Title:
INLET VALVE MECHANISM FOR PLUNGER PUMP
Document Type and Number:
Japanese Patent JP3385503
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce damage of a valve lifter to press a convex lens-shaped valve of an inlet valve mechanism.
SOLUTION: This device comprises a convex lens-shaped valve having a communication hole at a center part to press a valve sheat provided in a valve seat of an inlet valve mechanism to the valve seat when the valve is closed, plural valve lifters 10 to press the convex lens-shaped valve to get apart from the valve seat against energization force of a spring when the valve is opened, a holder 11 having a communication part to hold a base end part 10 of the valve lifter 10, a support shaft 12 to rotatably support the holder 11 at a plunger chamber, and the spring provided around the support shaft 12 to press a tip 10b of the valve lifter 10 to an outer edge part of the convex lens-shaped valve, and the base end part 10a of the valve lifter 10 is rotatably and slidably held to be prevented from removing through a spring 13 between a bottom of a recessed hole 11a formed in the holder 11 and the base end 11b of the valve lifter 10.
Inventors:
Haruo Nakamura
Application Number:
JP154198A
Publication Date:
March 10, 2003
Filing Date:
January 07, 1998
Export Citation:
Assignee:
Niigata Worthington Co., Ltd.
International Classes:
F16K1/04; F04B53/10; F04B53/12; F16K15/18; F16K39/02; (IPC1-7): F04B53/10; F16K15/18
Domestic Patent References:
| JP320199A | ||||
| JP6163486U | ||||
| JP337066B2 | ||||
| JP319917B2 |
Attorney, Agent or Firm:
Michizo Isono
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