Expansible chamber devices – With guide or seal on cylinder end portion for piston or... – Non-metallic seal means between piston or member and end...
Patent
1996-10-17
1998-04-21
Denion, Thomas E.
Expansible chamber devices
With guide or seal on cylinder end portion for piston or...
Non-metallic seal means between piston or member and end...
92257, 92255, 92128, 277124, F16J 1518
Patent
active
057407185
ABSTRACT:
A piston rod assembly is provided for operation in an outer cylinder. The piston rod assembly includes a first rod having first and second regions, wherein the first region has a hole transversely aligned relative to the longitudinal axis of the first rod. A hollow, cylindrical bushing is disposed within the hole of the first rod. A second rod has first and second regions, the first region of the second rod being removably secured to the second region of the first rod. A packing sleeve for fluidly sealing the piston rods and outer cylinder includes a cylindrical shell having first and second portions circumferentially and adjustably disposed about at least the second region of the first rod and the first region of the second rod. First packings include a plurality of stacked annular seals mounted in the first portion of the cylindrical shell of the packing sleeve, such that the inner surfaces of the seals are in slidable and sealable contact with the outer surface of the first rod. Second packings include a plurality of stacked annular seals mounted between the first and second portions of the shell of the packing sleeve, such that the inner surfaces of the seals of the second packings are in slidable and sealable contact with the outer surface of the second rod. A packing nut assembly may be mounted at one end of the outer cylinder. Adjustment of the packing nut assembly displaces the packing sleeve, thereby compressing the first and second packings.
REFERENCES:
patent: 1584843 (1926-05-01), Carroll
patent: 1595401 (1926-08-01), Humason
patent: 1817095 (1931-08-01), Pewick et al.
patent: 2837898 (1958-06-01), Ahlstrand
patent: 3184124 (1965-05-01), Beck
patent: 4646580 (1987-03-01), Dunn
Binks Manufacturing Company
Denion Thomas E.
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