CH683737GA3 - Testing cases and housings esp. of watch - subjecting sample batch to predetermined pressure for short time and measuring tension release in set periods - Google Patents

Testing cases and housings esp. of watch - subjecting sample batch to predetermined pressure for short time and measuring tension release in set periods

Info

Publication number
CH683737GA3
CH683737GA3 CH2301/92A CH230192A CH683737GA3 CH 683737G A3 CH683737G A3 CH 683737GA3 CH 2301/92 A CH2301/92 A CH 2301/92A CH 230192 A CH230192 A CH 230192A CH 683737G A3 CH683737G A3 CH 683737GA3
Authority
CH
Switzerland
Prior art keywords
short time
esp
housings
watch
predetermined pressure
Prior art date
Application number
CH2301/92A
Other languages
German (de)
Other versions
CH683737B5 (en
Inventor
Viktor Manta
Original Assignee
Witschi Electronic Ag
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 Witschi Electronic Ag filed Critical Witschi Electronic Ag
Priority to CH230192A priority Critical patent/CH683737B5/en
Publication of CH683737GA3 publication Critical patent/CH683737GA3/en
Publication of CH683737B5 publication Critical patent/CH683737B5/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/36—Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested
    • G01M3/363—Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested the structure being removably mounted in a test cell
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/006—Testing apparatus for complete clockworks with regard to external influences or general good working
    • G04D7/007—Testing apparatus for complete clockworks with regard to external influences or general good working with regard to the sealing of the case

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

Deformation of a few samples are registered by a measuring system according to the ISO standard 2281 and stored. The measuring time and intervals are measured in a second stage. Samples of a batch to be tested are then subjected to the stipulated pressure for a short time. The release of tension of the deformation is measured in the predetermined time intervals. As soon as a too large a deviation from the housing graded as good can be detected a judgement can be delivered to categorise as of unsatisfactory quality without the need to carry out a complete testing process. USE/ADVANTAGE - Quality testing of sealing against high and low air pressure conditions. Time and cost saved, making suitable for quality control on prodn. line.
CH230192A 1992-07-14 1992-07-14 Procedures for examining cases. CH683737B5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH230192A CH683737B5 (en) 1992-07-14 1992-07-14 Procedures for examining cases.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH230192A CH683737B5 (en) 1992-07-14 1992-07-14 Procedures for examining cases.

Publications (2)

Publication Number Publication Date
CH683737GA3 true CH683737GA3 (en) 1994-05-13
CH683737B5 CH683737B5 (en) 1994-11-15

Family

ID=4230596

Family Applications (1)

Application Number Title Priority Date Filing Date
CH230192A CH683737B5 (en) 1992-07-14 1992-07-14 Procedures for examining cases.

Country Status (1)

Country Link
CH (1) CH683737B5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983405A (en) * 2014-05-29 2014-08-13 中船重工(重庆)海装风电设备有限公司 Sealing performance detection method and device for pivotal bearing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148466A1 (en) * 1971-08-07 1973-03-23 Fukuda Akira
US3837215A (en) * 1973-05-21 1974-09-24 T Massage Method and apparatus for testing sealed containers
FR2518263A1 (en) * 1981-12-14 1983-06-17 Powers Manufacturing DOUBLE HEAD CALIBRATION APPARATUS WITH AUTOMATIC PRESSURE VARIATION ADJUSTMENT
DE3312963A1 (en) * 1982-04-16 1983-10-27 Greiner Electronics AG, 4900 Langenthal, Bern Method for operating a device for testing the leakproofness of watches and other hollow bodies
US4942758A (en) * 1986-12-04 1990-07-24 Cofield Dennis H High speed leak tester

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148466A1 (en) * 1971-08-07 1973-03-23 Fukuda Akira
US3837215A (en) * 1973-05-21 1974-09-24 T Massage Method and apparatus for testing sealed containers
FR2518263A1 (en) * 1981-12-14 1983-06-17 Powers Manufacturing DOUBLE HEAD CALIBRATION APPARATUS WITH AUTOMATIC PRESSURE VARIATION ADJUSTMENT
DE3312963A1 (en) * 1982-04-16 1983-10-27 Greiner Electronics AG, 4900 Langenthal, Bern Method for operating a device for testing the leakproofness of watches and other hollow bodies
US4942758A (en) * 1986-12-04 1990-07-24 Cofield Dennis H High speed leak tester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983405A (en) * 2014-05-29 2014-08-13 中船重工(重庆)海装风电设备有限公司 Sealing performance detection method and device for pivotal bearing
CN103983405B (en) * 2014-05-29 2016-08-24 中船重工(重庆)海装风电设备有限公司 The sealing property detecting method of floating bearing and sealing property detection device

Also Published As

Publication number Publication date
CH683737B5 (en) 1994-11-15

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Legal Events

Date Code Title Description
PL Patent ceased