Patents by Inventor A. Herbert Ershig

A. Herbert Ershig has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dual wall vessel for primary and secondary liquid containment
    Patent number: 4871081
    Abstract: A containment vessel for potentially harmful fluid including a fluid impermeable primary container having a multi-layer floor including a leak detection system. A concentric secondary fluid impermeable containment vessel surrounds and is spaced from the primary containment vessel and likewise includes a multi-layer floor including a leak detection system.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: October 3, 1989
    Assignee: Ershig's, Inc.
    Inventor: A. Herbert Ershig
  • Mechanical lock for vessels
    Patent number: 4775074
    Abstract: A segmented mechanical lock for a container including arcuate segments 12, 14, 16 having upstanding pins 18, pivot ring 20 having tangential slots 22 overlies the segments and upon rotary motion moves them outwardly into a groove 48 locking lid 6 in position in vessel 4.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: October 4, 1988
    Assignee: Ershigs, Inc.
    Inventor: A. Herbert Ershig
  • Sealing adapter for pipe for differing material
    Patent number: 4660864
    Abstract: A sealing adapter hoop (6) designed to be sealingly slip fitted over conduits of differing structure (2,4) including chamferred ends (14,22), a smooth surface (20) to interact with a captured O-ring (30) and a groove (16) to accept a second O-ring (18).
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: April 28, 1987
    Assignee: Ershigs, Inc.
    Inventor: A. Herbert Ershig