Sealing ring disk

• US 6,045,135 A
• Filed: 12/11/1997
• Issued: 04/04/2000
• Est. Priority Date: 06/14/1995
• Status: Expired due to Fees

• Current Assignee: Maschinenfabrik Sulzer-Burckhardt AG
• Original Assignee: Maschinenfabrik Sulzer-Burckhardt AG
• Inventors: Feistel, Norbert
• Primary Examiner(s): Knight, Anthony
• Assistant Examiner(s): Pickard, Alison K.
• Application Number:
  US08/981,164
• Time in Patent Office: 845 Days
• Field of Search: 277/435, 277/946, 277/446, 277/447, 277/448, 277/489, 277/490, 277/491
• US Class Current: 277/434
• CPC Class Codes: F16J 15/26 with stuffing-boxes for rigid sealing rings
• CPC Class Codes: F16J 9/16 obtained by stacking of rings
• CPC Class Codes: Y10S 277/946 PTFE

Abstract

A sealing ring disk for a seal at a piston rod with a circular cross-section. The sealing ring disk includes a ring-shaped seal part with a sector-like cut-out as well as a closure part having a main part matched to the cut-out in such a manner that the main part extending in the peripheral direction of the seal part can be inserted into the cut-out in order to assemble the two parts into a single sealing ring disk.

Claims

1. A sealing ring disk comprising:

a single ring-shaped seal part having a sector-like cut-out;

an inward-facing sealing surface; and

a closure part having a main part with an inward-facing surface;

wherein said main part of the closure part is matched to the cut-out in such a manner that the main part extending in the peripheral direction of the seal part is insertable into the seal part such that the main part covers the cut-out in order to assemble the seal part and the closure part to a single sealing ring disk with a sealing surface consisting of the sealing surface of the seal part and the inward facing surface of the main part of the closure part.

2. A sealing ring disk in accordance with claim 1 wherein the main part lies partially on the seal part in a direction normal to a plane spanned by the seal part.

3. A sealing ring disk in accordance with claim 1 wherein the seal part has a primary part that terminates in two end parts, with the end parts being made thinner in the normal direction than the primary part;

and wherein the main part lies on the end parts in the normal direction.

4. A sealing ring disk in accordance with claim 1 wherein the seal part has resilient properties;

and wherein the main part and the seal part have a mutual clearance in the peripheral direction.

5. A sealing ring disk in accordance with claim 1 wherein the closure part has end parts going out from the main part at both ends;

and wherein the end parts lie on the seal part partially encompassing it.

6. A sealing ring disk in accordance with claim 5 wherein the closure part has resilient properties.

7. A sealing ring disk in accordance with claim 1 wherein the seal part is executed in L-shape, with a broad side forming a sealing surface oriented toward the piston rod.

8. A sealing ring disk in accordance with claim 1 wherein the sealing ring disk has a metallic enclosure ring.

9. A sealing ring disk in accordance with claim 1 wherein the seal part has a thickness in the radial direction which decreases towards the sector-like cut-out.

10. A sealing ring disk in accordance with claim 1 wherein the seal part has an axial formation eccentric to the piston rod and wherein the closure part has an eccentric cut-out complementary thereto.

11. A sealing ring disk in accordance with claim 1 wherein at least one of the seal part and the closure part consists of one of a plastic, a modified high-temperature polymer or a modified epoxy resin.

12. A piston compressor that includes a sealing ring disk, the sealing ring disk comprising:

a single ring-shaped seal part having a sector-like cut-out;

an inward-facing sealing surface; and

a closure part having a main part with an inward-facing surface;

wherein said main part of the closure part is matched to the cut-out in such a manner that the main part extending in the peripheral direction of the seal part is insertable into the seal part such that the main part covers the cut-out in order to assemble the seal part and the closure part to a single sealing ring disk with a sealing surface consisting of the sealing surface of the seal part and the inward facing surface of the main part of the closure part.