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US 2026/0201953 A1Published application
Lip seals and related methods
AssigneeBal Seal Engineering, Inc.
InventorsFarshid Dilmaghanian, Miquel Balta, Calvin Wong, Constantijn van de Pas
Life of this patent
Estimating the term…
Abstract
Seal assemblies and systems and their components can be used as pre-packaged seals when installed in a cylinder or cartridge. The seal assemblies have can include restrictor blocks to restrict fluid flow. Sealing washers can be included to add sealing points. In a pre-packaged configuration, the cylinder can be a straight cylinder, a stepped cylinder, or a split cylinder.
Claims16
A seal system comprising:
- a cylinder having a body with a first end with a retaining wall, a second end, an inside surface defining a bore, and a lengthwise axis;
- a first seal assembly located in the bore and comprising:
- a first locking ring having body with a first deck having an outside surface with a notch, an inside surface with a notch, an inner flange extension, an outer flange extension, and wherein notch at the inside surface comprises a V-shaped bottom or a flat bottom;
- a first seal element attached to the first locking ring, the first seal element having an inside flange with a free end, an outside flange with a free end, and a center channel section connected to the inside and outside flanges and together defining a first seal cavity, wherein the outside flange comprising an extended lip located in the notch at the outside surface of the first deck;
- a first spring comprising a canted coil spring comprising a plurality of interconnected coils located in the notch of the inside surface of the first deck and the first seal cavity of the first seal element and biasing against the notch and the inside flange;
- a second seal assembly located in the bore and comprising:
- a second locking ring having body with a second deck having an outside surface with a notch, an inside surface with a notch, an inner flange extension, an outer flange extension, and wherein notch at the inside surface comprises a V-shaped bottom or a flat bottom;
- a second seal element attached to the second locking ring, the second seal element having an inside flange with a free end, an outside flange with a free end, and a center channel section located therebetween and defining a second seal cavity, wherein the outside flange comprising an extended lip located in the notch at the outside surface of the second deck;
- a second spring comprising a canted coil spring comprising a plurality of interconnected coils located in the notch of the inside surface of the second deck and the second seal cavity and biasing against the notch and the inside flange;
- a sealing washer having a body with a first surface, an opposed second surface, an outside diameter (OD), and an inside diameter (ID), and wherein the body of the sealing washer contacts both the retaining wall and the first locking ring or contacts both the retaining wall and the first seal element;
- and
- wherein the free ends of the first seal element and the free ends of the second seal element point in a same direction.
9 more elements
A seal system comprising:
- a cylinder having a body with a first end, a second end, an inside surface defining a bore, a lengthwise axis, and a retaining wall at the first end;
- a first seal assembly located in the bore and comprising:
- a first locking ring having body with a first deck having an outside surface with a notch, an inside surface, a first deck thickness measured between the notch at the outside surface and the inside surface, and a ring extension extending towards the retaining wall, the ring extension defining a cylinder having an OD and an ID;
- a first seal element attached to the first locking ring, the first seal element having an inside flange with a free end, an outside flange with a free end, and a center channel section connected to the inside and outside flanges and together defining a first seal cavity, wherein the outside flange comprising an extended lip located in the notch at the outside surface of the first deck;
- a first spring comprising a canted coil spring comprising a plurality of interconnected coils located in the first seal cavity of the first seal element and biasing against the inside surface of the first deck and the inside flange;
- a second spring comprising a canted coil spring comprising a plurality of interconnected coils located in the first seal cavity adjacent the first spring and biasing against the inside surface of the first deck and the inside flange;
- a first sealing washer comprising an OD and an ID and in contact with the retaining wall;
- and
- a second sealing washer comprising an OD and an ID and in contact with the first locking ring.
6 more elements
A method of assembling a seal system comprising:
- inserting a first seal assembly and a second seal assembly into a cylinder, the cylinder having a body with a first end with a retaining wall, a second end, an inside surface defining a bore, and a lengthwise axis;
- the first seal assembly is located in the bore and comprising:
- a first locking ring having body with a first deck having an outside surface with a notch, an inside surface with a notch, an inner flange extension, an outer flange extension, and wherein notch at the inside surface comprises a V-shaped bottom or a flat bottom;
- a first seal element attached to the first locking ring, the first seal element having an inside flange with a free end, an outside flange with a free end, and a center channel section connected to the inside and outside flanges and together defining a first seal cavity, wherein the outside flange comprising an extended lip located in the notch at the outside surface of the first deck;
- a first spring comprising a canted coil spring comprising a plurality of interconnected coils located in the notch of the inside surface of the first deck and the first seal cavity of the first seal element and biasing against the notch and the inside flange;
- the second seal assembly located in the bore and comprising:
- a second locking ring having body with a second deck having an outside surface with a notch, an inside surface with a notch, an inner flange extension, an outer flange extension, and wherein notch at the inside surface comprises a V-shaped bottom or a flat bottom;
- a second seal element attached to the second locking ring, the second seal element having an inside flange with a free end, an outside flange with a free end, and a center channel section located therebetween and defining a second seal cavity, wherein the outside flange comprising an extended lip located in the notch at the outside surface of the second deck;
- a second spring comprising a canted coil spring comprising a plurality of interconnected coils located in the notch of the inside surface of the second deck and the second seal cavity and biasing against the notch and the inside flange;
- placing a sealing washer into the bore of the cylinder, the sealing washer having a body with a first surface, an opposed second surface, an outside diameter (OD), and an inside diameter (ID), and wherein the body of the sealing washer contacts both the retaining wall and the first locking ring;
- and
- wherein the free ends of the first seal element and the free ends of the second seal element point in a same direction.
9 more elements
Dependencies are inferred from the claim text.