High vacuum leak valve

• US 3,391,901 A
• Filed: 09/30/1964
• Issued: 07/09/1968
• Est. Priority Date: 09/30/1964
• Status: Expired due to Term

• Current Assignee: Paul W. Hait, William R. Wheeler
• Original Assignee: Paul W. Hait, William R. Wheeler
• Inventors: Wheeler, William R., Hait, Paul W.
• Application Number:
  US04/400,515
• Time in Patent Office: 1,378 Days
• US Class Current: 251/246
• CPC Class Codes: F16K 1/34 Cutting-off parts, e.g. valve members, seats F16K1/06, F16K1/12, F16K1/14, F16K1/26 take precedence
• CPC Class Codes: F16K 51/02 specially adapted for high-vacuum installations
• CPC Class Codes: Y10T 74/19535 Follow-up mechanism

Claims

4. A HIGH VACUUM LEAK VALVE COMPRISING:

A VALVE SHELL PROVIDED WITH AN INLET OPENING AND AN OUTLET PASSAGE;

A VALVE SEAT DISPOSED WITHIN SAID OUTLET PASSAGE;

A VALVE MEMBER DISPOSED WITHIN SAID SHELL ADAPTED FOR MOVEMENT RELATIVE TO SAID VALVE SEAT AND TO BE ENGAGED BY SAID VALVE SEAT UPON VALVE CLOSURE;

SAID SEAT INCLUDING A RETAINING SLEEVE, A SOFT METAL GASKET HAVING AN UPPER AND LOWER PORTION DISPOSED TIGHTLY ABOUT SAID SLEEVE, AND A COLLAR DISPOSED TIGHTLY ABOUT SAID GASKET RING UPPER PORTION, SAID GASKET HAVING A SEATING SURFACE EXTENDING ABOVE SAID COLLAR AND SLEEVE;

SAID GASKET RING LOWER PORTION EXTENDING OUTWARDLY BEYOND SAID COLLAR IN TIGHT FITTING RELATIONSHIP WITH SAID VALVE SHELL;

SAID VALVE MEMBER BEING PROVIDED WITH A HIGHLY POLISHED CLOSURE SURFACE FACING SAID SEATING SURFACE;

AND, UPON VALVE CLOSURE SAID SEATING SURFACE AND SAID CLOSURE SURFACE FORMING A VACUUM-TIGHT SEAL THEREBETWEEN.