Back to results
US 4,307,816 AGranted
Meter closure
AssigneeHersey Products, Inc.
InventorA. Paul Manasas
Life of this patent
Estimating the term…
Abstract
A threaded closure having force-transmitting thread surfaces that face inwardly, whereby the forces acting on a casing wall directly above the closure imposed directly by a pressurized liquid and the forces on the casing wall adjacent to the closure transmitted from the top of the closure and through the closure threads are subtractive.
Claims4
A pressurizable article of manufacture comprising
- a casing for enclosing pressurized liquid in a zone and
- a closure having an axis and attached in said casing by a thread,
- said thread having a first surface for each thread closer to said zone and a second force-transmitting surface for each thread farther from said zone, said force-transmitting surface defining with said axis away from said zone acute angles and thus inclined inwardly toward said zone,
- whereby the forces acting on a casing wall directly above said closure imposed directly by said pressurized liquid and the forces transmitted through said casing wall adjacent said closure through said closure threads are substractive.
1 more element
Dependencies are inferred from the claim text.