CH560414A - Watertight wrist watch case - is produced simply by shrinking sintered metal frame around homogeneous metal sleeve - Google Patents

Watertight wrist watch case - is produced simply by shrinking sintered metal frame around homogeneous metal sleeve

Info

Publication number
CH560414A
CH560414A CH1140472A CH1140472A CH560414A CH 560414 A CH560414 A CH 560414A CH 1140472 A CH1140472 A CH 1140472A CH 1140472 A CH1140472 A CH 1140472A CH 560414 A CH560414 A CH 560414A
Authority
CH
Switzerland
Prior art keywords
moulding
wrist watch
watch case
shrinking
frame around
Prior art date
Application number
CH1140472A
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 filed Critical
Priority to CH1140472A priority Critical patent/CH560414A/en
Priority to CH1140472D priority patent/CH1140472A4/xx
Publication of CH560414A publication Critical patent/CH560414A/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0074—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment
    • G04D3/0097—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment for components of the means protecting the mechanism against external influences, e.g. cases
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

A watertight wrist watch case can be produced by simple and cost saving means. A moulding of sintered metal acts as the case frame for a bush of homogeneous metal. The metal of the moulding can be stainless steel, chrome nickel steel, brass or bronze, with sintered particles of spherical or spattered shape. Cohesion is achieved by the shrinkage of the moulding during sintering. If shrinkage forces alone are not adequate, annular grooves and mating collars can be provided. The case itself can have relatively thin walls since the strength of the frame arises from the moulding.
CH1140472A 1972-08-01 1972-08-01 Watertight wrist watch case - is produced simply by shrinking sintered metal frame around homogeneous metal sleeve CH560414A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH1140472A CH560414A (en) 1972-08-01 1972-08-01 Watertight wrist watch case - is produced simply by shrinking sintered metal frame around homogeneous metal sleeve
CH1140472D CH1140472A4 (en) 1972-08-01 1972-08-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1140472A CH560414A (en) 1972-08-01 1972-08-01 Watertight wrist watch case - is produced simply by shrinking sintered metal frame around homogeneous metal sleeve

Publications (1)

Publication Number Publication Date
CH560414A true CH560414A (en) 1975-03-27

Family

ID=4373173

Family Applications (2)

Application Number Title Priority Date Filing Date
CH1140472A CH560414A (en) 1972-08-01 1972-08-01 Watertight wrist watch case - is produced simply by shrinking sintered metal frame around homogeneous metal sleeve
CH1140472D CH1140472A4 (en) 1972-08-01 1972-08-01

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH1140472D CH1140472A4 (en) 1972-08-01 1972-08-01

Country Status (1)

Country Link
CH (2) CH560414A (en)

Also Published As

Publication number Publication date
CH1140472A4 (en) 1974-10-31

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