Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/16—Sealings between relatively-moving surfaces
  • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/02—Sealings between relatively-stationary surfaces
  • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
  • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material

Definitions

• the present invention relates to a sealing ring of tiia composite type.
• a seal usually is provided around ' the passage in the interface between the elements by means of a sealing ring, usually a 0-ring of an elastomer, which is located in an enlargement of the passage in one element.
• the purpose of the invention is to solve the problem in a simple manner without structural modifica- tions of one or the other of the two elements, and this is achieved according to the invention by a sealing ring of the composite type having the characteristics appearing from claim 1. Then, it is the sealing ring of the composite type itself which is constructed such 5 that said disadvantage cannot arise. No modification of the two elements is necessary; the sealing ring of the composite type can be mounted as any other sealing ring in the conventional enlargement of the passage in one element.
• a conventional 0-ring of an elastomer is used as a separate element in combination with the support ring.
• FIG. 1 is a fragmentary cross-sectional view of 10 • two machi-ne elements forming a through passage and being provided with the sealing ring of the composite type according to the invention
• FIG. 2 is an enlarged cross-sectional view of the sealing ring
• 15 FIG. 3 is a plan view of the sealing ring in FIG. 2.
• a passage 12 extends through the two machine elements and can form part of a hydraulic system.
• an enlargement 14 of the passage 12 is provided in the element 10, said enlargement being open in the surface of the element 10, 25 which engages the element 11 at the interface 13.
• a sealing ring of the composite type according to the invention is located in the enlargement 14 and comprises a conventional 0-ring 15 of an elastomer, e.g. rubber, having circular cross-sectional shape, and a rigid 30 support ring 16 of metal or plastic material , forming an outside groove.
• the 0-ring is disposed on the outside of the support ring and is received by the outside groove of the support ring, which is curved according to the circular shape of the 0-ring. In other words, 35 the arrangement is similar to a wheel tyre disposed on the outside of a wheel rim.
• the support ring 16 has a smaller axial dimension than the 0-ring 15 in order that the 0-ring will be slightly compressed between the two machine elements 10 and 11 without this being obstructed by the support ring 16.
• the 0-ring 15 can be of a common standard embodiment and can be located and arranged in the same manner as such a standard ring without being obstructed by the support ring 16 which is a very simple element incre-asing the cost of the sealing ring insignificantly but preventing effectively the 0-ring 15 from leaving the enlargement 14.
• the 0-ring can fit loosely on the support ring but there is nothing to prevent it these two rings being permanently interconnected in one way or the other. Either the rings are interconnected or not they can be handled as a ' unit.
• the support ring 16 can have the. same axial length as the 0-ring 15 but in that case through apertures should be provided in the support ring between the inside and outside surfaces thereof in order that pressurized hydraulic fluid in the passage 12 can affect the 0-ring and compress said ring so as to engage sealingly the elements 10 and 11, and in order that pressurized fluid will not be trapped between the 0-ring and the support ring.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Gasket Seals (AREA)
• Sealing Material Composition (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Silicon Polymers (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20354501

Family Applications (1)

Country Status (7)

Cited By (5)

Citations (4)

• 1984
  • 1984-01-30 SE SE8400438A patent/SE441210B/sv not_active IP Right Cessation
• 1985
  • 1985-01-28 DE DE8585900809T patent/DE3567712D1/de not_active Expired
  • 1985-01-28 WO PCT/SE1985/000032 patent/WO1985003334A1/en not_active Application Discontinuation
  • 1985-01-28 AU AU38854/85A patent/AU3885485A/en not_active Abandoned
  • 1985-01-28 AT AT85900809T patent/ATE40192T1/de not_active IP Right Cessation
  • 1985-01-28 JP JP85500597A patent/JPS61501412A/ja active Pending
  • 1985-01-28 EP EP85900809A patent/EP0172189B1/en not_active Expired

Patent Citations (4)

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