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US 3,946,359 AGranted
Motor vehicle safety and/or warning devices
OwnerHenning Morgan Hendersoninventor
Life of this patent
Estimating the term…
Abstract
A device for fitment to a motor vehicle and adapted to close a circuit upon excessive accelerative, decelerative or centrifugal forces being applied thereto, the circuit including means for preventing the closure thereof from being registered for a predetermined length of time in order to avoid registration of such closure as a result of bumps or the like in a road, the registration of closure being effected by a counter and/or audible alarm.
Claims11
Apparatus for indicating excessive accelerative, decelerative and centrifugal forces acting on a moving vehicle, comprising:
- at least one switch means;
- means mounting said switch means on a base member for movement from an open to a closed position upon application of an excessive inertial force to said base member;
- and
- circuit means coupled to said switch means for indicating and recording when said switch means is in the closed position, said circuit means including time delay means for delaying the activation of said circuit means to indicate and record said closed position until said switch means has remained closed for a period of time from about 0.1 to about 0.5 second.
1 more element
Dependencies are inferred from the claim text.