FR2270567A1 - Variable capacitance load cell - has two variable spacing sets of capacitor plates with respective spacer rings - Google Patents

Variable capacitance load cell - has two variable spacing sets of capacitor plates with respective spacer rings

Info

Publication number
FR2270567A1
FR2270567A1 FR7407185A FR7407185A FR2270567A1 FR 2270567 A1 FR2270567 A1 FR 2270567A1 FR 7407185 A FR7407185 A FR 7407185A FR 7407185 A FR7407185 A FR 7407185A FR 2270567 A1 FR2270567 A1 FR 2270567A1
Authority
FR
France
Prior art keywords
rings
variable
load cell
discs
cell
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.)
Withdrawn
Application number
FR7407185A
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.)
MISSIOUX JEAN FR
Original Assignee
MISSIOUX JEAN FR
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 MISSIOUX JEAN FR filed Critical MISSIOUX JEAN FR
Priority to FR7407185A priority Critical patent/FR2270567A1/en
Publication of FR2270567A1 publication Critical patent/FR2270567A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
    • G01G19/18—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads having electrical weight-sensitive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G7/00—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups
    • G01G7/06—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electrostatic action
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
    • G01L5/103—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using sensors fixed at one end of the flexible member

Abstract

The capacitive load cell has a cylindrical case and an axial rod whose displacement is proportional to an applied load. A series of concentrically grooved discs (12) spaced apart by rings (14) are interposed between a series of concentrically grooved rings (16) spaced apart by rings (18). The discs (12) and the rings (16) function as plates of a variable capacitor such that the raised portions of the discs (12) penetrate into the grooves of the rings (16). The cell has two metal spring diaphragms, which may be plane or corrugated, situated at each end of the cell to provide axial displacement only of the moving armatures (12). A set of additional springs is used to obtain additional axial restraint when measurement of higher loads is required.
FR7407185A 1974-03-04 1974-03-04 Variable capacitance load cell - has two variable spacing sets of capacitor plates with respective spacer rings Withdrawn FR2270567A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7407185A FR2270567A1 (en) 1974-03-04 1974-03-04 Variable capacitance load cell - has two variable spacing sets of capacitor plates with respective spacer rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7407185A FR2270567A1 (en) 1974-03-04 1974-03-04 Variable capacitance load cell - has two variable spacing sets of capacitor plates with respective spacer rings

Publications (1)

Publication Number Publication Date
FR2270567A1 true FR2270567A1 (en) 1975-12-05

Family

ID=9135739

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407185A Withdrawn FR2270567A1 (en) 1974-03-04 1974-03-04 Variable capacitance load cell - has two variable spacing sets of capacitor plates with respective spacer rings

Country Status (1)

Country Link
FR (1) FR2270567A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237989A (en) * 1979-05-11 1980-12-09 National Controls, Inc. Capacitive load cell and method of manufacture
FR2459462A1 (en) * 1979-06-18 1981-01-09 Testut Aequitas Diaphragm dynamometer for measurement of applied force - has axial guide assembly with capacitive sensor on load shaft
EP0057100A2 (en) * 1981-01-26 1982-08-04 Deere & Company Tension load transducer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237989A (en) * 1979-05-11 1980-12-09 National Controls, Inc. Capacitive load cell and method of manufacture
FR2459462A1 (en) * 1979-06-18 1981-01-09 Testut Aequitas Diaphragm dynamometer for measurement of applied force - has axial guide assembly with capacitive sensor on load shaft
EP0057100A2 (en) * 1981-01-26 1982-08-04 Deere & Company Tension load transducer
EP0057100A3 (en) * 1981-01-26 1982-08-18 Deere & Company Tension load transducer

Similar Documents

Publication Publication Date Title
Davis et al. The analysis of piled raft systems
US3859575A (en) Variable capacitance sensor
ES425722A1 (en) Leaf spring
US3226981A (en) Condition responsive signal generator for producing a variable frequency signal
FR2270567A1 (en) Variable capacitance load cell - has two variable spacing sets of capacitor plates with respective spacer rings
FR2257822A1 (en) Cylindrical tension-compression spring - has cylindrical sections joined axially by spacers
GB1353941A (en) Transducers for measurement of load forces
GB1418157A (en) Resilient members
GB1126117A (en) Improvements in or relating to devices for supporting workpieces
US3085744A (en) Automatically balanced weighbeam systems
US3277720A (en) Pressure sensor
SU473071A1 (en) Pressure sensor
JPS56163430A (en) Device for transferring pressure
GB824407A (en) Improvements relating to shock-absorbers
Hoff Theory and experiment in the creep buckling of plates and shells
BUCCIARELLI JR Torsional stability of shallow shells of revolution.
SU506066A1 (en) Membrane strain gauge
SU492851A1 (en) Automatic control system
Spain et al. The measurement of pressure and temperature in high pressure systems
US3097524A (en) Load measuring device
SU572599A1 (en) Elastic coupling
MURIN Comments on the dynamic and damping properties of a layered system with dry friction
GB825324A (en) Improvements in or relating to the determination of stresses in the shoring of shafts and the like
O'Keeffe Effects of High Pressure on the Thermal Expansion of Solids with a Linear Us‐up Relationship
JPS57204430A (en) Pressure transmission device

Legal Events

Date Code Title Description
AR Application made for restoration
ST Notification of lapse
BD Lapse confirmed