Patents by Inventor Neli Ulea

Neli Ulea 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).

  • High-vacuum valve with retractable valve plate to eliminate abrasion
    Patent number: 6854708
    Abstract: A valve achieves a high-vacuum seal and opens and closes with no sliding or otherwise abrading contact between the sealing plate and the valve seat, while maintaining pressure of the plate against the valve seat in the event of a failure in the valve actuation mechanism. These results are attained by use of a composite valve plate that includes a sealing plate joined to a support block through a retractable resilient connector. During retraction, the sealing plate is drawing close to the block by a pneumatic actuator internal to the composite valve plate, the actuator arranged to oppose and overcome a mechanical resilient element also contained within the valve plate that urges the sealing plate outward from the support block to effect the seal when the actuator is not engaged.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: February 15, 2005
    Assignee: MDC Vacuum Products Corporation
    Inventors: Jose L. Contin, Neli Ulea
  • High-vacuum valve with retractable valve plate to eliminate abrasion
    Publication number: 20040079915
    Abstract: A valve achieves a high-vacuum seal and opens and closes with no sliding or otherwise abrading contact between the sealing plate and the valve seat, while maintaining pressure of the plate against the valve seat in the event of a failure in the valve actuation mechanism. These results are attained by use of a composite valve plate that includes a sealing plate joined to a support block through a retractable resilient connector. During retraction, the sealing plate is drawing close to the block by a pneumatic actuator internal to the composite valve plate, the actuator arranged to oppose and overcome a mechanical resilient element also contained within the valve plate that urges the sealing plate outward from the support block to effect the seal when the actuator is not engaged.
    Type: Application
    Filed: July 21, 2003
    Publication date: April 29, 2004
    Applicant: MDC Vacuum Products Corporation
    Inventors: Jose L. Contin, Neli Ulea