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US 4,057,257 AGranted
Seal assembly
AssigneeTol-O-Matic, Inc.
InventorDavid W. Berg
Life of this patent
Estimating the term…
Abstract
A seal assembly for use in a cable cylinder to form an effective seal about a generally cylindrical cable section. The seal assembly includes first and second seal retaining member disposed on opposite sides of a seal element, all of which are disposed within a cylindrical bore of a gland member. The cylindrical bore includes a shoulder portion to retain one of the retaining members and a groove to retain the other for easy insertion and removal thereof.
Claims10
A seal assembly for use in a cable cylinder to form an effective seal about a generally cylindrical cable, said seal assembly comprising:
- a first generally disc shaped seal retaining member having a center opening extending around said generally cylindrical cable;
- a second generally disc shaped seal retaining member having a center opening extending around said generally cylindrical cable;
- a gland having a generally cylindrical bore extending around said generally cylindrical cable, a shoulder portion extending radially inwardly from said cylindrical bore near one end thereof for engagement by said first generally disc shaped seal retaining member and an inner groove near the other end of said cylindrical bore for engagement by said second generally disc shaped retaining member, said gland including an inner retaining lip adjacent to said inner groove and on the opposite side of said inner groove as said cylindrical bore for retaining said second disc shaped seal retaining member within said groove and one of said gland and said second disc shaped seal retaining member including means enabling said second seal retaining member to be manually urged past said inner retaining lip for seating within said groove;
- a seal member disposed within the cylindrical bore of said gland and between said first and second retaining members for forming an effective seal with the inner surface of said cylindical bore and the outer surface of said generally cylindrical cable.
1 more element
A cable cylinder comprising:
- a cylinder;
- a piston disposed within said cylinder and defining at least one hydraulic chamber;
- a generally cylindrical cable connected with said piston and extending through said hydraulic chamber;
- and
- a seal assembly for forming an effective seal about said cylindrical cable comprising;
- a first generally disc shaped seal retaining member having a center opening extending around said generally cylindrical cable;
- a second generally disc shaped seal retaining member having a center opening extending around said generally cylindrical cable;
- a gland having a generally cylindrical bore extending around said generally cylindrical cable, a shoulder portion extending radially inwardly from said cylindrical bore near one end thereof for engagement by said first generally disc shaped seal retaining member and an inner groove near the other end of said cylindrical bore for engagement by said second generally disc shaped retaining member, said gland including an inner retaining lip adjacent to said inner groove and on the opposite side of said inner groove as said cylindrical bore for retaining said second disc shaped seal retaining member within said groove and one of said gland and said second disc shaped seal retaining member including means enabling said second seal retaining member to be manually urged past said inner retaining lip for seating within said groove;
- a seal member disposed within the cylindrical bore of said gland and between said first and second retaining members for forming an effective seal with the inner surface of said cylindrical bore and the outer surface of said generally cylindrical cable.
6 more elements
Dependencies are inferred from the claim text.