Seal arrangement for use in a press assembly

Details Seal arrangement for use in a press assembly Seal arrangement for use in a press assembly

1990-05-09

1991-04-16

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

92 86, 267119, B21D 2408

Patent

active

050072765

ABSTRACT:
An improved seal arrangement is used in a cushion assembly of a press. The seal arrangement includes a high pressure piston seal assembly which is connected with a piston and is disposed in sealing engagement with a cylinder of the cushion assembly. The high pressure piston seal assembly blocks fluid flow between upper and lower variable volume chambers of the cushion assembly. A high pressure cylinder seal assembly is disposed in sealing engagement with a piston rod and the cylinder to block fluid flow from the upper variable volume chamber along the piston rod. An outer low pressure seal assembly is also provided between the piston rod and cylinder to block contaminants from entering the cylinder from the surrounding environment. A low pressure leak down chamber is provided between the high pressure cylinder seal assembly and the low pressure seal assembly. A pressure relief valve assembly is operable to exhaust fluid pressure from the leak down chamber to prevent exposure of the low pressure seal assembly to excessive fluid pressures during operation of the press.

REFERENCES:
patent: 3202411 (1965-08-01), Heiser
patent: 3293994 (1966-12-01), Napolitano
patent: 4342448 (1982-08-01), Wallis
patent: 4447047 (1984-05-01), Newell
patent: 4667472 (1987-05-01), Clay et al.
patent: 4765227 (1988-08-01), Balazs et al.

Affiliated with

Also associated with

Rating

Seal arrangement for use in a press assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seal arrangement for use in a press assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seal arrangement for use in a press assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-413593