Piston structure for an air pump

Details Piston structure for an air pump Piston structure for an air pump

2007-06-12

2007-06-12

Leslie, Michael (Department: 3745)

Expansible chamber devices

Piston

With fluid passage in piston face

C092S245000, C092S255000

Reexamination Certificate

active

11321867

ABSTRACT:
A piston for an air pump is disclosed. The piston has a piston rod having a connecting axle hole for positioning a bearing, which is protected with a bearing protection cap. The bearing is firmly secured within the axle hole.

REFERENCES:
patent: 3961868 (1976-06-01), Droege et al.

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