IT1251210B - Sensore del cambiamento di velocita' con migliorata sollecitazione elastica - Google Patents
Sensore del cambiamento di velocita' con migliorata sollecitazione elasticaInfo
- Publication number
- IT1251210B IT1251210B ITTO910714A ITTO910714A IT1251210B IT 1251210 B IT1251210 B IT 1251210B IT TO910714 A ITTO910714 A IT TO910714A IT TO910714 A ITTO910714 A IT TO910714A IT 1251210 B IT1251210 B IT 1251210B
- Authority
- IT
- Italy
- Prior art keywords
- speed change
- change sensor
- elastic strength
- improved elastic
- inertial element
- Prior art date
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
-
- 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
- H01H35/141—Details
- H01H35/142—Damping means to avoid unwanted response
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Air Bags (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Un accelerometro per un sistema di sicurezza a ritenuta per passeggeri in un autoveicolo, comprende un involucro con un percorso per un elemento inerziale, e una molla a spirale per sollecitare l'elemento inerziale verso una posizione prestabilita. Quando il veicolo decelera ad una velocità superiore ad una velocità prestabilita, la sfera si allontana dalla posizione prescelta e chiude un contatto elettrico.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/587,262 US5098122A (en) | 1989-12-06 | 1990-09-24 | Velocity change sensor with improved spring bias |
Publications (3)
Publication Number | Publication Date |
---|---|
ITTO910714A0 ITTO910714A0 (it) | 1991-09-20 |
ITTO910714A1 ITTO910714A1 (it) | 1993-03-20 |
IT1251210B true IT1251210B (it) | 1995-05-04 |
Family
ID=24349069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITTO910714A IT1251210B (it) | 1990-09-24 | 1991-09-20 | Sensore del cambiamento di velocita' con migliorata sollecitazione elastica |
Country Status (8)
Country | Link |
---|---|
US (1) | US5098122A (it) |
JP (1) | JP3160026B2 (it) |
CA (1) | CA2052025C (it) |
DE (1) | DE4130897C2 (it) |
FR (1) | FR2667031B1 (it) |
GB (1) | GB2249871B (it) |
IT (1) | IT1251210B (it) |
SE (1) | SE514374C2 (it) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5322325A (en) * | 1989-10-19 | 1994-06-21 | Breed Automotive Technology, Inc. | Safing velocity change sensor |
US5178410A (en) * | 1991-06-14 | 1993-01-12 | Breed Automotive Technology, Inc. | Velocity change sensor with lateral shock absorber |
FR2681695B1 (fr) * | 1991-09-24 | 1997-01-10 | Breed Automotive Tech | Detecteur de variation de vitesse de securite. |
DE4140691A1 (de) * | 1991-12-10 | 1993-06-17 | Trw Repa Gmbh | Fahrzeugsensitiver mechanischer kontaktgeber |
US6149190A (en) * | 1993-05-26 | 2000-11-21 | Kionix, Inc. | Micromechanical accelerometer for automotive applications |
US6199874B1 (en) | 1993-05-26 | 2001-03-13 | Cornell Research Foundation Inc. | Microelectromechanical accelerometer for automotive applications |
US5472231A (en) * | 1994-04-25 | 1995-12-05 | France; John J. | Retrofit airbag system for vehicles |
JPH08105911A (ja) * | 1994-10-06 | 1996-04-23 | Nippon Soken Inc | 衝突検出装置 |
US5642902A (en) * | 1995-09-14 | 1997-07-01 | France; John Josh | Retrofit airbag system for vehicles |
US5756948A (en) * | 1996-12-31 | 1998-05-26 | Breed Automotive Technology, Inc. | Side-impact electro-mechanical accelerometer to actuate a vehicular safety device |
US5845730A (en) * | 1996-12-31 | 1998-12-08 | Breed Automotive Technology, Inc. | Electro-mechanical accelerometer to actuate a vehicular safety device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3141936A (en) * | 1962-10-17 | 1964-07-21 | John M Boyle | Conductive springs and ball acceleration switch |
US3509299A (en) * | 1968-11-25 | 1970-04-28 | Garrett Corp | Acceleration sensor switch |
US3623449A (en) * | 1969-08-15 | 1971-11-30 | Vexiler Inc | Impact acceleration indicator |
US3655929A (en) * | 1970-10-23 | 1972-04-11 | Ford Motor Co | Device for detecting and signalling a change of more than a prescribed amount in the rate of movement of an object |
US3812726A (en) * | 1972-09-28 | 1974-05-28 | Technar Inc | Velocity responsive apparatus |
US3889130A (en) * | 1973-06-04 | 1975-06-10 | Breed Corp | Mass in liquid vehicular crash sensor |
US4116132A (en) * | 1976-12-17 | 1978-09-26 | Technar Incorporated | Inertial sensors |
SE402557B (sv) * | 1977-01-13 | 1978-07-10 | Foerenade Fabriksverken | Kollisionsdetektor |
US4329549A (en) | 1980-04-29 | 1982-05-11 | Breed Corporation | Magnetically biased velocity change sensor |
US4594485A (en) * | 1985-04-04 | 1986-06-10 | Brown Jr Milton F | Impact sensor |
US4816627A (en) * | 1987-12-24 | 1989-03-28 | Ford Motor Company | Fluid damped acceleration sensor |
US4900880A (en) * | 1988-08-15 | 1990-02-13 | Automotive Technologies International, Inc. | Gas damped crash sensor |
US4857680A (en) * | 1988-12-22 | 1989-08-15 | Ford Motor Company | Acceleration sensor |
-
1990
- 1990-09-24 US US07/587,262 patent/US5098122A/en not_active Expired - Lifetime
-
1991
- 1991-09-04 GB GB9118987A patent/GB2249871B/en not_active Expired - Fee Related
- 1991-09-13 JP JP26278191A patent/JP3160026B2/ja not_active Expired - Fee Related
- 1991-09-17 DE DE4130897A patent/DE4130897C2/de not_active Expired - Fee Related
- 1991-09-20 IT ITTO910714A patent/IT1251210B/it active IP Right Grant
- 1991-09-23 CA CA002052025A patent/CA2052025C/en not_active Expired - Fee Related
- 1991-09-23 SE SE9102744A patent/SE514374C2/sv not_active IP Right Cessation
- 1991-09-24 FR FR9111764A patent/FR2667031B1/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0682470A (ja) | 1994-03-22 |
JP3160026B2 (ja) | 2001-04-23 |
ITTO910714A0 (it) | 1991-09-20 |
GB2249871B (en) | 1994-09-21 |
DE4130897A1 (de) | 1992-03-26 |
US5098122A (en) | 1992-03-24 |
SE9102744D0 (sv) | 1991-09-23 |
GB2249871A (en) | 1992-05-20 |
FR2667031B1 (fr) | 1994-01-14 |
DE4130897C2 (de) | 1997-05-15 |
ITTO910714A1 (it) | 1993-03-20 |
SE514374C2 (sv) | 2001-02-19 |
CA2052025A1 (en) | 1992-03-25 |
GB9118987D0 (en) | 1991-10-23 |
SE9102744L (sv) | 1992-03-25 |
FR2667031A1 (fr) | 1992-03-27 |
CA2052025C (en) | 1995-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19940928 |