Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 4970589 | Head mounted video display and remote camera system A video system is disclosed having a weapon-mounted video camera (12) transmitting video signals to a remotely located video display (14). The video display is mounted to the helmet (40) of a soldier (36), and includes a sight reticle (50) superimposed on... | 11/13/1990 |
| 4955024 | High speed image processing computer with error correction and logging Disclosed is an image processor having an image algorithm processor (66) operating under control of a writable control store (94), and a number of parallel image processors (72) operating under control of instruction words from a writable control store (1... | 09/04/1990 |
| 4943821 | Topological panorama camera A camera (10) comprises a track (14) and a camera unit (12) which is operable to move along the track (14). The camera unit (12) comprises a slit aperture camera for producing a panoramic image. A motor (28) on the camera unit (12) provides power to wheel... | 07/24/1990 |
| 4941470 | Face mask with ear loops and method for forming A face mask (10) includes a layer (12) of meltblown polypropylene fabric having pleats (18-22) formed therein. An ear loop (14) and an ear loop (16) formed from lycra spandex are attached to the corners of the layer (12). Application of heat along seams (... | 07/17/1990 |
| 4935958 | Busy/no-answer call completion equipment Apparatus for recognizing a telephone call supervision signal by comparing its frequency and cadence to the frequency and cadence of a previously learned call supervision signal is provided as part of call completion equipment (10). Call progress tone det... | 06/19/1990 |
| 4935925 | Adaptive digital network interface A multiplexing data communication system (10) provides for communication between a plurality of microcomputer terminals (12) with a host computer (30). Communications from the microcomputer (12) are multiplexed over a T1 line (26) between two DMI interfac... | 06/19/1990 |
| 4933966 | Method and apparatus for performing an automated collect call A telephone system and method of operation are disclosed which use a microprocessor control system (10), a speech generator (34) and speech memory (46) to automatically place collect calls without the need of a live operator. The telephone uses the microp... | 06/12/1990 |
| 4933965 | Short time validity storage of a billing account number at a local telecommunications station A telephone system and method of operation are disclosed which use a microprocessor control system (10), a speech generator (34) and speech memory (46) to interact with a calling party placing a long distance phone call. The telephone receives a billing a... | 06/12/1990 |
| 4929356 | Environment protector for replaceable cartridge filters A protective cover (10) is provided to contain any spillage of liquid during changing of a filter cartridge from a filter canister assembly (12). The cover (10) comprises an elastomer that is resistant to gasoline and oil. The cover (10) is slidably posit... | 05/29/1990 |
| 4927237 | Universal night vision goggle adapter A universal night vision goggle adapter (38) is provided for mounting a pair of night vision goggles (40) to a Special Purpose Test Set (10). The adapter (38) comprises slidably adjustable clamps (61 and 62) which are adjusted by a rotating rod (46). The ... | 05/22/1990 |
| 4926704 | Valve test plug A valve test plug for connection with a pressure vessel. The plug includes a hollow valve body and a resilient valve core. The valve core includes first and second core portions bonded in end-to-end relationship and has a slit extending therethrough. The ... | 05/22/1990 |
| 4924949 | Drill pipes and casings utilizing multi-conduit tubulars A multi-conduit tubular having fluid conduits (30) and electrical conduits (108), with associated surface fluid (182) and electrical (186) commutators, and downhole sensors (18, 20, 290) for providing surface monitors (22) with instantaneous formation dat... | 05/15/1990 |
| 4920960 | Body fluids barrier mask A face mask (10) is provided for covering the mouth and nose of a wearer (14). The mask (10) prevents the passage of liquid from external to the mask to the face of the wearer (14). The mask (10) has four layers including a special low density polyethylen... | 05/01/1990 |
| 4920562 | Automatic generation of billing records at a telephone paystation A telephone system and method of operation are disclosed which use a microprocessor control system (10), a speech generator (34) and speech memory (46) to interact with a calling party placing a long distance phone call. The telephone establishes a commun... | 04/24/1990 |
| 4920558 | Method and apparatus for downloading speech files A telecommunications system and method of operation are provided which allows for the recording and downloading of message prompts to a telephone (80) from a remote location. A message is recorded by a recorder (70) and the recorded message is digitized b... | 04/24/1990 |
| 4916578 | Personal computer chassis connection and method L-shaped flanges (20) are formed integrally with both edges of the base (12) on a computer chassis (10). U-shaped channels (26) are also formed integrally with both edges (21-22) of the cover (14) on the computer chassis (10). The cover (14) is installed ... | 04/10/1990 |
| 4915918 | Medical instrument sterilization container Disclosed is a medical instruments sterilization container (10) which includes a housing (12) and a removable lid (14). A removable tray (16) is adapted to hold various medical instruments to be sterilized. The container is formed of a polymer of relative... | 04/10/1990 |
| 4910891 | Device for attaching earth-working tools to excavating equipment A device for attaching various earth-working tools to a bucket of excavating equipment, such as a front-end loader, backhoe, or excavator. A frame has two spaced parallel plates, each having a wedge-shaped notch on one side. A stabilizing bar, adjacent to... | 03/27/1990 |
| 4908962 | Custom midsole for heeled shoes A midsole (10 and 32) for heeled shoe (12) comprises a removable insert (10), a peripheral heel member (26) and a peripheral midsole member (32). The peripheral heel member (26) is joined to a portion of the perimeter of an upper surface (20) of an outsol... | 03/20/1990 |
| 4908852 | Method and apparatus for altering the access format of telephone calls A telephone system and method of operation are disclosed which use a microprocessor control system (10), a speech generator (34) and speech memory (46) to automatically place calls without the need of a live operator. The telephone receives a destination ... | 03/13/1990 |
| 4908746 | Industrial control system A control system (10) controls transfer of electronic signals to and from industrial and scientific equipment. The control system includes a real-time database (60) for storing data elements which may be accessed by a plurality of tasks (62, 64, 66, 68, 7... | 03/13/1990 |
| 4907585 | Method for improving farsightedness The specification discloses apparatus for changing the radius of curvature of a cornea, which includes a needle (34) for being inserted into the periphery (14) of the cornea (10). A device (36, 38, 40) heats the needle (34) to a temperature sufficient to ... | 03/13/1990 |
| 4907450 | Lockable water meter expansion connection and method A threaded packer (40) is inserted into a first enlarged end (52) of an expansion tube (31). Driver dogs (50) on the threaded packer (40) mesh with dog recesses (54) on the expansion tube (31). The threaded packer (40) and the expansion connection (31) ar... | 03/13/1990 |
| 4905382 | Custom midsole A midsole (10 and 22) for an activewear shoe (12) comprises a removable insert (10) and a peripheral member (22). The peripheral member (22) is joined to the perimeter of an upper surface (18) of an outsole (14) to form a receptable (28). A reinforcing la... | 03/06/1990 |
| 4902895 | Capacitive bolometer and method for detecting infrared radiation The capacitive bolometer comprises a detection capacitor having a first-order phase transition ferroelectric material between two electrodes. The detection capacitor operates during a detection step and a subsequent readout step. During the detection step... | 02/20/1990 |
| 4902306 | Dual-dipole electrostatic air filter A filter assembly (10) for removing particulate matter from air forced therethrough comprises two pairs of oppositely charged woven electrostatic filtering material. Each pair of electrostatic filtering material comprises a positively charged and a negati... | 02/20/1990 |
| 4901308 | Digital bridge for a time slot interchange digital switched matrix A time slot interchange matrix is comprised of a plurality of matrix modules (50-56) each for receiving data on a plurality of channels and transmitting data on the same number of channels. Each of the modules consists of separate banks of random access m... | 02/13/1990 |
| 4900519 | Medical instrument sterilization container A medical instruments sterilization container (10) includes a housing (12) and a removable lid (14). A removable tray (16) is adapted to hold various medical instruments to be sterilized. The container is formed of a polymer of relatively low thermal cond... | 02/13/1990 |
| 4890317 | Automatic validation of telephone account numbers A telephone system and method of operation are disclosed which use a microprocessor control system (10), a speech generator (34) and speech memory (46) to interact with a calling party placing a long distance phone call. The telephone receives a billing a... | 12/26/1989 |
| 4890254 | Clock disabling circuit In a communications system (10), data is transferred from a physical interface section (64) and two processors, a receive processor (66) and a transmit processor (68). The data is transferred from the physical interface (64) to the receive processor (66) ... | 12/26/1989 |
| 4888709 | Electronic product information display system An electronic product information display system includes a plurality of self-contained display modules (10) mounted proximate to respective products. A signal (22) is formed that comprises an address part and a data part, the address part corresponding t... | 12/19/1989 |
| 4887887 | Lens retainer for optical element A retainer ring (10) is provided to secure a lens (14) in a lens holder (12). The lens holder (12) has a groove (29) on its internal surface to match the external surface (34) of the ring (10). The lens (14) is placed in the lens holder (12) and the ring ... | 12/19/1989 |
| 4885739 | Interprocessor switching network A message transport network (10) is provided for high speed switching between processing elements (72, 80). Clusters of low speed processing elements (72) may be connected to the message transport network (10) through a transport node controller (78). The... | 12/05/1989 |
| 4884137 | Head mounted video display and remote camera system A video system is disclosed having a weapon-mounted video camera (12) transmitting video signals to a remotely located video display (14). The video display is mounted to the helmet (40) of a soldier (36), and includes a sight reticle (50) superimposed on... | 11/28/1989 |
| 4881328 | Custom midsole A midsole (10 and 22) for an activewear shoe (12) comprises an insert (10) and a peripheral member (22). A plurality of independent cushioning elements (34) depend from a base member (32) of insert (10), and are sized in order to conform to the lift of pe... | 11/21/1989 |
| 4875544 | Transducer for inducing seismic signals into an elastic medium A coupling member for coupling forces generated by a seismic transducer into an elastic medium, such as the earth, wherein the coupling member includes a plurality of discrete cleat members that project downwardly from the lower surface of the coupling me... | 10/24/1989 |
| 4873395 | Personal computer expansion slot seal and method A personal computer CPU chassis (10) is sealed from the emission of radio frequency (RF) through the expansion slots (24) in the rear panel (18). An expansion slot seal (37) is dimensioned to fit over the edges or strips (32-34) of the slots (24) and is h... | 10/10/1989 |
| 4872599 | Telemetry pouch with expansible chest strap Provided is a pouch (12) for maintaining hospital telemetry appartus secured to the patient. The pouch (12) includes an open-topped bag (18) formed from opposed flexible side walls (24, 26) joined at the side and bottom edges thereof, the top edges (30, 3... | 10/10/1989 |
| 4870846 | Method and apparatus for embossing the inside surface of a cup-shaped article A draw/emboss work station (600) of the invention includes emboss punch (594) moveable by a hydraulic system under control of a press slide (34). An emboss punch head (632) is moved downwardly into a cup-shaped article (626) to bring the article into a dr... | 10/03/1989 |
| 4858232 | Distributed switching system A switching system (10) configured in a ring topology (14) is disclosed. The system (10) causes one or more 125 microsecond isochronous frames (20) to circulate in the ring (14) at any given instant in time. A delay circuit (22) temporarily saves an oldes... | 08/15/1989 |
