GB1436916A - Part eg a cover glass for a timepiece - Google Patents

Part eg a cover glass for a timepiece

Info

Publication number
GB1436916A
GB1436916A GB1952574A GB1952574A GB1436916A GB 1436916 A GB1436916 A GB 1436916A GB 1952574 A GB1952574 A GB 1952574A GB 1952574 A GB1952574 A GB 1952574A GB 1436916 A GB1436916 A GB 1436916A
Authority
GB
United Kingdom
Prior art keywords
glass
base
refractive index
layer
timepiece
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
GB1952574A
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB1436916A publication Critical patent/GB1436916A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

1436916 Watches SUWA SEIKOSHA KK 3 May 1974 [17 May 1973] 19525/74 Heading G3T [Also in Division B2] A watch part such as a glass 20 comprises a base 10 of organic or inorganic glass with a layer 30 having a refractive index higher than that of the base to give a more decorative appearance, at least 5% of the incident light being transmitted through the part. The part may alternatively be a dial, a case band, or a liquid crystal display cover panel. As described the base 10 is of a borosilicate glass with a refractive index of 1À5 and may be coloured. The layer 30 is of a metallic resinate and formed by spraying and calcining. It is 400-500 Š thick so that interference effects are also produced. A number of materials and designs are suggested, including the use of .... several superposed layers 30 and inclined surfaces or facets (40), Fig. 3 (not shown) on the glass.
GB1952574A 1973-05-17 1974-05-03 Part eg a cover glass for a timepiece Expired GB1436916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5405973A JPS504106A (en) 1973-05-17 1973-05-17

Publications (1)

Publication Number Publication Date
GB1436916A true GB1436916A (en) 1976-05-26

Family

ID=12960029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1952574A Expired GB1436916A (en) 1973-05-17 1974-05-03 Part eg a cover glass for a timepiece

Country Status (3)

Country Link
JP (1) JPS504106A (en)
FR (1) FR2230005B1 (en)
GB (1) GB1436916A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4343451A1 (en) * 2022-09-22 2024-03-27 Casio Computer Co., Ltd. Electronic device and watch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3371823D1 (en) * 1983-01-25 1987-07-02 Bloesch W Ag Decorated glass face for a measuring instrument, particularly a wrist watch, and method for its manufacture

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH339575A (en) * 1955-04-06 1959-06-30 Heraeus Gmbh W C Method for producing corrosion protection on a watch
DE1244345B (en) * 1964-03-13 1967-07-13 Jenaer Glaswerk Schott & Gen Method of bending glass sheets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4343451A1 (en) * 2022-09-22 2024-03-27 Casio Computer Co., Ltd. Electronic device and watch

Also Published As

Publication number Publication date
JPS504106A (en) 1975-01-17
FR2230005B1 (en) 1978-03-31
FR2230005A1 (en) 1974-12-13

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee