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GB1386421A - Crash sensing switch - Google Patents

Crash sensing switch

Info

Publication number
GB1386421A
GB1386421A GB736572A GB736572A GB1386421A GB 1386421 A GB1386421 A GB 1386421A GB 736572 A GB736572 A GB 736572A GB 736572 A GB736572 A GB 736572A GB 1386421 A GB1386421 A GB 1386421A
Authority
GB
United Kingdom
Prior art keywords
band
rollers
roller
leaves
guide
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
GB736572A
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.)
Honeywell International Inc
Original Assignee
Allied Chemical Corp
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 Allied Chemical Corp filed Critical Allied Chemical Corp
Publication of GB1386421A publication Critical patent/GB1386421A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/135—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by making use of contacts which are actuated by a movable inertial mass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H01H35/148—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch making use of a rolamite sensor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Push-Button Switches (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

1386421 Inertia switches ALLIED CHEMICAL CORP 17 Feb 1972 [22 Feb 1971] 7365/72 Heading H1N A crash sensing switch comprises a housing 14, rollers 10, 12, guides 16, 18, a flexible spring band 20 held in tension by springs 46, 34 and extending along guides 16, 18 and around rollers 10, 12, switching contacts 32, 38, 42 being operable by movement of rollers 10, 12 off the end of guide surface 18. Under impact, roller 12 rolls off guide 18 on to reset device 52 which when pushed upwards by reset button 54 restores roller 12 to guide 18. Band 20 is of different effective stiffness at the points A, B, where band 20 leaves rollers 10, 12, for producing a net force under normal conditions urging rollers 10, 12 towards one end of band 20 against a stop 50. The difference in stiffness is achieved by cutting a slot in band 20 between points A and A<1>, A<1> being the point at which band 20 leaves roller 10 when the rollers have rolled fully to the right. To adjust the operating force to compensate for different thicknesses of band, part of the slot is tapered exponentially and the position on the taper at which band 20 leaves roller 10 is varied by moving rollers 10, 12 to the right by adjusting stop 50. Formulae are given for calculating the taper. Reference has been directed by the Comptroller to Specifications 1,181,636 and 1,217,947.
GB736572A 1971-02-22 1972-02-17 Crash sensing switch Expired GB1386421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11756071A 1971-02-22 1971-02-22

Publications (1)

Publication Number Publication Date
GB1386421A true GB1386421A (en) 1975-03-05

Family

ID=22373575

Family Applications (2)

Application Number Title Priority Date Filing Date
GB891674A Expired GB1386423A (en) 1971-02-22 1972-02-17 Crash sensing switch
GB736572A Expired GB1386421A (en) 1971-02-22 1972-02-17 Crash sensing switch

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB891674A Expired GB1386423A (en) 1971-02-22 1972-02-17 Crash sensing switch

Country Status (8)

Country Link
US (1) US3688063A (en)
BR (1) BR7200964D0 (en)
CA (1) CA950011A (en)
DE (1) DE2206813A1 (en)
FR (1) FR2126292B1 (en)
GB (2) GB1386423A (en)
IT (1) IT949164B (en)
SE (3) SE383800B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236619A (en) * 1989-10-06 1991-04-10 Breed Automotive Tech Velocity change sensors
US5031931A (en) * 1989-12-06 1991-07-16 Breed Automotive Corporation Velocity change sensor with spring bias

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812726A (en) * 1972-09-28 1974-05-28 Technar Inc Velocity responsive apparatus
US4005298A (en) * 1975-05-19 1977-01-25 Esterline Electronics Corporation Electrically conductive moveable support member for use in electrical switches
US4167276A (en) * 1976-12-17 1979-09-11 Allied Chemical Corporation Self-contained air bag system
WO1979000500A1 (en) * 1978-05-12 1979-08-09 Inertia Switch Ltd An inertia switch device
GB8314801D0 (en) * 1983-05-27 1983-07-06 Minnesota Mining & Mfg Electrical switch
US4594485A (en) * 1985-04-04 1986-06-10 Brown Jr Milton F Impact sensor
US4819960A (en) * 1986-11-21 1989-04-11 Breed Automotive Technology, Inc. Angled vehicle crash sensor
FR2628887B1 (en) * 1988-03-17 1990-04-13 Geiszt Andreas AUTOMATIC CIRCUIT BREAKER FOR SHOCK VEHICLES
US4857680A (en) * 1988-12-22 1989-08-15 Ford Motor Company Acceleration sensor
GB2228828B (en) * 1989-01-19 1992-09-02 Inertia Switch Ltd Inertia sensor assembly
DE3908368A1 (en) * 1989-03-15 1990-09-20 Bayerische Motoren Werke Ag ACCELERATION SENSOR
CA2026873C (en) * 1989-10-04 1997-06-17 Stephen C. Jacobsen Mechanical/electrical displacement transducer
US5457368A (en) * 1993-03-09 1995-10-10 University Of Utah Research Foundation Mechanical/electrical displacement transducer
US5198740A (en) * 1989-10-04 1993-03-30 University Of Utah Research Foundation Sliding contact mechanical/electrical displacement transducer
US4985604A (en) * 1989-10-10 1991-01-15 Trw Technar Inc. Rolamite sensor
US5272293A (en) * 1992-10-29 1993-12-21 The United States Of America As Represented By The United States Department Of Energy Rolamite acceleration sensor
US5462363A (en) * 1994-07-21 1995-10-31 Brinkman; Erik J. Scroller roller band device
US6039075A (en) 1997-06-12 2000-03-21 Sarco Lc Band controlled valve/actuator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452175A (en) * 1967-05-29 1969-06-24 Atomic Energy Commission Roller-band devices
US3488098A (en) * 1968-03-26 1970-01-06 Teletype Corp Motion translating device
BE759723A (en) * 1969-12-10 1971-05-17 Atomic Energy Commission BAND AND ROLLER INERTIA SWITCH

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236619A (en) * 1989-10-06 1991-04-10 Breed Automotive Tech Velocity change sensors
GB2236619B (en) * 1989-10-06 1994-08-10 Breed Automotive Tech Improvements in and relating to velocity change sensors
US5031931A (en) * 1989-12-06 1991-07-16 Breed Automotive Corporation Velocity change sensor with spring bias

Also Published As

Publication number Publication date
SE7412514L (en) 1974-10-04
GB1386423A (en) 1975-03-05
CA950011A (en) 1974-06-25
FR2126292A1 (en) 1972-10-06
SE7412513L (en) 1974-10-04
US3688063A (en) 1972-08-29
IT949164B (en) 1973-06-11
FR2126292B1 (en) 1974-12-13
DE2206813A1 (en) 1972-08-31
SE396159B (en) 1977-09-05
SE396158B (en) 1977-09-05
SE383800B (en) 1976-03-29
BR7200964D0 (en) 1973-06-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee