Sealing piston

Details Sealing piston Sealing piston

1977-12-16

1979-01-23

Whitehead, Harold D.

Stone working

Sawing

Rotary

51 73R, B28D 104

Patent

active

041354990

ABSTRACT:
In an apparatus for clamping and uniformly tensioning an inside diameter cutting blade, hydraulic fluid is contained within an annular fluid channel which includes an opening confronting the inside diameter blade. The hydraulic fluid is prevented from contacting the blade by a pressure-transmitting deformable sealing piston mounted within the fluid channel. The sealing piston is generally U-shaped in cross section and includes, in addition to a relatively axially thick main body part, at the sides of the "U", two outwardly directed arms when the piston is not in place within the fluid channel which it seals. When the arms of the piston are brought toward one another for insertion of the piston within the fluid channel, the piston material, which is resilient, urges the arms radially outward thereby forming a good seal with the inner and outer walls of the fluid channel. The inner and outer walls of the fluid channel are generally unbroken as are the radially inner and outer surfaces of the piston thereby permitting relative axial movement between the piston and the fluid channel.

REFERENCES:
patent: 2598609 (1952-05-01), Samuel
patent: 2884292 (1959-04-01), Doner
patent: 3827421 (1974-08-01), Schumacher

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