CA2189608A1 - Pressure switch with increased deadband - Google Patents

Pressure switch with increased deadband

Info

Publication number
CA2189608A1
CA2189608A1 CA 2189608 CA2189608A CA2189608A1 CA 2189608 A1 CA2189608 A1 CA 2189608A1 CA 2189608 CA2189608 CA 2189608 CA 2189608 A CA2189608 A CA 2189608A CA 2189608 A1 CA2189608 A1 CA 2189608A1
Authority
CA
Canada
Prior art keywords
housing
rod
movement
spring
bore
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.)
Granted
Application number
CA 2189608
Other languages
French (fr)
Other versions
CA2189608C (en
Inventor
James Richard Ellett
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.)
Argus Machine Co Ltd
Original Assignee
Argus Machine Co Ltd
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 Argus Machine Co Ltd filed Critical Argus Machine Co Ltd
Priority to CA 2189608 priority Critical patent/CA2189608C/en
Publication of CA2189608A1 publication Critical patent/CA2189608A1/en
Application granted granted Critical
Publication of CA2189608C publication Critical patent/CA2189608C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

A pressure switch has a housing with an interior bore extending from one end to the other. A rod slidable within the bore and operated by external fluid pressure extends between a piston at one end of the housing and a mechanically operated electrical switch at the other end of the housing. A spring is disposed about the rod between a first stop on the rod and a second stop on the housing. The spring provides resistance against movement of the rod under external pressure. The resistance of the spring to movement is adjusted by a sleeve engaging the spring, with the sleeve threaded into the bore of the housing for movement longitudinally within the housing. A split ring wedged between two other rings resists movement of the rod to longitudinal movement.
CA 2189608 1996-11-05 1996-11-05 Pressure switch with increased deadband Expired - Lifetime CA2189608C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2189608 CA2189608C (en) 1996-11-05 1996-11-05 Pressure switch with increased deadband

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2189608 CA2189608C (en) 1996-11-05 1996-11-05 Pressure switch with increased deadband

Publications (2)

Publication Number Publication Date
CA2189608A1 true CA2189608A1 (en) 1998-05-05
CA2189608C CA2189608C (en) 2004-02-24

Family

ID=4159206

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2189608 Expired - Lifetime CA2189608C (en) 1996-11-05 1996-11-05 Pressure switch with increased deadband

Country Status (1)

Country Link
CA (1) CA2189608C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8431848B2 (en) 2010-08-25 2013-04-30 Argus Machine Co., Ltd. Pressure switch

Also Published As

Publication number Publication date
CA2189608C (en) 2004-02-24

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20161107