Acceleration sensing device
First Claim
1. An acceleration sensing device comprising an electrically conductive horizontally disposed cylindrical non-magnetic support ring having a hole of predetermined radius, an insulating substrate supporting said support ring, an electrically conductive sphere having a radius larger than that of the hole of said support ring and placed on the upper inner periphery of said support ring, an electrically conductive contact member, and means supporting said contact member fixedly above said sphere and spaced therefrom when the sphere is normally on the support ring, said contact member having an axis substantially coaxial with the axis of the hole in said support ring, thereby establishing an electrical path between said support ring and said contact member when an acceleration having a horizontal component greater than a predetermined value is applied to the sphere causing it to pivot on the inner edge of said support ring to make contact with the contact member.
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Accused Products
Abstract
An acceleration sensing device comprising an electrically conductive annular conductive support ring, an electrically conductive sphere to be placed on the upper inner periphery of said support ring, and an electrically conductive contact disposed in the neighborhood of said ball, thereby the device being capable of detecting acceleration in any direction by the use of the electrical conduction between the support ring and the contact through the ball.
56 Citations
23 Claims
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1. An acceleration sensing device comprising an electrically conductive horizontally disposed cylindrical non-magnetic support ring having a hole of predetermined radius, an insulating substrate supporting said support ring, an electrically conductive sphere having a radius larger than that of the hole of said support ring and placed on the upper inner periphery of said support ring, an electrically conductive contact member, and means supporting said contact member fixedly above said sphere and spaced therefrom when the sphere is normally on the support ring, said contact member having an axis substantially coaxial with the axis of the hole in said support ring, thereby establishing an electrical path between said support ring and said contact member when an acceleration having a horizontal component greater than a predetermined value is applied to the sphere causing it to pivot on the inner edge of said support ring to make contact with the contact member.
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2. An acceleration sensing device comprising an electrically conductive cylindrical support ring having a hole of predetermined radius;
- an insulating substrate supporting said support ring;
an electrically conductive sphere having a radius larger than that of the hole of said support ring and placed on the upper inner periphery of said support ring;
an electrically conductive contact member;
means supporting said contact member fixedly above said sphere and spaced therefrom when the sphere is normally on the support ring, said contact member having an axis substantially coaxial with the axis of the hole in said support ring; and
an inner vessel-shaped casing tightly fixed at its opening surface to said insulating substrate to cover said support ring and said sphere, said inner casing having said contact member adjustably mounted thereon for setting the gap between said contact member and said sphere thereby establishing an electrical path between said support ring and said contact member when an acceleration above a predetermined value is applied to the sphere to make contact with the contact member. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
- an insulating substrate supporting said support ring;
- 11. An acceleration sensing device comprising a conductive cylindrical support ring having a hole, an insulating substrate supporting said support ring, a sphere having a radius larger than that of the hole of said support ring and placed on the upper inner periphery of said support ring, a resilient conductive plate means having at least one end connected with said support ring and a portion always brought into contact with the top of said sphere, and a conductive contact member fixedly supported above and separated from said sphere, said resilient conductive plate means being spaced from the contact member when the sphere is normally disposed on the support ring to thereby establish an electrical path between the support ring and the contact member by occurrence of a contact between said resilient conductive plate means and said contact member when an acceleration above a predetermined value is applied.
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15. An acceleration sensing device comprising a conductive cylindrical support ring having a hole, an insulating substrate supporting said support ring, a sphere having a radius larger than that of the hole of said support ring and placed on the upper inner periphery of said support ring, a conductive contact member fixedly supported above and separated from said sphere, conductive guide members vertically extending from and electrically connected with said support ring, a conductive contact plate mounted on said guide members between said sphere and said contact member slidably in the vertical direction, and resilient members mounted on said guide members respectively to urge the contact plate downward to thereby bring said contact plate into contact with the top of said sphere and to hold the contact plate spaced from said contact member when the sphere is normally disposed on the support ring, whereby an electrical path between said support ring and said contact member is established by occurrence of a contact between said contact plate and said contact member when an acceleration is above a predetermined value applied.
- 16. An acceleration sensing device comprising an electrically conductive cylindrical support ring having a hole, an insulating substrate supporting said support ring and having a first and a second conductive terminals, the first terminal being connected with the support ring, an electrically conductive sphere having a radius larger than that of the hole of said support ring and placed on the upper inner periphery of said support ring, and an electrically conductive contact member fixed on said substrate in the central portion of the hole of said support ring below the upper surface of said support ring and connected with said second conductive terminal, said sphere contacting the top of said contact member when the sphere is normally disposed on the ring to establish an electrical path between said terminals, and breaking contact with the contact member upon application of an acceleration above a predetermined value to open the electrical path.
- 20. An acceleration sensing device comprising a support ring having a hole and consisting of two semi-cylindrical electrical conductors and insulating plates interposed between said semi-cylindrical conductors to electrically isolate the conductors from each other, an electrically conductive sphere placed on the upper inner periphery of the hole of said support ring at its rest, and a housing for supporting said support ring and preventing the fall of said sphere, said sphere normally contacting both of the two semi-cylindrical conductors to establish an electrical path between said semi-cylindrical conductors and breaking the contact with either one of the semi-cylindrical conductors upon application of an acceleration above a predetermined value to open the electrical path.
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23. An acceleration sensing device comprising an electrically conductive cylindrical support ring having a hole of predetermined radius;
- an insulating substrate supporting said support ring;
an electrically conductive sphere having a radius larger than that of the hole of said support ring and placed on the upper inner periphery of said support ring;
an electrically conductive contact member;
means supporting said contact member fixedly above said sphere and spaced therefrom when the sphere is normally on the support ring, said contact member having an axis substantially coaxial with the axis of the hole in said support ring;
an electrically conductive plate shaped in a U-form and having at least one end fixed to said insulating substrate to partially cover said sphere and said support ring; and
an electrically conductive screw means adjustably mounted on the top surface of said U-shaped conductive plate, said contact member being mounted on the bottom of said screw means above said sphere with a minute gap left between said contact member and said sphere thereby establishing an electrical path between said support ring and said contact member when an acceleration above a predetermined value is applied to the sphere to make contact with the contact member.
- an insulating substrate supporting said support ring;
Specification