Sealing arrangement
First Claim
1. A sealing arrangement for a piston rod with a circular cross-section, comprising a one-piece sealing ring with a parting joint and compensation clearance as well as a cover ring surrounding or enclosing the sealing ring in the peripheral direction, with the sealing ring having a section which extends in the peripheral direction of the sealing ring at least at one end and forms an overlapping ring joint together with another end of the sealing ring, and with the sealing ring having a radial wall thickness which decreases towards the parting joint;
- wherein the sealing ring has at its radially outer surface a recess extending along the circumference of the sealing ring, the cover ring fitting in the recess and a sealing surface which is a radially inner surface of the sealing ring.
1 Assignment
0 Petitions
Accused Products
Abstract
Sealing arrangement for a piston rod with a circular cross-section, comprising a one-piece sealing ring with a parting joint and compensation clearance as well as a cover ring surrounding the sealing ring in the peripheral direction, with the sealing ring having a section which extends in the peripheral direction of the sealing ring at at one end and forms an overlapping ring joint together with the other end of the sealing ring, and with the sealing ring having a radial wall thickness decreasing towards the parting joint. This arrangement has an excellent sealing action in a direction axial to the arrangement.
31 Citations
13 Claims
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1. A sealing arrangement for a piston rod with a circular cross-section, comprising a one-piece sealing ring with a parting joint and compensation clearance as well as a cover ring surrounding or enclosing the sealing ring in the peripheral direction, with the sealing ring having a section which extends in the peripheral direction of the sealing ring at least at one end and forms an overlapping ring joint together with another end of the sealing ring, and with the sealing ring having a radial wall thickness which decreases towards the parting joint;
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wherein the sealing ring has at its radially outer surface a recess extending along the circumference of the sealing ring, the cover ring fitting in the recess and a sealing surface which is a radially inner surface of the sealing ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
times pi times B.
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8. A sealing arrangement in accordance with claim 5 wherein a plurality of webs are arranged distributed along an inner surface in the peripheral direction.
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9. A sealing arrangement in accordance with claim 1 wherein the sealing ring is manufactured of one of a plastic or a modified high temperature polymer.
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10. A sealing arrangement in accordance with claim 9 wherein the sealing ring is manufactured of one of polytetrafluoroethylene (PTFE), poly(ether ether ketone) (PEEK), poly(ether ketone) (PEK), polyimide (PI), poly(phenylene sulphide) (PPS), polybenzimidazole (PBI), or polyamideimide (PAI).
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11. A sealing arrangement in accordance with claim 1 wherein the covering is surrounded by a spring lying on the cover ring and extending in the peripheral direction of the sealing ring.
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12. A packing for sealing a piston rod with sealing arrangements that comprise:
a one-piece sealing ring with a parting joint and compensation clearance as well as a cover ring surrounding or enclosing the sealing ring in the peripheral direction, with the sealing ring having a section which extends in the peripheral direction of the sealing ring at least at one end and forms an overlapping ring joint together with another end of the sealing ring, and with the sealing ring having a radial wall thickness which decreases towards the parting joint wherein the sealing ring has at its radially outer surface a recess extending along the circumference of the sealing ring, the cover ring fitting in the recess.
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13. A piston compressor with a sealing arrangement comprising:
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a packing for sealing a piston rod with sealing arrangements that comprise;
a one-piece sealing ring with a parting joint and compensation clearance as well as a cover ring surrounding or enclosing the sealing ring in the peripheral direction, with the sealing ring having a section which extends in the peripheral direction of the sealing ring at least at one end and forms an overlapping ring joint together with another end of the sealing ring, and with the sealing ring having a radial wall thickness which decreases towards the parting joint wherein the sealing ring has at its radially outer surface a recess extending along the circumference of the sealing ring, the cover ring fitting in the recess.
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Specification