Acceleration responsive sensor

Claim 2

A sensor comprising, in combination, a tubular housing, an annular base member of dielectric material and including a generally planar wall having one side thereof facing one end of the housing and having a sector shaped recess therethrough opening to the housing and cooperatively defined by a pair of angularly diverging side walls joined at their distal ends by an arcuate end wall, the side walls and end wall being integral with the base member, means securing the base member to the housing, a contact member located between the one end of the housing and the planar wall and including at least one cantilever spring finger extending over the recess from the arcuate end wall thereof, a spring rod extending through the housing, means mounting the rod adjacent one end thereof to the housing adjacent the other end thereof and insulating the rod from the housing, a mass secured to the other end of the rod and electrically connected thereto, the mass having at least a portion thereof movable within the sector shaped recess, a pole magnet, and integral means mounting the magnet on the planar wall adjacent the proximal end of the recess and locating the axis of the magnet coplanar with a bisector of the recess, the magnet magnetically attracting the mass into engagement with the side walls of the recess adjacent the proximal ends thereof, an acceleration pulse of predetermined amplitude and time moving the mass toward the arcuate end wall of the recess and into wiping engagement with the spring finger to close a circuit across a source of power connected to the mass and spring finger.

Claim 3

A sensor comprising, in combination, a tubular housing, an annular base member of dielectric material and including a generally planar wall having one side thereof facing one end of the housing and having a sector shaped recess therethrough opening to the housing and cooperatively defined by a pair of angularly diverging side walls joined at their distal ends by an arcuate end wall, the side walls and end wall being integral with the base member, means securing the base member to the housing, a contact member located between the one end of the housing and the planar wall and including at least one cantilever spring finger extending over the recess from the arcuate end wall thereof, a spring rod extending through the housing, means mounting the rod adjacent one end thereof to the housing adjacent the other end thereof and insulating the rod from the housing, a mass secured to the other end of the rod and electrically connected thereto, the mass having at least a portion thereof movable within the sector shaped recess, a pole magnet, and integral means mounting the magnet on the planar wall adjacent the proximal end of the recess and locating the axis of the magnet coplanar with a bisector of the recess, the magnet magnetically attracting the mass into engagement with the side walls of the recess adjacent the proximal ends thereof, an acceleration pulse of predetermined amplitude and time moving the mass toward the arcuate end wall of the recess and into wiping engagement with the spring finger to close a circuit across a source of power connected to the mass and spring finger.

Claim 4

A sensor comprising, in combination, a tubular housing, an annular base member of dielectric material and including a generally planar wall having one side thereof facing one end of the housing and having a sector shaped recess therethrough opening to the housing and cooperatively defined by a pair of angularly diverging side walls joined at their distal ends by an arcuate end wall, the side walls and end wall being integral with the base member, means securing the base member to the housing, a contact member located between the one end of the housing and the planar wall and including at least one cantilever spring finger extending over the recess from the arcuate end wall thereof, a spring rod extending through the housing, means mounting the rod adjacent one end thereof to the housing adjacent the other end thereof and insulating the rod from the housing, a mass secured to the other end of the rod and electrically connected thereto, the mass having at least a portion thereof movable within the sector shaped recess, a pole magnet, and integral means mounting the magnet on the planar wall adjacent the proximal end of the recess and locating the axis of the magnet coplanar with a bisector of the recess, the magnet magnetically attracting the mass into engagement with the side walls of the recess adjacent the proximal ends thereof, an acceleration pulse of predetermined amplitude and time moving the mass toward the arcuate end wall of the recess and into wiping engagement with the spring finger to close a circuit across a source of power connected to the mass and spring finger.

Claim 5

A sensor comprising, in combination, a tubular housing, an annular base member of insulating material including a generally planar wall having one side thereof facing one end of the housing and having a sector shaped recess therethrough opening to the housing and cooperatively defined by a pair of angularly diverging integral side walls joined at their distal ends by an integral arcuate end wall, means indexing the housing and base member to each other, means securing the base member to the housing, a contact member indexed to the housing and located between the one end of the housing and the one side of the planar wall, the contact member including at least one cantilever spring finger extending angularly to the recess from the arcuate end wall thereof, a spring rod extending through the housing, insulating means mounting the rod adjacent one end thereof to the housing adjacent the other end thereof, a mass secured to the other end of the rod and having at least a portion thereof movable within the sector shaped recess, a pole magnet, and integral means on the base member mounting the magnet on the other side of the planar wall, the magnet axis being coplanar with a bisector of the recess, the magnet magnetically attracting the mass into engagement with the side walls of the recess adjacent the proximal ends thereof, an acceleration pulse of predetermined amplitude and time moving the mass toward the arcuate end wall of the recess and into wiping engagement with the spring finger to close a circuit across a source of power connected to the mass and spring finger.

Claim 6

A sensor comprising, in combination, a tubular housing, an annular base member of insulating material including a generally planar wall having one side thereof facing one end of the housing and having a sector shaped recess therethrough opening to the housing and cooperatively defined by a pair of angularly diverging integral side walls joined at their distal ends by an integral arcuate end wall, means indexing the housing and base member to each other, means securing the base member to the housing, a contact member indexed to the housing and located between the one end of the housing and the one side of the planar wall, the contact member including at least one cantilever spring finger extending angularly to the recess from the arcuate end wall thereof, a spring rod extending through the housing, insulating means mounting the rod adjacent one end thereof to the housing adjacent the other end thereof, a mass secured to the other end of the rod and having at least a portion thereof movable within the sector shaped recess, a pole magnet, and integral means on the base member mounting the magnet on the other side of the planar wall, the magnet axis being coplanar with a bisector of the recess, the magnet magnetically attracting the mass into engagement with the side walls of the recess adjacent the proximal ends thereof, an acceleration pulse of predetermined amplitude and time moving the mass toward the arcuate end wall of the recess and into wiping engagement with the spring finger to close a circuit across a source of power connected to the mass and spring finger.

Claim 7

A sensor comprising, in combination, a vertical tubular housing of conducting material, an annular base member of insulating material including a generally horizontal integral wall having the upper side thereof facing the lower end of the housing and having a sector shaped recess therethrough opening to the housing and cooperatively defined by a pair of angularly diverging integral side walls joined at their distal ends by an integral arcuate end wall, means securing the base member to the housing, a contact member electrically connected to the lower end of the housing and located therebetween and the upper side of the planar wall, the contact member including at least one cantilever spring finger extending angularly to the recess from the arcuate end wall thereof, a spring rod extending through the housing, means mounting the upper end of the rod to the upper end of the housing, a mass secured to the lower end of the rod and having at least a portion thereof movable within the sector shaped recess, a pole magnet, and integral means on the base member wall mounting the magnet on the lower side thereof, the magnet axis being coplanar with a bisector of the recess, the magnet magnetically attracting the mass into engagement with the side walls of the recess adjacent the proximal ends thereof, an acceleration pulse of predetermined amplitude and time moving the mass toward the arcuate end wall of the recess and into wiping engagement with the spring finger to close a circuit across a source of power connected to the mass through the rod and to the spring finger through the housing.

Claim 8

A sensor comprising, in combination, a vertical tubular housing of conducting material, an annular base member of insulating material including a generally horizontal integral wall having the upper side thereof facing the lower end of the housing and having a sector shaped recess therethrough opening to the housing and cooperatively defined by a pair of angularly diverging integral side walls joined at their distal ends by an integral arcuate end wall, means securing the base member to the housing, a contact member electrically connected to the lower end of the housing and located therebetween and the upper side of the planar wall, the contact member including at least one cantilever spring finger extending angularly to the recess from the arcuate end wall thereof, a spring rod extending through the housing, means mounting the upper end of the rod to the upper end of the housing, a mass secured to the lower end of the rod and having at least a portion thereof movable within the sector shaped recess, a pole magnet, and integral means on the base member wall mounting the magnet on the lower side thereof, the magnet axis being coplanar with a bisector of the recess, the magnet magnetically attracting the mass into engagement with the side walls of the recess adjacent the proximal ends thereof, an acceleration pulse of predetermined amplitude and time moving the mass toward the arcuate end wall of the recess and into wiping engagement with the spring finger to close a circuit across a source of power connected to the mass through the rod and to the spring finger through the housing.