GB689644A - Improvements in seals - Google Patents

Improvements in seals

Info

Publication number
GB689644A
GB689644A GB17079/50A GB1707950A GB689644A GB 689644 A GB689644 A GB 689644A GB 17079/50 A GB17079/50 A GB 17079/50A GB 1707950 A GB1707950 A GB 1707950A GB 689644 A GB689644 A GB 689644A
Authority
GB
United Kingdom
Prior art keywords
sintered
graphitized
coal dust
valves
seals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB17079/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FRIED KRUPP ZECHEN HANNOVER UN
Original Assignee
FRIED KRUPP ZECHEN HANNOVER UN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FRIED KRUPP ZECHEN HANNOVER UN filed Critical FRIED KRUPP ZECHEN HANNOVER UN
Publication of GB689644A publication Critical patent/GB689644A/en
Expired legal-status Critical Current

Links

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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating members
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/062—Construction of housing; Use of materials therefor of taps or cocks with conical plugs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)
  • Sealing Material Composition (AREA)

Abstract

Rings, sleeves, cones, liners, and like mechanical elements, e.g. valves, pistons, shafts, rods, or slide valves with sealing surfaces which make close contact and form fluid-tight seals with other surfaces have a surface of sintered and graphitized coal dust contacting a surface of another material. The coal dust having a particle size not greater than 0.08 mm., which may be mixed with a binder, e.g. tar or pitch, or with a lubricant, e.g. water or mineral oil, is pressed to shape at 500-3000 kg./cm.2 and sintered at 700-1200 DEG C. The product is graphitized at more than 2000 DEG C.
GB17079/50A 1949-07-09 1950-07-07 Improvements in seals Expired GB689644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE689644X 1949-07-09

Publications (1)

Publication Number Publication Date
GB689644A true GB689644A (en) 1953-04-01

Family

ID=6598762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17079/50A Expired GB689644A (en) 1949-07-09 1950-07-07 Improvements in seals

Country Status (1)

Country Link
GB (1) GB689644A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115087B (en) * 1954-10-30 1961-10-12 Emil Zehnder Cock with conical plug and plastic sleeve between housing and plug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115087B (en) * 1954-10-30 1961-10-12 Emil Zehnder Cock with conical plug and plastic sleeve between housing and plug

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