In the field of seismic exploration, compressed-air guns may be used as sound sources. Known air guns employed complex valving and were wasteful of compressed air. The air gun sound source of this invention is of simple construction and is economical of compressed air. The gun (10) consists of an elongated housing (34) that has at least one radially-positioned exhaust port. The housing is charged with a volume of compressed air. A hollow cylindrical actuator (60) is mounted inside the housing and may be hydraulically or pneumatically driven within the housing in longitudinal strokes. The actuator has at least one radially positioned aperture (88) alignable with the exhaust port. A valve or sealing pad (96) is mounted in each aperture. An orifice (104) is cut into each pad.
Multi-Contact Connectors With Individual Resilient Contact Inserts
Garland H. Walker - Houston TX Ernest M. Hall - Houston TX
Assignee:
Western Geophysical Co. of America - Houston TX
International Classification:
H01R 1342 H01R 2320
US Classification:
339 49B
Abstract:
The electric multi-contact connector consists of twin half-housings. Each half-housing carries a plurality of contact holders independently mounted in spaced-apart relationship on a multi-bore base. The prong-end of each contact is resiliently supported by its holder and makes a water-tight joint therewith. When the two half-housings are moved into latching engagement, each pair of mating prong-ends of the opposite connector half-housings inosculate. Each prong-end is preferably serrated to improve the conductivity between each mating pair of prong-ends under adverse operating conditions.
Mitchell Incentive Elementary School Little Rock AR 1956-1960, Kramer Elementary School Little Rock AR 1960-1962, East Side Junior High School Little Rock AR 1962-1964, West Side Junior High School Little Rock AR 1964-1965, Metropolitan High School Little Rock AR 1964-1968
Community:
Terry Thompson, Monica Lovelace, Charlene Webster, Elaine Maynard, John Buczkowski
Ronald Kinzer, Chris Mabe, Cherry Fulgencio, Myron Brown, David Adkins, Donna Carden, Gary Browning, Brenda Walls, Jim Lily, Sheila Browning, Amy Lilly