FR88691E - Method and apparatus for checking the tightness of elements - Google Patents

Method and apparatus for checking the tightness of elements

Info

Publication number
FR88691E
FR88691E FR30091A FR30091A FR88691E FR 88691 E FR88691 E FR 88691E FR 30091 A FR30091 A FR 30091A FR 30091 A FR30091 A FR 30091A FR 88691 E FR88691 E FR 88691E
Authority
FR
France
Prior art keywords
tightness
checking
elements
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
FR30091A
Other languages
French (fr)
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.)
Ajem Laboratories Inc
Original Assignee
Ajem Laboratories Inc
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
Priority claimed from US375515A external-priority patent/US3314283A/en
Priority claimed from US451103A external-priority patent/US3326034A/en
Application filed by Ajem Laboratories Inc filed Critical Ajem Laboratories Inc
Application granted granted Critical
Publication of FR88691E publication Critical patent/FR88691E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
    • G07C3/14—Quality control systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • 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
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
    • G01M3/3263—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers using a differential pressure detector
FR30091A 1964-06-16 1965-09-01 Method and apparatus for checking the tightness of elements Expired FR88691E (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US375515A US3314283A (en) 1964-06-16 1964-06-16 Leak testing method and apparatus
US42474165A 1965-01-11 1965-01-11
US451103A US3326034A (en) 1965-04-23 1965-04-23 Leak testing apparatus

Publications (1)

Publication Number Publication Date
FR88691E true FR88691E (en) 1967-03-10

Family

ID=27409253

Family Applications (2)

Application Number Title Priority Date Filing Date
FR17144A Expired FR1442575A (en) 1964-06-16 1965-05-14 Method and apparatus for checking the tightness of elements
FR30091A Expired FR88691E (en) 1964-06-16 1965-09-01 Method and apparatus for checking the tightness of elements

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR17144A Expired FR1442575A (en) 1964-06-16 1965-05-14 Method and apparatus for checking the tightness of elements

Country Status (6)

Country Link
BE (2) BE663745A (en)
CH (1) CH454491A (en)
DE (2) DE1473670B2 (en)
FR (2) FR1442575A (en)
GB (2) GB1082736A (en)
SE (2) SE317824B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1047349B (en) * 1975-10-07 1980-09-10 Gastaldo R PROCEDURE AND AUTOMATIC DEVICE FOR SEALING CAVITY TEST

Also Published As

Publication number Publication date
DE1473670A1 (en) 1969-03-13
SE318129B (en) 1969-12-01
FR1442575A (en) 1966-06-17
DE1473670B2 (en) 1971-05-13
BE663745A (en) 1965-11-12
DE1473673A1 (en) 1969-11-20
GB1082736A (en) 1967-09-13
GB1121151A (en) 1968-07-24
SE317824B (en) 1969-11-24
CH454491A (en) 1968-04-15
BE668676A (en) 1966-02-23

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