US2881276A - All-ways acceleration switch - Google Patents

All-ways acceleration switch Download PDF

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Publication number
US2881276A
US2881276A US582049A US58204956A US2881276A US 2881276 A US2881276 A US 2881276A US 582049 A US582049 A US 582049A US 58204956 A US58204956 A US 58204956A US 2881276 A US2881276 A US 2881276A
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United States
Prior art keywords
switch
sphere
ways
acceleration
acceleration switch
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Expired - Lifetime
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US582049A
Inventor
Milton S Mintz
Robert J Vernier
Robert L Ainsley
Franklin William John
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Milton S Mintz
Robert J Vernier
Robert L Ainsley
Franklin William John
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Application filed by Milton S Mintz, Robert J Vernier, Robert L Ainsley, Franklin William John filed Critical Milton S Mintz
Priority to US582049A priority Critical patent/US2881276A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00Switches operated by change of a physical condition
    • H01H35/14Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch

Description

M. s. |vv|||\.rr'z ETAL ALL-WAYS AccELERATIoN SWITCH April "i,y 1959 Filed May 1, 1956 k 0 .x 9., L f
United ALL-WAYS AC-CELERATION SWITCH Application May 1, 1956, Serial No. 582,049 1 Claim. (Cl. ZOU-61.45) (Granted under Title 35, U. S. Code (1952), sec. 26.6)
The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment to us of any royalty thereon.
This invention relates to an acceleration switch. More particularly, it relates to a switch for closing an electrical circuit, which switch is operated by accelerating the structure in any direction.
Specifically, the invention relates to an acceleration switch wherein a central conducting sphere is spring positioned within a conducting spherical cavity in such a manner that acceleration of the structure in any direction Will result in a displacement of the sphere within the cavity with resulting contact between said sphere and said cavity walls.
This switch may be used for closing any electric circuit where it is desired to actuate the switch by acceleration. It is particularly useful, however, as a means of initiating a high explosive charge or other munition which is accelerated by dropping or firing.
In the drawings, Fig. 1 shows the switch complete with battery and detonator for use in a munition. Fig. 2 shows a section through the switch including an outside cylindrical casing composed of the two halves and 12 which are screwed together by means of threads 14. Within the spherical cavity formed by the outside casing 10 and ire 12 is the sphere 16. The latter is supported substantially concentrically of the spherical cavity by means of multiple springs 18. These springs are insulated from sphere 16 by means of recessed insulating pads 2t?. Sphere 16 is provided with multiple contact points 22 which project into the space between the sphere and casing. Transfer shaft 26 makes contact with sphere 16 by a sliding fit in central bore 28. The upper end of shaft 26 terminates in a ball 30 which ts into and makes electrical contact with socket 32. The latter is insulated from the outer casing 10 by means of fitting 34. Conductor 36 makes contact with the socket 32 and accordingly with the transfer shaft 26 and sphere 16. Conductor 3S makes contact with the outer casing 10, 12. The switch will close when any one of points 22 make contact with the casing 10, 12 and this will be brought about when the outer casing is accelerated in any direction suticiently to cause the inertia of sphere 16 to compress springs 18.
This acceleration would take place if the switch were installed in a shell or bomb. By varying the tension of springs 18 and the mass of sphere 16, it is possible to construct a switch which will close with accelerations as low as 1.5 gravity. Correspondingly, upper limits of acceleration necessary for closing the switch can be made any value desired.
We claim:
An acceleration switch comprising inner and outer conducting bodies, said inner body being spherical and fitted with multiple spaced contact points, said inner sphere being spaced apart from the spherical cavity of said outer body by a plurality of insulated -coil spring means, said inner sphere having a conducting terminal comprising a rod, slidable in a diametral opening of said inner sphere, the other end of said rod being pivotally anchored in a terminal block supported by and insulated from said outer body.
References Cited in the le of this patent UNITED STATES PATENTS 2,793,260 Closek May 21, 1957
US582049A 1956-05-01 1956-05-01 All-ways acceleration switch Expired - Lifetime US2881276A (en)

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US582049A US2881276A (en) 1956-05-01 1956-05-01 All-ways acceleration switch

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US582049A US2881276A (en) 1956-05-01 1956-05-01 All-ways acceleration switch

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US2881276A true US2881276A (en) 1959-04-07

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080761A (en) * 1959-03-24 1963-03-12 Itt Accelerometer
US3103120A (en) * 1961-10-04 1963-09-10 Joseph F Tinney Omnidirectional "g" switch
US3117455A (en) * 1961-07-19 1964-01-14 Acf Ind Inc Omnidirectional accelerometer
US3136293A (en) * 1962-10-05 1964-06-09 Paul H Schmitt Go-no-go g-indicator
US3141126A (en) * 1959-06-04 1964-07-14 Sun Oil Co Motion detection apparatus and method for use in bore hole logging
US3218870A (en) * 1962-06-12 1965-11-23 Richard H Baker Device for measuring accelerations and decelerations
US3394237A (en) * 1966-09-06 1968-07-23 Sanders Associates Inc Omnidirectional inertial switch
US3407668A (en) * 1965-04-28 1968-10-29 Robert G. Babson Turbulence indicator for aircraft
US3407667A (en) * 1965-11-17 1968-10-29 Honeywell Inc Omnidirectional inertial trigger apparatus
US3434352A (en) * 1961-05-01 1969-03-25 Bosch Arma Corp Accelerometers
US3545282A (en) * 1965-04-14 1970-12-08 Conductron Corp Accelerometer
US3631804A (en) * 1968-08-20 1972-01-04 Us Navy Omnidirectional spring mass initiator (u)
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
US3673362A (en) * 1971-05-14 1972-06-27 Us Army Electric impact switch
US3717094A (en) * 1962-12-03 1973-02-20 Us Army Mine fuze
US3731019A (en) * 1971-07-23 1973-05-01 B Heurtebise Omni-directional force sensor
US3945338A (en) * 1974-11-13 1976-03-23 Affonso Henriques Correa Location indicator for lost aircraft
US4032733A (en) * 1975-10-06 1977-06-28 Meisenheimer Jr Daniel Thomas Omnidirectional inertia switch
EP0066629A1 (en) * 1980-12-11 1982-12-15 Fanuc Ltd. Safety mechanism for industrial robot
WO1988004459A1 (en) * 1986-12-02 1988-06-16 Josef Meuter Oscillation and vibration contact
US5048552A (en) * 1990-06-28 1991-09-17 Bourne Douglas A Universal trip valve operators and trip actuating seismic vibration sensors and transducers therefor
US5986438A (en) * 1998-04-21 1999-11-16 Heller-Dejulio Corporation Rotary induction machine having control of secondary winding impedance
WO2002010595A2 (en) 2000-07-28 2002-02-07 Aoyama Seisakusho Co., Ltd. Fastener
US8461468B2 (en) 2009-10-30 2013-06-11 Mattel, Inc. Multidirectional switch and toy including a multidirectional switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793260A (en) * 1954-11-23 1957-05-21 Olin Mathieson Switch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793260A (en) * 1954-11-23 1957-05-21 Olin Mathieson Switch

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080761A (en) * 1959-03-24 1963-03-12 Itt Accelerometer
US3141126A (en) * 1959-06-04 1964-07-14 Sun Oil Co Motion detection apparatus and method for use in bore hole logging
US3434352A (en) * 1961-05-01 1969-03-25 Bosch Arma Corp Accelerometers
US3117455A (en) * 1961-07-19 1964-01-14 Acf Ind Inc Omnidirectional accelerometer
US3103120A (en) * 1961-10-04 1963-09-10 Joseph F Tinney Omnidirectional "g" switch
US3218870A (en) * 1962-06-12 1965-11-23 Richard H Baker Device for measuring accelerations and decelerations
US3136293A (en) * 1962-10-05 1964-06-09 Paul H Schmitt Go-no-go g-indicator
US3717094A (en) * 1962-12-03 1973-02-20 Us Army Mine fuze
US3545282A (en) * 1965-04-14 1970-12-08 Conductron Corp Accelerometer
US3407668A (en) * 1965-04-28 1968-10-29 Robert G. Babson Turbulence indicator for aircraft
US3407667A (en) * 1965-11-17 1968-10-29 Honeywell Inc Omnidirectional inertial trigger apparatus
US3394237A (en) * 1966-09-06 1968-07-23 Sanders Associates Inc Omnidirectional inertial switch
US3631804A (en) * 1968-08-20 1972-01-04 Us Navy Omnidirectional spring mass initiator (u)
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
US3673362A (en) * 1971-05-14 1972-06-27 Us Army Electric impact switch
US3731019A (en) * 1971-07-23 1973-05-01 B Heurtebise Omni-directional force sensor
US3945338A (en) * 1974-11-13 1976-03-23 Affonso Henriques Correa Location indicator for lost aircraft
US4032733A (en) * 1975-10-06 1977-06-28 Meisenheimer Jr Daniel Thomas Omnidirectional inertia switch
EP0066629A1 (en) * 1980-12-11 1982-12-15 Fanuc Ltd. Safety mechanism for industrial robot
EP0066629A4 (en) * 1980-12-11 1983-04-06 Fanuc Ltd Safety mechanism for industrial robot.
WO1988004459A1 (en) * 1986-12-02 1988-06-16 Josef Meuter Oscillation and vibration contact
US5048552A (en) * 1990-06-28 1991-09-17 Bourne Douglas A Universal trip valve operators and trip actuating seismic vibration sensors and transducers therefor
US5986438A (en) * 1998-04-21 1999-11-16 Heller-Dejulio Corporation Rotary induction machine having control of secondary winding impedance
US6163137A (en) * 1998-04-21 2000-12-19 Heller-Dejulio Corporation Rotary induction machine having control of secondary winding impedance
AU750855B2 (en) * 1998-04-21 2002-08-01 Heller-Dejulio Corporation Rotary induction machine having control of secondary winding impedance
WO2002010595A2 (en) 2000-07-28 2002-02-07 Aoyama Seisakusho Co., Ltd. Fastener
US8461468B2 (en) 2009-10-30 2013-06-11 Mattel, Inc. Multidirectional switch and toy including a multidirectional switch

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