GB670517A - Improvements in or relating to pressure and/or temperature responsive devices - Google Patents

Improvements in or relating to pressure and/or temperature responsive devices

Info

Publication number
GB670517A
GB670517A GB1530349A GB1530349A GB670517A GB 670517 A GB670517 A GB 670517A GB 1530349 A GB1530349 A GB 1530349A GB 1530349 A GB1530349 A GB 1530349A GB 670517 A GB670517 A GB 670517A
Authority
GB
United Kingdom
Prior art keywords
bellows
pressure
liquid
increase
strip
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
GB1530349A
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.)
GASTON MARCEL SAVIGNAT
Original Assignee
GASTON MARCEL SAVIGNAT
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 GASTON MARCEL SAVIGNAT filed Critical GASTON MARCEL SAVIGNAT
Priority to GB1530349A priority Critical patent/GB670517A/en
Publication of GB670517A publication Critical patent/GB670517A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
    • G05D23/121—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid characterised by the sensing element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/0616—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a bellow
    • G05D16/0619—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a bellow acting directly on the obturator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

670,517. Pressure gauges. SAVIGNAT, G. M., and BLONDELLE, R. May 3, 1950 [June 8, 1949], No. 15303/49. Class 106 (ii). [Also in Groups XIII and XX] A pressure-responsive device comprises a sylphon bellows 1 provided with a flexible but non-extensible member 2 which prevents expansion of the bellows along one of its generatrices. The member 2 may be a thin metal blade or strip soldered or welded to all or some of the convolutions of the bellows. One end wall 3, secured by a screw-threaded union 4 and nut 5 to a support 6 is connected by a duct 7 to a reservoir. An increase of pressure in the latter causes the strip 2 to be bent by the bellows in the direction of the arrow 14 and a pin 9 on the end 8 acts on a rod connected to a pointer 11. In a modification for use in indicating temperature (see Group XX) the end 3 of the bellows is sealed and a rise in temperature causes an increase in the pressure of the fluid within the bellows. The amount of bending of the latter is recorded on a revolving drum by a stylus attached to the free end of the bellows. In this embodiment the bellows may contain a liquid and depending upon the degree of filling of the container with the liquid the instrument will be responsive also to variations in the gaseous pressure external thereto. Electric or hydrostatic remote control means may be associated with the device.
GB1530349A 1949-06-08 1949-06-08 Improvements in or relating to pressure and/or temperature responsive devices Expired GB670517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1530349A GB670517A (en) 1949-06-08 1949-06-08 Improvements in or relating to pressure and/or temperature responsive devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1530349A GB670517A (en) 1949-06-08 1949-06-08 Improvements in or relating to pressure and/or temperature responsive devices

Publications (1)

Publication Number Publication Date
GB670517A true GB670517A (en) 1952-04-23

Family

ID=10056681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1530349A Expired GB670517A (en) 1949-06-08 1949-06-08 Improvements in or relating to pressure and/or temperature responsive devices

Country Status (1)

Country Link
GB (1) GB670517A (en)

Similar Documents

Publication Publication Date Title
US2087494A (en) Pressure differential indicator
GB1395106A (en) Explosion proof pressure gauge transducer
GB670517A (en) Improvements in or relating to pressure and/or temperature responsive devices
US3286514A (en) Total pressure transducer
US2365962A (en) Pressure gauge
US1891134A (en) Indicating apparatus
US2927460A (en) Speed indicator for airplanes
US3603153A (en) Direct-acting pressure and vacuum sensor
GB1394980A (en) Overload protected bourdon tube
GB905337A (en) Improvements relating to fluid pressure sensing apparatus
US2300810A (en) Pressure responsive instrument
US1489463A (en) Device operated by variations in air density
GB747613A (en) Improvements in or relating to flow gauges
US3339416A (en) Gauge drive system
GB558194A (en) Improvements in or relating to pneumatic means for the remote indication of a variable
GB1364247A (en) Dry gas meter
GB718153A (en) A fluid pressure responsive unit
GB864295A (en) Hydraulic remote indicating or control apparatus
GB672879A (en) Pressure measuring device
GB597644A (en) Improvements in gauges
US3745826A (en) Differential pressure flow meters
GB1193600A (en) Improvements in and relating to Liquid Level Indicators.
US2440704A (en) Pressure measuring device
GB596993A (en) Compensating system for a condition-responsive measuring instrument
SU494150A1 (en) Device for recording the growth rate of tree trunks in thickness