Safety device assembly for vehicle occupant

Claim 2

A safety device assembly for attachment to a vehicle for protecting an occupant thereof, said assembly comprising: an inflatable safety bag; a gas container means wherein gas is contained under high pressure; a valve means, containing therein a differential pressured piston valve, in communication with said safety bag and said gas container; a sensitivity operable means which is operatively connected to said valve means and contains an inertia weight means responsive to sudden deceleration of such vehicle during collison; a plunger assembly which is quickly projected toward said valve means; and a spring means wherein there is accumulated projecting energy for projecting said plunger assembly said inertia weight means releasing the accumulated projecting energy of said spring means for projecting said plunger assembly toward said valve means.

Claim 3

A safety device as defined in claim 1 wherein said spring means comprises a coil spring and said sensitivity operable means includes a spring case for said coil spring; a rear rod formed with said plunger assembly and slidingly supported by an end portion of said spring case; an articulate link assembly jointed to said end portion and an end portion of said rear rod; an upstanding member formed at a link of said articulate link assembly and having a tongue member; a restricting means rotatably mounted on a stationary portion of said case, a cut-away portion being formed on said restricting means whereby said tongue member may pass through said cut-away portion upon rotation of said restricting means; a cylindrical surface on said restricting means which maintains contact with said tongue member; , and a connecting means provided between said restricting means and said inertia weight means.

Claim 4

A safety device as defined in claim 1 wherein said spring means comprises a coil spring and said sensitivity operable means includes a spring case for said coil spring; a rear rod formed with said plunger assembly and slidingly supported by an end portion of said spring case; an articulate link assembly jointed to said end portion and an end portion of said rear rod; a restricting surface formed upon said inertia weight means, a guide means supported on a stationary member for permitting sliding movement of said inertia weight means, and movement means provided at an articulating portion of said link assembly and being restricted in its descent by said restricting surface.

Claim 5

A safety device as defined in claim 1 wherein said plunger assembly has a sharp edge projectable against said valve means.

Claim 6

A safety device as defined in claim 1, wherein said spring means comprises a coil spring and said sensitivity operable means includes a spring case for said coil spring; and a restricting means which maintains contact with a part of said plunger assembly to restrict the release of said projecting energy; said inertia weight means being connected to said restricting means.

Claim 7

A safety device assembly as defined in claim 1, wherein said valve means comprises a valve body including a cylindrical valve chamber, said valve chamber having an inlet port, an outlet port and a valve seat between said inlet port and said outlet port; a piston valve slidably inserted in said valve chamber and dividing the latter into a front chamber and a rear chamber; an annular conical seat formed on said piston valve and seated upon said valve seat; a low flow-resistance passage from said inlet port to said front chamber; a second passage from said inlet port to said rear chamber said second passage having high flow-resistance in comparison with said low flow-resistance; a passageway provided between said rear chamber and ambient atmosphere to release gas pressure in said rear chamber; and a breakable seal means tightly disposed in said passageway.

Claim 8

A valve meAns as defined in claim 6, wherein said breakable seal means comprises a metal selected from the group consisting of aluminum and copper.

Claim 9

A valve means as defined in claim 6, wherein said breakable seal comprises a sheet-like material.