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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7174935 | Automatic safety tire device An automotive device for increasing the traction on a supporting surface including a body mountable on a wheel hub and carrying a plurality of radially extending traction arms that are mounted for movement between retracted positions and extended positions in which ... | 02/13/2007 |
| 5528891 | Traction control device for a lawn mower A traction control device for a lawn mower comprising a pair of lawn gripping assemblies. A facility is for mounting each lawn gripping assembly onto a side of each rear wheel of the lawn mower, so as to prevent the lawn mower from sliding down a steep sl... | 06/25/1996 |
| 5303992 | Extendable and retractable ground-engaging projections for tracked vehicle An armored tracked vehicle is provided with traction-increasing grousers and a remotely controllable system for extending and retracting the grousers. In a preferred embodiment of the invention, the grousers are extended by a hydraulic system formed of a ... | 04/19/1994 |
| 5022711 | Auxiliary tractor wheel for increased traction An auxiliary traction wheel is provided for use in combination with a tractor wheel so as to provide increased traction for the tractor. The traction wheel includes a pair of spaced apart rims at the perimeter of the wheel defining a channel therebetween.... | 06/11/1991 |
| 4685743 | Wheel anti-skid attachment A vehicle slip protector including a frame to be fixed to a vehicle wheel for rotation therewith, spokes extending radially outward from the center axis of the frame which is aligned with the axle of the wheel, so as to be radially reciprocally slidably m... | 08/11/1987 |
| 4252377 | Blowout protector A vehicle tire blowout protector is disclosed which comprises a first sidewall member with a peripheral shoulder having sufficient strength to support the vehicle. The sidewall member is mounted to the vehicle wheel so that it is adjacent to one side of t... | 02/24/1981 |
| 3995909 | Vehicle anti-skid mechanisms A vehicle anti-skid mechanism is a wheel attachment and fits on the outside of a vehicle wheel. The mechanism includes a central portion having an inner pair of plates between an outer pair of plates and tread members pivoted to each pair of plates. Turni... | 12/07/1976 |
