Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 5425571 | Split system full-funtion valve system for heavy duty semi-trailer brake systems A full function brake valve for a semi-trailer is contained within a single housing and provides ports for receiving supply air and control air, and for delivering and receiving air from reservoirs, service brakes and spring brakes, and delivering air to ... | 06/20/1995 |
| 4577910 | Quick release valve arrangement A quick release valve for releasing the locomotive automatic brake independently of the train brakes when an AB/D type freight brake control valve is used on the locomotive. A release valve normally establishes a fluid control passage between the control ... | 03/25/1986 |
| 4163587 | Pneumatic railway braking distributor A brake cylinder fluid pressure distributor having a control valve device of the pressure proportioning type that includes a main and auxiliary reaction piston, each subject on a corresponding face to pressure delivered by the control valve device to the ... | 08/07/1979 |
| 4113319 | Emergency portion for a brake control valve An upgraded railway freight car brake control valve device comprises a novel emergency valve portion that embodies therein a plurality of simple and inexpensive poppet valves and a spool-type valve which valves replace yet perform the same functions heret... | 09/12/1978 |
| 4043604 | Emergency portion for a brake control valve A railway freight car brake control valve device comprises a novel emergency valve portion that embodies therein a plurality of simple and inexpensive diaphragm-type valves certain of which are subject on their respective opposite sides to brake pipe pres... | 08/23/1977 |
| 4025126 | Brake control valve device with movable control reservoir charging valve A brake control valve device operated by a reduction in brake pipe pressure on one side of a movable abutment relative to control reservoir pressure on the opposite side embodies in the abutment a control reservoir charging valve mechanism, a filter and a... | 05/24/1977 |
