US3022393A - Acceleration switch - Google Patents
Acceleration switch Download PDFInfo
- Publication number
- US3022393A US3022393A US861538A US86153859A US3022393A US 3022393 A US3022393 A US 3022393A US 861538 A US861538 A US 861538A US 86153859 A US86153859 A US 86153859A US 3022393 A US3022393 A US 3022393A
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- Prior art keywords
- contact
- mass
- housing
- conductive
- acceleration
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- 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
Definitions
- This invention relates in general to electrical switches and in particular to a new and useful acceleration actuated electrical switch, having a functional and structural design particularly adapted for miniature sizes.
- the present invention is particularly directed to electrical switches which are actuated by the force of acceleration.
- Such switches include a resiliently mounted mass which moves to efiect either the making or break ing of electrical contact.
- the present invention is an improvement in such types of switch and provides a unidirectional, single axis switch in which an electrical circuit is adapted to be closed and/or opened at a preset value of acceleration.
- An advantage of such a switch construction is that it can be mounted for response to acceleration in a predetermined direction.
- the mechanism is such that the parts are not subject to malfunctioning due tochange of atmospheric conditions and the parts are easy to set for operation and easily accessible for repair and replacement.
- a switch including a cylindrical container having a contact mass-member slidable therein and biased in one direction by a resilient member of predetermined biasing force.
- the slidable contact mass-member is electrically connected, preferably, through the walls of the casing to a stationary contact.
- a second contact member is located so that a portion thereof extends within the cylinder and is engageable with a conductive portion of the mass-member whenever that member has been moved a sufficient distance against the force of the restraining resilient member, such as by an acceleration in the opposite direction.
- the mass-member is made hollow and includes an insulation collar and a conductive collar which are tightly fitted on the interior thereof.
- the fixed contact member includes outwardly biased resilient contact points which are in engagement with one of either of the insulation collar or conductive collar.
- the collars can be positioned so that either contact is normally madewhen the switch is at rest and is broken upon acceleration of the switch to a predetermined value; or the contact points are normally in contact with the insulation collar and are moved out of contact therewith upon acceleration of the switch to a predetermined amount.
- a further object of the invention is to provide an acceleration switch including unidirectional means responsive to changes in acceleration to make or break an electric circuit.
- a further object of the invention is to provide an acceleration switch including a conductive material mass slidable in a cylindrical casing of conductive material and biased in one direction by a coil spring and including spaced conductive and insulation portions on said mass, at least one of which is engaged by a stationary resilient contact member, whereby said mass is movable upon acceleration to present the other of said portions in contact with said stationary contact member.
- a further object of the invention is to provide an acceleration switch which is simple in design, rugged in construction and economical to manufacture.
- FIG. 1 is a longitudinal section of a miniature acceleration switch shown on an enlarged scale
- FIG. 2 is a view similar to FIG. 1 but with the parts in an operative contact making position;
- FIG. 3 is a section taken in the vicinity of the line 33.
- the invention as embodied therein includes an outer cylindrical housing generally designated 10 which is closed at one end by a cap member 12 which is welded to the housing as at the location 14. At least an inner face 16 of the housing 10 is made of conductive material which is in electrical contact with the cap member 12 and with a fixed contact terminal 18 which is inserted into an opening 20 in the cap member.
- the contact member 18 includes a rod portion 22 which is press-fitted into the opening 20 and which makes good electrical contact with the cap member 12.
- a cylindrical or sleeve-like member or mass generally designated 24 which is slidable within the cylindrical housing 10 with portions 25 of the outer walls thereof in engagement with the inner wall 16 of the cylindrical housing 10.
- the sliding mass 24 is biased to the right as shown in FIG. 1 by a compression spring 28, one end of which, 3%), extends through a small passageway defined in the mass member 24 and is secured thereto as by soldering; and the other end of which extends into a small opening 32 in a disc-shaped cap piece 34 which is afiixed to this end of the housing 10 by soldering as at 35.
- the coil spring 28 is centered over an outstanding portion 36 of the cap piece 34 and biases the mass 24 to the right.
- the cap 12 includes a large central opening which receives a fixed contact member and terminal generally designated 38, inluding a central cylindrical portion 37 of insulation material.
- the contact 38 is soldered to housing 10 as at 39.
- the contact member and terminal 38 includes a terminal portion 40 at the exterior of the housing 10 and a contact portion generally designated 42 which extends through the cylindrical portion 37 and into the housing It and a hollowed portion of the mass member 24.
- the contact member portion 42 includes a plurality of angularly spaced resilient contacts 44 having their inner ends held by a coil spring or wound wire 46 which is soldered and encapsulated by an epoxy resin material 48 and a resin dip 49.
- the other ends 44 are curved and are biased outwardly or upwardly by the coil spring 46 into contact with an insulation material collar member 50 which is press-fitted into the interior of the hollowed portion of the mass 24.
- a second collar member 52 of conductive material is located adjacent the collar member 50 and is also press-fitted into the hollowed portion of the mass 24 for movement therewith.
- the interior of the cylinder is evacuated of air and an inert gas is directed into the cylinder through a passage 54 and a metal plug 56 which is thereafter sealed by crimping the outer end.
- any movement of the mass 24' is gas dampened with a gas whose characteristics are well known when subject to various ambient conditions.
- the contact and terminal member 38 is normally anchored in position as by solder- 9 ing around the edges at 39 after the switch is calibrated by locating the contacts 4 2 and anchoring the contact member with a set screw as which extends through the member 37 and into contact with the contact and terminal member 4i).
- the switch may be set to operate as indicated in FIG. 1 in which case in the non-actuated position the contacts 44 are in contact with the insulation collar 5i; on the the ss 24. In this position when one line of an electric circuit is connc ted to the terminal 18 and the other is connected to the terminal as, electrical contact will not be made and the circuit will be opened.
- the device in which the switch is mounted is moved through an acceleration of a predetermined amount, the mass 24 will compress the spring 28, and, when a sulficient force of acceleration has been applied, the contacts will contact the conductive collar 52 as the mass 24 is moved against the spring '23 to complete the circuit from the terminal mem ber 18, the inner face 16 of the housing lid and the mass 24 to the terminal (See P16. 2.)
- the positions of the collars 5d and 52 may be reversed so that the contacts ddwill complete the electrical circuit when a switch is not subject to an acceleration force, and will disconnect the electrical circuit w ran the switch is subject to such force.
- T he actual size of the switch of the present invention may be less than 1 /2 in length and less than /2" in diameter, and the instrument may still be machined for precise actuation at a preselected acceleration.
- the switch is of simple rugged construction which permits reliable operation of the parts with very little likelihood of failure. By choosing the correct coil spring it is possible to obtain repeated performance for many hours of operation. The switch has been tested and subjected to shock conditions of 50 times gravity without causing any damage to the operating mechanism.
- the invention provides a reliable lightweight, acceleration switch which may be made accurately in minute sizes for actuating equipment in response to a preset acceleration force without the need of el ctronic circuitry.
- An acceleration switch comprising an outer hollow housing member having a longitudinal axis and having a first contact terminal in electrical contact with at least the interior wall of said housing, a second contact terminal extending into said housing and disposed in a plane coplanar with said axis, and a mass member having a conductive portion in contact with the internal wall of said housing and having aligned conductive and non-conductive portions independently engageable with said second fixed contact member along a longitudinal locus parallel to said axis, means to bias said mass in one direction to bring said second fixed contact member into engagement with one of said conductive and non-conductive portions of said mass member, said mass member being movable against said biasing means upon acceleration to move the other of said conductive and non-conductive portions into contact with said Contact member.
- a switch comprising a hollow housing member having a longitudinal axis and an interior wall of conductive material, a first contact terminal extending out of said housing and being in electrical contact with said interior wall, a second contact terminal having a portion extending out of said housing and a portion extending into said housing and said portion being disposed in a plane coplanar with said axis, a mass slidable in said housing including a conductive portion in contact with said interior wall and separate conductive and non-conductive contact portions in alignment with said second contact, the coplanar contact portion of the second contact terminal operating to engage the separate conductive and -conductive contact portions along the linear locus parallel to said axis, and resilient means biasing said mass in one direction to bring one of said conductive and non-conductive portions into contact with said portion of the second co tact member, wherein said mass is movable against the force of said biasing to bring the other of said conductive and non-conductive contact portions into contact with said portion of the second contact memher on said linear locus.
- a switch according to claim 2 wherein said mass is a hollow cylindrical member and wherein said resilient means includes a spring biased between an end wall of said housing and said cylindrical member.
- An acceleration switch comprising a cylindrical housing of conductive material having a longitudinal main axis, a hollow cylindrical mass of conductive material slidable within said housing with the outer walls thereof in contact with the interior walls of said housing, means to b s said cylindrical member in one direction in said housing, a first contact member including resilient contact portions extending into said housing and into the in .”ior of said hollow cylindrical mass, said contact memher being insulated from said housing, a second contact member electrically connected to said housing and extending outwardly therefrom, a collar of insulation material positioned in said hollow cylindrical mass and having the inner surface of said collar in a 'gnment with said contact member on a linear locus parallel to said axis, a collar oi conductive material adiacent said insulation material collar and having its inner surface also in alignment with said contact member on said linear locus, said mass being biased by said spring to a location br'nging said second contact member into engagement w..n said insulation material collar, said mass being movable against the force of said biasing upon
- said first contact member resilient contact portions include a plurality of rod members having curved outer ends disposed in angularly spaced relationship with each curved outer end disposed within its own plane, and means to bias the inner ends of said contact portions together to hold the outer ends in proper planar positions to direct the desired pressure forces of those outer ends against the inner strfaces of the collars.
- An acceleration switch comprising an outer hollow housing member having a generally longitudinal axis and having a first contact terminal in electrical contact with at least the interior wall of said housing, a second adjustable contact terminal having a resilient portion extending into said housing by a preselected amount, and a mass member having a conductive portion in contact with the internal wall of said housing and having aligned axially conductive and non-conductive portions independently engageable with said resilient portion of said second fixed contact member along a linear locus parallel to said 6 axis, means to bias said mass in one direction to bring tion of said second contact member in respect to said said second fixed contact member into engagement with housing.
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- Switches Operated By Changes In Physical Conditions (AREA)
Description
Feb. 20, 1962 P. R. WEAVER ACCELERATION SWITCH Filed Dec. 23, 1959 &
INVENTOR pAiSTO/V A? Winn 6,?
BY 7 W ATTORNEYS 3,022,393 ACCELERATION SWiTtJH Preston R. Weaver, Nyaclr, N.Y., assignor to Manson Electronics Corporation, a corporation of New York Filed Dec. 23, 1959, Ser. No. 861,538 8 Claims. {CL 2lltt-61.45)
This invention relates in general to electrical switches and in particular to a new and useful acceleration actuated electrical switch, having a functional and structural design particularly adapted for miniature sizes.
The present invention is particularly directed to electrical switches which are actuated by the force of acceleration. Such switches include a resiliently mounted mass which moves to efiect either the making or break ing of electrical contact.
The present invention is an improvement in such types of switch and provides a unidirectional, single axis switch in which an electrical circuit is adapted to be closed and/or opened at a preset value of acceleration. An advantage of such a switch construction is that it can be mounted for response to acceleration in a predetermined direction. The mechanism is such that the parts are not subject to malfunctioning due tochange of atmospheric conditions and the parts are easy to set for operation and easily accessible for repair and replacement.
In accordance with the present invention there is provided a switch including a cylindrical container having a contact mass-member slidable therein and biased in one direction by a resilient member of predetermined biasing force. The slidable contact mass-member is electrically connected, preferably, through the walls of the casing to a stationary contact. A second contact member is located so that a portion thereof extends within the cylinder and is engageable with a conductive portion of the mass-member whenever that member has been moved a sufficient distance against the force of the restraining resilient member, such as by an acceleration in the opposite direction.
In a preferred embodiment the mass-member is made hollow and includes an insulation collar and a conductive collar which are tightly fitted on the interior thereof. The fixed contact member includes outwardly biased resilient contact points which are in engagement with one of either of the insulation collar or conductive collar. The collars can be positioned so that either contact is normally madewhen the switch is at rest and is broken upon acceleration of the switch to a predetermined value; or the contact points are normally in contact with the insulation collar and are moved out of contact therewith upon acceleration of the switch to a predetermined amount.
Accordingly, it is an object of this invention to provide an improved acceleration switch.
A further object of the invention is to provide an acceleration switch including unidirectional means responsive to changes in acceleration to make or break an electric circuit.
A further object of the invention is to provide an acceleration switch including a conductive material mass slidable in a cylindrical casing of conductive material and biased in one direction by a coil spring and including spaced conductive and insulation portions on said mass, at least one of which is engaged by a stationary resilient contact member, whereby said mass is movable upon acceleration to present the other of said portions in contact with said stationary contact member.
A further object of the invention is to provide an acceleration switch which is simple in design, rugged in construction and economical to manufacture.
The various features of novelty which characterize the States Patent Oflfice 3,022,393 Patented Feb. 20, 1962 invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, its operating advantages and specific objects obtained by its use, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated and described a preferred embodiment of the invention.
In the drawings:
FIG. 1 is a longitudinal section of a miniature acceleration switch shown on an enlarged scale;
FIG. 2 is a view similar to FIG. 1 but with the parts in an operative contact making position; and
FIG. 3 is a section taken in the vicinity of the line 33.
Referring to the drawings in particular, the invention as embodied therein includes an outer cylindrical housing generally designated 10 which is closed at one end by a cap member 12 which is welded to the housing as at the location 14. At least an inner face 16 of the housing 10 is made of conductive material which is in electrical contact with the cap member 12 and with a fixed contact terminal 18 which is inserted into an opening 20 in the cap member. The contact member 18 includes a rod portion 22 which is press-fitted into the opening 20 and which makes good electrical contact with the cap member 12.
In accordance with the invention, there is provided a cylindrical or sleeve-like member or mass generally designated 24 which is slidable within the cylindrical housing 10 with portions 25 of the outer walls thereof in engagement with the inner wall 16 of the cylindrical housing 10.
In accordance with the invention, the sliding mass 24 is biased to the right as shown in FIG. 1 by a compression spring 28, one end of which, 3%), extends through a small passageway defined in the mass member 24 and is secured thereto as by soldering; and the other end of which extends into a small opening 32 in a disc-shaped cap piece 34 which is afiixed to this end of the housing 10 by soldering as at 35. The coil spring 28 is centered over an outstanding portion 36 of the cap piece 34 and biases the mass 24 to the right.
The cap 12 includes a large central opening which receives a fixed contact member and terminal generally designated 38, inluding a central cylindrical portion 37 of insulation material. The contact 38 is soldered to housing 10 as at 39. The contact member and terminal 38 includes a terminal portion 40 at the exterior of the housing 10 and a contact portion generally designated 42 which extends through the cylindrical portion 37 and into the housing It and a hollowed portion of the mass member 24.
The contact member portion 42 includes a plurality of angularly spaced resilient contacts 44 having their inner ends held by a coil spring or wound wire 46 which is soldered and encapsulated by an epoxy resin material 48 and a resin dip 49. The other ends 44 are curved and are biased outwardly or upwardly by the coil spring 46 into contact with an insulation material collar member 50 which is press-fitted into the interior of the hollowed portion of the mass 24. A second collar member 52 of conductive material is located adjacent the collar member 50 and is also press-fitted into the hollowed portion of the mass 24 for movement therewith.
After the parts have been tightly sealed together, by soldering at the joints, the interior of the cylinder is evacuated of air and an inert gas is directed into the cylinder through a passage 54 and a metal plug 56 which is thereafter sealed by crimping the outer end. Thus, any movement of the mass 24' is gas dampened with a gas whose characteristics are well known when subject to various ambient conditions. The contact and terminal member 38 is normally anchored in position as by solder- 9 ing around the edges at 39 after the switch is calibrated by locating the contacts 4 2 and anchoring the contact member with a set screw as which extends through the member 37 and into contact with the contact and terminal member 4i). In the case where set screw se is provided, adjustment may be made in respect to the location of the contacts 44 in order to change the acceleration force which will actuate the switch. In this latter case the member 38 would not be soldered in place and it is provided with line indications to provide a scale setting for the acceleration actuating value. The latter would be indicated by the reading on the scale on the member which aligns with the edge of the member 12.
The switch may be set to operate as indicated in FIG. 1 in which case in the non-actuated position the contacts 44 are in contact with the insulation collar 5i; on the the ss 24. In this position when one line of an electric circuit is connc ted to the terminal 18 and the other is connected to the terminal as, electrical contact will not be made and the circuit will be opened. When the device in which the switch is mounted is moved through an acceleration of a predetermined amount, the mass 24 will compress the spring 28, and, when a sulficient force of acceleration has been applied, the contacts will contact the conductive collar 52 as the mass 24 is moved against the spring '23 to complete the circuit from the terminal mem ber 18, the inner face 16 of the housing lid and the mass 24 to the terminal (See P16. 2.)
It should be appreciated that the positions of the collars 5d and 52 may be reversed so that the contacts ddwill complete the electrical circuit when a switch is not subject to an acceleration force, and will disconnect the electrical circuit w ran the switch is subject to such force. T he actual size of the switch of the present invention may be less than 1 /2 in length and less than /2" in diameter, and the instrument may still be machined for precise actuation at a preselected acceleration. The switch is of simple rugged construction which permits reliable operation of the parts with very little likelihood of failure. By choosing the correct coil spring it is possible to obtain repeated performance for many hours of operation. The switch has been tested and subiected to shock conditions of 50 times gravity without causing any damage to the operating mechanism.
Thus the invention provides a reliable lightweight, acceleration switch which may be made accurately in minute sizes for actuating equipment in response to a preset acceleration force without the need of el ctronic circuitry.
While a specific embodiment of the invention has been shown and described in detail to illustrate the application of the invention principles, it will be understood that the invention may be embodied otherwise without departing from such principles.
What is claimed is:
1. An acceleration switch comprising an outer hollow housing member having a longitudinal axis and having a first contact terminal in electrical contact with at least the interior wall of said housing, a second contact terminal extending into said housing and disposed in a plane coplanar with said axis, and a mass member having a conductive portion in contact with the internal wall of said housing and having aligned conductive and non-conductive portions independently engageable with said second fixed contact member along a longitudinal locus parallel to said axis, means to bias said mass in one direction to bring said second fixed contact member into engagement with one of said conductive and non-conductive portions of said mass member, said mass member being movable against said biasing means upon acceleration to move the other of said conductive and non-conductive portions into contact with said Contact member.
2. A switch comprising a hollow housing member having a longitudinal axis and an interior wall of conductive material, a first contact terminal extending out of said housing and being in electrical contact with said interior wall, a second contact terminal having a portion extending out of said housing and a portion extending into said housing and said portion being disposed in a plane coplanar with said axis, a mass slidable in said housing including a conductive portion in contact with said interior wall and separate conductive and non-conductive contact portions in alignment with said second contact, the coplanar contact portion of the second contact terminal operating to engage the separate conductive and -conductive contact portions along the linear locus parallel to said axis, and resilient means biasing said mass in one direction to bring one of said conductive and non-conductive portions into contact with said portion of the second co tact member, wherein said mass is movable against the force of said biasing to bring the other of said conductive and non-conductive contact portions into contact with said portion of the second contact memher on said linear locus.
3. A switch according to claim 2, wherein said mass is a cylindrical member and said conductive and nonconductive contact portions are defined on the interior walls thereof as co-axial cylinders defining a cylindrical 106k for the linear paths of movement of said co-planar portions of the second contact terminal.
4. A switch according to claim 2, wherein said mass is a hollow cylindrical member and wherein said resilient means includes a spring biased between an end wall of said housing and said cylindrical member.
5. An acceleration switch comprising a cylindrical housing of conductive material having a longitudinal main axis, a hollow cylindrical mass of conductive material slidable within said housing with the outer walls thereof in contact with the interior walls of said housing, means to b s said cylindrical member in one direction in said housing, a first contact member including resilient contact portions extending into said housing and into the in ."ior of said hollow cylindrical mass, said contact memher being insulated from said housing, a second contact member electrically connected to said housing and extending outwardly therefrom, a collar of insulation material positioned in said hollow cylindrical mass and having the inner surface of said collar in a 'gnment with said contact member on a linear locus parallel to said axis, a collar oi conductive material adiacent said insulation material collar and having its inner surface also in alignment with said contact member on said linear locus, said mass being biased by said spring to a location br'nging said second contact member into engagement w..n said insulation material collar, said mass being movable against the force of said biasing upon an acceleration to position the conductive collar in electrical contact with said contact whereby the electrical circuit is compieted through said. collar, said mass and said housing to sai first contact terminal.
6. An acceleration switch according to claim 5 wherein said first contact member resilient contact portions include a plurality of rod members having curved outer ends disposed in angularly spaced relationship with each curved outer end disposed within its own plane, and means to bias the inner ends of said contact portions together to hold the outer ends in proper planar positions to direct the desired pressure forces of those outer ends against the inner strfaces of the collars.
7. An acceleration switch comprising an outer hollow housing member having a generally longitudinal axis and having a first contact terminal in electrical contact with at least the interior wall of said housing, a second adjustable contact terminal having a resilient portion extending into said housing by a preselected amount, and a mass member having a conductive portion in contact with the internal wall of said housing and having aligned axially conductive and non-conductive portions independently engageable with said resilient portion of said second fixed contact member along a linear locus parallel to said 6 axis, means to bias said mass in one direction to bring tion of said second contact member in respect to said said second fixed contact member into engagement with housing. one of said conductive and non-conductive portions of said mass member, said mass member being movable References Cited in the file of this P against said biasing means upon acceleration to move 5 the other of said conductive and non-conductive portions UNITED STATES PATENTS into contact with said contact member. 2,424,390 Ferris July 22, 1947 8. An acceleration switch according to claim 7, wherein 2,850,590 Marks et a1 Sept. 2, 1958 said second contact member includes a portion slidable 2,930,863 Pasieka Mar. 29, 1960 in said housing, and means to indicate the relative posi- 10
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US861538A US3022393A (en) | 1959-12-23 | 1959-12-23 | Acceleration switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US861538A US3022393A (en) | 1959-12-23 | 1959-12-23 | Acceleration switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3022393A true US3022393A (en) | 1962-02-20 |
Family
ID=25336084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US861538A Expired - Lifetime US3022393A (en) | 1959-12-23 | 1959-12-23 | Acceleration switch |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3022393A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3157854A (en) * | 1962-04-03 | 1964-11-17 | Alfred B Riley | Vehicle deceleration indicator |
| US3194910A (en) * | 1962-10-04 | 1965-07-13 | Frank R Edgarton | Inertial switch device |
| US3593277A (en) * | 1968-04-12 | 1971-07-13 | Rudolf Faude | Maximum deceleration indicator |
| US3632920A (en) * | 1969-03-19 | 1972-01-04 | Aerodyne Controls Corp | Acceleration-responsive switch |
| US3760734A (en) * | 1972-04-28 | 1973-09-25 | Us Army | Delayed arming device |
| FR2363338A1 (en) * | 1976-09-07 | 1978-03-31 | Eaton Corp | SLOWED ACCIDENT SENSOR BY FLUID EFFECT |
| FR2586857A1 (en) * | 1985-08-27 | 1987-03-06 | Commissariat Energie Atomique | BIDIRECTIONAL ACCELEROMETRIC DISCONNECT |
| US7038150B1 (en) * | 2004-07-06 | 2006-05-02 | Sandia Corporation | Micro environmental sensing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2424390A (en) * | 1944-06-24 | 1947-07-22 | Usa | Switch |
| US2850590A (en) * | 1957-05-24 | 1958-09-02 | Bourns Lab Inc | Switches |
| US2930863A (en) * | 1958-07-21 | 1960-03-29 | Raymond L Renner | Acceleration detectors |
-
1959
- 1959-12-23 US US861538A patent/US3022393A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2424390A (en) * | 1944-06-24 | 1947-07-22 | Usa | Switch |
| US2850590A (en) * | 1957-05-24 | 1958-09-02 | Bourns Lab Inc | Switches |
| US2930863A (en) * | 1958-07-21 | 1960-03-29 | Raymond L Renner | Acceleration detectors |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3157854A (en) * | 1962-04-03 | 1964-11-17 | Alfred B Riley | Vehicle deceleration indicator |
| US3194910A (en) * | 1962-10-04 | 1965-07-13 | Frank R Edgarton | Inertial switch device |
| US3593277A (en) * | 1968-04-12 | 1971-07-13 | Rudolf Faude | Maximum deceleration indicator |
| US3632920A (en) * | 1969-03-19 | 1972-01-04 | Aerodyne Controls Corp | Acceleration-responsive switch |
| US3760734A (en) * | 1972-04-28 | 1973-09-25 | Us Army | Delayed arming device |
| FR2363338A1 (en) * | 1976-09-07 | 1978-03-31 | Eaton Corp | SLOWED ACCIDENT SENSOR BY FLUID EFFECT |
| FR2586857A1 (en) * | 1985-08-27 | 1987-03-06 | Commissariat Energie Atomique | BIDIRECTIONAL ACCELEROMETRIC DISCONNECT |
| EP0220079A1 (en) * | 1985-08-27 | 1987-04-29 | Commissariat A L'energie Atomique | Bidirectional accelerometric isolating switch |
| US4749828A (en) * | 1985-08-27 | 1988-06-07 | Commissariat A L'energie Atomique | Bidirectional accelerometric isolator |
| US7038150B1 (en) * | 2004-07-06 | 2006-05-02 | Sandia Corporation | Micro environmental sensing device |
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