Patents Assigned to Sybron Corp.
  • Patent number: 4353695
    Abstract: A pneumatically operated piston is used to move an extended utility line back into a dental unit. The unit has a vent valve which permits the free exhaust of air from the unit as the utility line is pulled from the unit. For retraction of the utility line, the application of pneumatic pressure to move the piston also operates to close the vent valve.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: October 12, 1982
    Assignee: Sybron Corp.
    Inventor: Gerd H. Merkle