Abstract
Provided is an apparatus designed to engage tire chains on motorized vehicles when hazardous road conditions are present, including snow or ice. Moreover, the chains are designed to be deployed manually from inoperative to operative positioning by raising and lowering the apparatus handle. A rotating quick deploy chain wheel at the bottom of the apparatus throws a plurality of chains between the tire and road surface generating vehicle traction. This utility patent for tire chains will provide a cost effective, simple method for putting on and taking off snow tire chains. Existing automatic chain systems characteristically require electronics, motors or a pneumatic system. The embodiment of this apparatus is the simplicity of locking a handle and the chains are engaged. Releasing the handle and the chains are disengaged.
Claims
1. A snow chain apparatus to be mounted on a vehicle axle, comprising: a base plate for mounting to or near a vehicle axle; a chain wheel having a plurality of chains to selectively position under a tire of the vehicle axle when in use, and to store away from the tire when not in use; a pivot arm connecting the chain wheel to the base plate; a lift spring operable in conjunction with the pivot arm between a contracted position in a chain-off mode, and an extended position in a chain-on mode; a handle to move the pivot arm between the chain-off mode and the chain-on mode; and a movable part vertical lock positioned atop the base plate in conjunction with lowering the handle, wherein the vertical lock restricts any vertical movement locking the chain wheel in a lowered position.
2. The apparatus of claim 1, further comprising a movable part horizontal lock keyed and positioned through the base plate in conjunction with lowering the handle in the chain-on mode, the horizontal lock restricting horizontal movement of the handle and locking the chain wheel in a lowered position against the tire sidewall.
3. The apparatus of claim 2, wherein the handle in the lowered position forces an arm lock to engage the pivot arm and firmly fix the chain wheel against the tire sidewall.
4. The apparatus of claim 3, wherein the arm lock is fastened to the movable part vertical lock, the movable part vertical lock restricting the vertical movement of the arm lock resulting in a locked down pivot arm.
5. The apparatus of claim 4, wherein in a locked position the chain wheel rotates freely on a weather sealed bearing.
6. The apparatus of claim 5, wherein the handle pulls horizontally to disengage the vertical lock from atop the base plate, so that vertical movement of moveable part vertical lock subsequently releases the arm lock and frees the pivot arm; and wherein after the moveable part arm is free, the lift spring raises the chain wheel to a disengaged and non-operable position.
7. A snow chain apparatus to be mounted on a vehicle axle, comprising; a base plate for mounting to or near a vehicle axle; a chain wheel having a plurality of chains to selectively position under a tire of the vehicle axle when in use, and to store away from the tire when not in use; a pivot arm connecting the chain wheel to the base plate; a lift spring operable in conjunction with the pivot arm between a contracted position in a chain-off mode, and an extended position in a chain-on mode; a handle to move the pivot arm between the chain-off mode and the chain-on mode; and a lock release to maintain spacing between a vertical lock and a top of the base plate to simplify engaging and disengaging the chain wheel.
Description
BRIEF DESCRIPTION OF DRAWINGS
(1) FIG. 1 depicts a side view embodiment of this invention configured in a disengaged, chain off mode. The side perspective view showing the apparatus attached to the vehicle axle.
(2) FIG. 2 depicts a front view embodiment of this invention configured in an engaged, chain on mode. The front perspective view showing the apparatus attached to the vehicle axle.
(3) FIG. 3 depicts a side view of the chain wheel. The side perspective view showing the chain wheel assembly detached from the apparatus.
(4) FIG. 4 depicts a top view of anti-tangle chain separator. The detail view showing the of anti-tangle chain separator detached from the chain wheel.
(5) FIG. 5 depicts a side view of impact reduction chain assembly. The side detail view showing the impact reduction chain assembly detached from the chain wheel.
(6) FIG. 6 depicts a top detail view of the wheel ring. The top detail view of the ring wheel showing the ring wheel assembly detached from the chain wheel.
(7) FIG. 7 depicts a side view embodiment of this invention configured in a disengaged, chain off mode. The side perspective view showing the apparatus detached from the vehicle axle.
(8) FIG. 8 depicts a side view embodiment of this invention configured in an engaged, chain on mode. The side perspective view showing the apparatus detached from the vehicle axle.
(9) FIG. 9 depicts a top view embodiment of this invention configured in an engaged, chain on mode. The top perspective view showing the apparatus base plate and locking strategy.
(10) TABLE-US-00001 REFERENCE NUMERALS IN THE DRAWINGS 28 apparatus disengaged 29 tire 30 u bolts 31 axle 32 base plate 33 vertical lock 34 lift spring 35 chains 36 impact spring 37 chain wheel 38 handle 39 arm 40 apparatus engaged 41 bearing 42 chain fastener 43 anti-tangle ring 44 chain separator 45 chain separator 46 ring to base connect 47 ring to separator connect 48 ring fastener 49 bi-directional joint 50 lock release 51 travel restrictor 52 bi-directional stop 53 u bolt slot 54 bi-directional axis 55 lower contact joint 56 arm lock 57 horizontal lock
DETAILED DESCRIPTION OF THE INVENTION
(11) Referring to the Figures, wherein like numerals indicate like or corresponding parts throughout the several views, FIG. 1 depicts a side view embodiment of this apparatus generally shown at 28, configured in a disengaged, chain off mode. The side perspective view showing a tire 29 and axle 31 with the apparatus mounted to the driver side rear axle 31 wheel. Disengaged or chain off mode 28 is described when the apparatus is in the up position and the chain wheel 37 is not in contact with the tire 29 sidewall preventing chains 35 from spinning and contacting road surface. The apparatus base plate 32 provides a channel guide permitting the apparatus handle 38 to be locked in chain off mode 28. The adjustable apparatus base plate 32 is connected to the vehicle axle 31 axle u bolts 30. Unlocking and raising the apparatus handle 38 releases the lift spring 34 allowing the chain wheel 37 to lift up and disengage from the tire 29 sidewall. In the chain off mode 28, the lift spring 34 connected to the base plate 32 and arm 39 is contracted. The initial lift spring 34 tension load is sufficient to hold the chain wheel 37 in an upward chain off mode 28 position.
(12) As shown in FIG. 2 a front view embodiment of this invention configured in an apparatus engaged, chain on mode is generally shown at 40. The front perspective view showing a tire 29 and axle 31 with the apparatus mounted to the driver side rear axle 31 wheel. Engaged or chain on mode 40 is described when the apparatus is in the down position and the chain wheel 37 is in contact with the tire 29 sidewall allowing chains 35 to spin and contact road surface beneath the tire 29. Chain on engages the chain wheel 37 to the tire 29 sidewall causing the chain wheel 37 to rotate throwing a plurality of chains 35 under the tire 29 providing vehicle traction. The apparatus base plate 32 provides a channel guide permitting the handle 38 to be locked in chain on mode 40. In the chain on mode 40, the lift spring 34 connected to the base plate 32 and arm 39 is fully extended creating tension. This tension load is static until the handle 38 is released.
(13) As shown in FIG. 3 a side view perspective showing a chain wheel 37. The movable part chain wheel 37 rotates counterclockwise when in contact with the sidewall of the tire throwing a plurality of chains between the tire and road surface generating traction. The moveable part chain wheel 37 rotates on an axis forward or reverse facilitated by a sealed weather resistant bearing 41. The movable part chain wheel 37 is fastened to the chain separator 45 with six chain fastener 42 bolts. The anti-tangle ring 43 is fastened to chain separator 45 with twelve separator fastener 44 bolts. This novel chain wheel 37 and chain separator 45 in conjunction with the anti-tangle ring 43 design induces quick chain deployment with unsubstantial chain tangle.
(14) As shown in FIG. 4 a top view detail showing the chain separator 45. The chain separator 45 is fastened to the chain wheel with six chain fastener bolts thru the separator wheel connect 46 hole. Holes are separated equally at sixty degrees. The chain separator 45 is also fastened to the anti-tangle ring with twelve separator fastener bolts thru the separator ring connect 47 hole. The chain separator 45 restricts chain movement to specific paths minimizing chain tangle when the vehicle is in motion at low speeds, forward or reverse drive.
(15) As shown in FIG. 5 a side detail view perspective showing the chain 35 and impact spring 36. The chain 35 and impact spring 36 absorb shock and impact of the vehicle tire rolling over bumps and potholes. The impact spring 36 flexes when the chain 35 is under the vehicle tire and a force multiplier is encountered. The impact resistant chain design substantially reduces the force returned to the chain wheel apparatus. The force reduction of the impact spring 36 is critical to the chain apparatus impact survival.
(16) As shown in FIG. 6 a top detail view perspective showing the anti-tangle ring 43. The anti-tangle ring 43 restricts chain from winding together at low speeds. The antitangle ring 43 in conjunction with chain separator design induce quick chain deployment with unsubstantial chain tangle. The anti-tangle ring 43 creates a channel between the chain wheel and anti-tangle ring 43 allowing the chains to systematically wrap at low speed and subsequently unwrap at higher rotations with little or no chain tangle.
(17) As shown in FIG. 7 a side view embodiment of this invention generally shown at 28. The side view embodiment showing the apparatus 28 detached from the vehicle axle. The movable part arm 39 is raised and lowered in conjunction with raising and lowering moveable part apparatus handle 38. The bi-directional joint 49 is home at rest when the apparatus 28 is in disengaged, chain off mode. The lift spring 34 returns to a load-free contracted position when unlocked. The lift spring 34 connected to the base plate 32 and the arm 39. The lift spring 34 is calibrated to lift and hold the combined weight of the chain wheel 37 and a plurality of chains. The chain wheel 37 and a plurality of chains 35 are lifted and rotated away from tire sidewall. The apparatus arm 39 is fastened by a bolt to the bi-directional joint 49. The movable part bi-directional joint 49 is fastened to the base plate 32 bi-directional axis 54 bolt facilitating the moveable part arm 39 to rotate vertically and horizontally. Vertical movement is managed by the travel restrictor 51. Horizontal movement is managed by the bi-directional stop 52. Vertical and horizontal movement of the movable part apparatus handle 38 is managed to simplify engaging and disengaging the apparatus. The lock release 50 maintains the correct spacing between vertical lock 33 and top of the base plate 32 to simplify engaging and disengaging the apparatus. In the chain off mode there is no contact between the chain wheel 37 and tire sidewall resulting in no traction being generated by the chain wheel 37.
(18) As shown in FIG. 8 a side view embodiment of this invention generally shown at 40. The side view embodiment showing the apparatus 40 detached from the vehicle axle. The movable part arm 39 is raised and lowered in conjunction with raising and lowering moveable part apparatus handle 38. The movable part arm 39 is lowered when the apparatus 40 is in engaged, chain on mode. The lift spring 34 is extended to a load position when locked. The lift spring 34 connected to the base plate 32 and the arm 39. The lift spring 34 is calibrated to lift the combined weight of the chain wheel 37 and a plurality of chains when the movable part apparatus handle 38 is released. The chain wheel 37 is lowered and locked in contact with the tire sidewall in the chain on mode. The apparatus arm 39 is fastened by a bolt to the bi-directional joint 49. The movable part bi-directional joint 49 is fastened to the base plate 32 bi-directional axis 54 bolt facilitating the moveable part arm 39 to rotate vertically and horizontally. In the chain on mode contact between the chain wheel 37, and tire sidewall generates chain wheel 37 rotation throwing a plurality of chains between the tire and road surface creating instant traction.
(19) As shown in FIG. 9 a top view embodiment of this invention generally shown at 40. The top view embodiment showing the apparatus 40 attached to the vehicle axle. The movable part vertical lock 33 is positioned atop the base plate 32 in conjunction with lowering moveable part handle 38. In this apparatus engaged, chain on mode the vertical lock 33 restricts any vertical movement locking the chain wheel 37 in a lowered position. The movable part horizontal lock 57 is keyed and positioned through the base plate 32 in conjunction with lowering moveable part handle 38. In this apparatus engaged, chain on mode the horizontal lock 57 restricts any horizontal movement locking the chain wheel 37 in a lowered position against the tire sidewall. The movable part handle 38 in this lowered position forces the arm lock 56 to engage the arm 39 firmly fixing the chain wheel 37 against the tire sidewall. The arm lock 56 is fastened to the movable part vertical lock 33. The movable part vertical lock 33 fixed atop base plate 32 restricts the vertical movement of the arm lock 56 resulting in a locked down arm 39. To ensure constant contact between the chain wheel 37 and tire 29 sidewall the lower contact joint 55 is spring loaded forcing chain wheel 37 against the tire 29 creating the friction required to rotate the chain wheel 37. Once the apparatus is in the locked position the chain wheel 37 will rotate freely on a weather sealed bearing 41. To release the lock the operator need only to lift the movable part handle 38 pull horizontally disengaging the vertical lock 33 from atop the base plate 32. This motion allows vertical movement of moveable part vertical lock 33 subsequently releasing the arm lock 56 freeing the arm 39. Once the moveable part arm 39 is free the lift spring 34 will raise the chain wheel 37 to a disengaged non-operable position.
