...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 4364373 | Solar collector system A vacuum glass tube type heat collector tube with a substantially straight, double cylindrical construction is closed at its initially open end with an end cap having two or more separate ports for heat transmitting medium. A solar system unit is made up ... | 12/21/1982 |
| 4351351 | Breakaway pipe coupling with automatically closed valves A breakaway pipe coupling comprising first and second telescoping pipe sections that are joined together by a load control mechanism designed to release in a controlled manner at a predetermined axial load. The load control mechanism, which may assume the form... | 09/28/1982 |
| 4323094 | Crashworthy aircraft fuel storage system A crashworthy aircraft fuel storage system normally operative so that the fuel tank, fuel shut-off valve assembly and the fuel inlet connection to the fuel tank are normally assembled to be free floating with respect to the aircraft structure, and further... | 04/06/1982 |
| 4270560 | Photo-electric burst disc indicator A photo-electric pressure relief indicator for a fluid system wherein a housing is provided with an opening for connection in fluid communication with the system and provided with a vent spaced from the opening, a rupturable diaphragm extending across the... | 06/02/1981 |
| 4258738 | Crashworthy fuel system A crashworthy fuel system for aircraft or the like comprising a fuel tank d a valve for securement to the bottom of the tank. The valve comprises a generally L-shaped body having a first leg and a second leg extending generally at right angles to the firs... | 03/31/1981 |
| 4174725 | Antitamper arrangement for a locking fuel shutoff valve An arrangement is disclosed for use in conjunction with an antitheft locking fuel line shutoff valve for automotive vehicles which prevents efforts at bypassing or tampering with the valve in attempts to circumvent the locking fuel line shutoff valve. The... | 11/20/1979 |
| 4131142 | Safety valve for fuel dispensers including vapor recovery systems A safety valve for use in fuel dispensing systems including a vapor recovery system and having a valve body, first and second inlets in the body, first and second outlets in the body, first and second, separate, fluid flow passages in the body and extendi... | 12/26/1978 |
| 4119111 | Frangible hose end fitting An end fitting for flexible hose consisting of a body formed by two separable portions interconnected by frangible means. The fitting body includes a valve normally held in the open position permitting unrestricted flow through the fitting and upon separa... | 10/10/1978 |
| 4077422 | Flow control means for compressed gas cylinders A fail-safe shutoff device used in conjunction with a high-pressure control valve for compressed gas cylinders which will immediately check uncontrolled gas flow from the cylinder generally associated with a damaged or defective control valve. The shutoff... | 03/07/1978 |
| 4064889 | Break-away safety valve A safety arrangement for a gasoline dispensing station equipped with a vapor recovery system. Gasoline vapors displaced from a motor vehicle fuel tank during filling are collected through the dispensing nozzle, and are directed first through a flexible ho... | 12/27/1977 |
| 4056117 | Bottom outlet safety closure The outlet valve of a container for fluids is suspended from such container by a spring-biased safety closure mechanism that is protected from damage and has an actuating mechanism that breaks away with the outlet valve on impact capable of causing the ou... | 11/01/1977 |
| 4047548 | Vapor recovery system with safety valve A safety arrangement for a gasoline dispensing station equipped with a vapor recovery system. Gasoline vapors displaced from a motor vehicle fuel tank during filling are collected through the dispensing nozzle, and are directed first through a flexible ho... | 09/13/1977 |
| 4023584 | Frangible valved fitting A valved fluid coupling having tubular halves interconnected by frangible means. Each half includes a self-closing valve located in its passage and the valves are maintained in an open position by supports and retainers which sense the coupling connected ... | 05/17/1977 |
| 3999567 | Tank truck safety valve The valve includes an upper or inner portion housing, a first spring which acts on the top of a valve member and normally urges it into sealing engagement with a seat, and a lower or outlet portion carrying an actuator pin having an inner end which diseng... | 12/28/1976 |