Patent ID: 8312580

Claim:
An apparatus comprising: a housing which includes a first member, wherein the housing has a length; a knife connected to the housing, wherein the knife at least partially folds into the housing; and a first device for cracking a vehicle windshield, wherein the first device is connected to the housing; and wherein the first device includes a first spring and a second member; wherein the first device is configured with respect to the housing so that the second member of the first device can be compressed into the first member of the housing, to cause the first spring to compress, or the second member of the first device can be expanded away from the first member of the housing, to cause the first spring to expand; wherein the first device is configured with respect to the housing so that the second member of the first device, in a rest state, can only protrude out from the first member of the housing a first distance parallel to the length of the housing; wherein the first device is configured with respect to the housing so that the second member of the first device has a width which is perpendicular to the length of the housing and which is greater than or equal to the first distance; and wherein the first device is configured with respect to the housing so that a force can be applied to the second member which pushes the second member at least partially into the first member of the housing and which causes the first spring to compress.