Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1980-07-03
1983-04-05
Powell, William A.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152225C, B60C 2700
Patent
active
043788335
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an anti-skid device for vehicles comprising a number of frame-shaped gripping elements in mounted condition distributed along the periphery of the wheel of the vehicle, each one having two gripping portions in opposite arrangement occupying positions at a certain distance from each other and spanning a portion of the wheel tread of the vehicle from one side of the wheel to its other side. Other likewise opposing frame portions connected with said gripping portions having an extension in a direction towards the center of the wheel on each side of the same; means for connecting together said gripping elements with each other on one side of the wheel of the vehicle being provided, so that the gripping portions of the gripping elements exercise a pressure force against the tread of the tire. The connecting means extend between portions of the frame of opposing gripping elements, which extend in inwards direction on the side of the wheel.
It is a principal object of the invention to provide an anti-skid device for vehicles, which is adaptable to vehicle wheels with dimensions varying within a comparatively wide range, and which is independent of the design of the rim, and further permits being fixed to the vehicle wheel by means of a simple operation, for example after getting stuck with spinning wheels, without any risk of damage to the wheel housing of the vehicle or to its brake system, and this at the same time as the device in an efficient manner follows the movements of the tire without any danger of loosing its grip on the wheel.
This object is reached by means of an anti-skid device according to the invention, which is essentially characterized by the frame being open on the outside of the wheel, frame portions being positioned on this side and connected with said gripping portions comprising arms extending along the side of the wheel, which arms in mounted condition by means of said connecting means are connected together with corresponding arms of another gripping element.
The invention will be described in the following, reference being made to the accompanying drawings, in which
FIG. 1 is a perspective view taken from the inside of the wheel of a vehicle provided with an anti-skid device designed according to the invention;
FIG. 2 is a corresponding perspective view of the same anti-skid device but taken from the outside of the wheel of the vehicle,
FIGS. 3-5 are three views of the anti-skid device in unassembled condition as seen from different sides,
FIG. 6 is a perspective view corresponding to the one in FIG. 2 showing the anti-skid device provided with an alternative fastening means,
FIGS. 7-8 are perspective views corresponding to the ones in FIGS. 1 and 2 and showing a wheel of a vehicle equipped with an anti-skid device according to a second embodiment of the invention,
FIG. 9 is a side elevational view of a gripping shackle forming part of the anti-skid device shown in the FIGS. 7 and 8,
FIG. 10 shows the same gripping shackle as seen from the right in FIG. 9, and
FIG. 11 is a view of a portion of the gripping shackle as seen in the direction of the arrow XI in FIG. 9.
The anti-skid device illustrated in FIGS. 1-5 has two frame-shaped gripping elements in their entirety indicated with 1 and interconnected by means of straps 5. The frame formed by the gripping elements is open on the outside of the wheel. Each one of the gripping elements grips around the periphery of the tire by means of a hook-shaped portion having two gripping portions 2 located at a certain distance from each other and in transverse direction extending over the tread of the tire. Both of the gripping portions 2 are interconnected by means of a frame portion 3 located on the inside of the wheel of the vehicle and on the outside of said wheel of the vehicle each one of them continues in an arm 4 extending over the side of the wheel, the free end portion of said arm being bent into the shape of a loop 4a. In the embodiment shown the arms 4 essentially extend in radial direction relative to t
REFERENCES:
patent: 2747639 (1956-05-01), Mertz
patent: 3856069 (1974-12-01), Giannone
patent: 3918504 (1975-11-01), Prokesch
patent: 4154278 (1979-05-01), Casoni
patent: 4155391 (1979-05-01), Dieck
Lindblad Hans
Lindblad Karl-Erik
Lindblad Lennart
Lindblad Sven-Olof
Bokan Thomas
Powell William A.
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