Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4747438 | Structure of automobile tire friction-increasing auxiliary device The present invention relates to an improved structure of an automobile tire auxiliary device, especially relates to such a device capable of holding the tire to step up the friction force of the tire through a recess and an adjustable lug on the claw pla... | 05/31/1988 |
| 4387930 | Vehicle traction device An apparatus for providing additional traction to the wheels of a vehicle during inclement conditions utilizes an adapter to accommodate its use with a variety of sizes of vehicle wheels and has features to permit its convenient installation and removal f... | 06/14/1983 |
| 4291922 | Anti-skid mechanism for wheeled vehicle There is disclosed an anti-skid mechanism for a wheeled vehicle suitable for attachment to the outer surface of at least two wheels of said vehicle. The mechanism includes a central flanged disk adapted to be mounted on the outer surface of the wheel, an ... | 09/29/1981 |
| 4261622 | Automotive vehicle wheel for travel on ice or snow A wheel for replacing a conventional rear wheel of an automotive vehicle, for travel on deep snow or ice-covered surfaces; the wheel including a circular wheel plate of steel, and teeth around its periphery, which each comprises a steel crosshead welded t... | 04/14/1981 |
| 4246691 | Traction device The traction device of the invention is for use with a vehicle wheel supported by lugs and having a tire. The traction device has a base with openings for the reception of at least two but less than all, the lugs for supporting the base. A plurality of sp... | 01/27/1981 |
