Valve-leaf protective structure for pressure for regulator...

Fluid handling – With casing – support – protector or static constructional... – Guards and shields

Reexamination Certificate

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Details

C137S908000, C128S200290, C128S204260

Reexamination Certificate

active

06990995

ABSTRACT:
A valve-leaf protective structure for pressure regulator of air tank used in diving mainly includes a valve-leaf seat being provided at a lower center with a retaining hole and at two sides with two raised supports, each of which is provided at an upper inner surface with a rotary shaft hole; and a valve-leaf protective cover located between the two raised supports of the valve-leaf seat, and provided at two upper outer ends with two sideward projected rotary shafts for rotatably mounted in the two rotary holes on the raised supports. A lower side of the protective cover is formed into a tongue having a hook provided at a lowermost end thereof to detachably engage with the retaining hole at the lower center of the valve-leaf seat. Therefore, the protective cover may be pivotally turned about the rotary shafts between the raised supports to close or open the valve-leaf seat.

REFERENCES:
patent: 4784129 (1988-11-01), Garraffa
patent: 4796618 (1989-01-01), Garraffa
patent: 5127398 (1992-07-01), Stone
patent: 5558466 (1996-09-01), Kuo et al.
patent: 6718976 (2004-04-01), Matsuoka
patent: 2002/0134385 (2002-09-01), Pietrelli
patent: 1243503 (2002-09-01), None

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