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| Number | Title | Issue Date |
| 4611913 | Method and apparatus for analyzing ophthalmic elements and the like The disclosure concerns the determination of the ophthalmic parameters of a thin astigmatic optical element without requiring initial location of its cylindrical axis. The effective optical power of the eye or other element is measured in three mutually s... | 09/16/1986 |
| 4554257 | Assaying immunoreactive and like substances by measurement of aggregate classes The disclosed methods improve conventional agglutination processes for assaying immunoreactive and like substances, primarily by improving the measurement of the agglutination itself. Suspensions containing agglutinated particles are automatically inspect... | 11/19/1985 |
| 4359884 | Dual key locks having improved precision and versatility The lock configuration described in the parent application enables a dual key lock to operate efficiently, accurately and conveniently with a single stack of tumblers. Also, the individual tumblers of the invention are typically receivable in the lock in ... | 11/23/1982 |
| 4338165 | Method of making a high-gain projection screen Lenticular projection screens of improved optical accuracy and uniformity are produced by deriving the specular surfaces of all lenticules within at least a major screen area from a common unitary optical surface, typically using replication by electrofor... | 07/06/1982 |
| 4332153 | Dual key locks with multi-function tumblers The invention provides an improved lock configuration by which a dual key lock can operate efficiently and conveniently with a single stack of tumblers. That configuration permits more accurate positioning of the tumblers upon key operation, whereby a lar... | 06/01/1982 |
| 4329945 | Apparatus for metering fuel additives to internal combustion engines Control apparatus is described for metering a liquid additive to be vaporized and introduced to the fuel mixture for an internal combustion engine. Improved enhancement of the combustion process is obtained by supplying the additive in accurate and reliab... | 05/18/1982 |
| 4299403 | Wheeled carrier for hand luggage and the like The present baggage carrier frame, comprising two foldable sections of truss-like configuration with a foldable platform at the lower end, provides enhanced frame stiffness with minimum increase of weight. The positive locking mechanism for holding the se... | 11/10/1981 |
| 4294569 | Single column load dividing gate The present suspension mechanism for load dividing gates of single column type promotes reliability and safety by extreme simplicity and unity of carriage structure, together with highly effective provision against structural failure even of the inherentl... | 10/13/1981 |
| 4287619 | Multi-purpose chair for the partially disabled The chair of the invention comprises a chair frame and accessories which can be assembled in various combinations and can be operated in various modes to perform a plurality of functions by which persons with physical limitations can become more independe... | 09/08/1981 |
| 4285049 | Apparatus and method for selecting finite success states by indexing A finite state automaton (FSA) may be used to search a stream of input digital code data representing patterns such as text characters, for example, to identify a plurality of designated query words. When a particular one of the sought values of a charact... | 08/18/1981 |
| 4244803 | Quantitative protein analysis by immunodiffusion Methods and apparatus are described by which immunochemical procedures such as immunodiffusion and immunoelectrophoresis can be used to provide quantitative measurement of the concentration of individual proteins in fluids such as serum, spinal fluid, tis... | 01/13/1981 |
| 4244797 | Quantitative protein analysis by immunodiffusion Methods and apparatus are described by which immunochemical procedures such as immunodiffusion and immunoelectrophoresis can be used to provide quantitative measurement of the concentration of individual proteins in fluids such as serum, spinal fluid, tis... | 01/13/1981 |
| 4241402 | Finite state automaton with multiple state types The subject of this disclosure is a Finite State Automaton (FSA) used as part of a term detector employed in a digital pattern search system (searcher). In particular the invention includes various advances in the art of FSA design which make the FSA prac... | 12/23/1980 |
| 4235513 | High-gain projection screen Lenticular projection screens of improved optical accuracy and uniformity are produced by deriving the specular surfaces of all lenticules within at least a major screen area from a common unitary optical surface, typically using replication by electrofor... | 11/25/1980 |
| 4193647 | Piezoelectric ceramic transducers with uniform resonant frequency The resonant frequency of piezoelectric transducers is made more uniform from unit to unit by reducing the sensitivity of that frequency to manufacturing variations in the diameter of the ceramic sensing disk that forms a part of the vibratory diaphragm a... | 03/18/1980 |
| 4190782 | Piezoelectric ceramic resonant transducer with stable frequency The invention reduces variability of the resonant frequency in piezoelectric ceramic transducers having a vibratory assembly comprising a flexible diaphragm carrying a ceramic disk sensor. The clamped edge of the diaphragm is typically offset from the pla... | 02/26/1980 |
| 4167916 | Liquid loader for applicator pattern wheels Obstructive formations are mounted within the liquid containing chamber closely adjacent the working surface of an applicator wheel and opposite the path of one or more of the pattern-forming wheels recesss. Escape of air or recirculated liquid from the r... | 09/18/1979 |
| 4162208 | Quantitative protein analysis by immunodiffusion Methods are described by which immunochemical procedures such as immunodiffusion and immunoelectrophoresis can be used to provide quantitative measurement of the concentration of individual proteins in fluids such as serum, spinal fluid, tissue extracts a... | 07/24/1979 |
| 4157146 | Safety clamping system for pressure vessel closures and the like Individual clamping structures are described which require only two main members, a pivoted handle member and a clamping member journaled on an integral boss on the handle member. Several types of cam structure are described for positively breaking the pr... | 06/05/1979 |
| 4154978 | Self-contained bidirectional amplifying repeater Bidirectional repeater circuits for bus-lines and the like are described which, when in idle condition, are capable of promptly transmitting binary data signals in either direction with amplification to restore wave form. A control signal is derived from ... | 05/15/1979 |
