | 06/29/1976 |
| 3958269 | Color subcarrier frequency comparator Apparatus for measuring the frequency of a reference signal which utilizes he color subcarrier signal of a television receiver as a standard frequency signal. In a first embodiment, the reference signal controls a circuit to develop bursts of a synthesized... | 05/18/1976 |
