Boots – shoes – and leggings – Antislipping devices – Disengaging
Patent
1995-03-08
1996-09-24
Dayoan, B.
Boots, shoes, and leggings
Antislipping devices
Disengaging
36134, A43C 1500, A43B 500
Patent
active
055578659
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The subject invention concerns an anti-skid device for footwear, in the form of spikes. The spikes are arranged to be displaced from an inactive position in or interiorly of the undersole of a shoe, out through an opening formed in the undersole and to an active anti-skid position on the lower face of the undersole, and reversely back into the retracted position inside the undersole.
Various types of convertible anti-skid device for footwear are known. The features common to all of them is that they are comparatively difficult to reach, and that in order to manipulate them it is necessary to stand on one foot at a time to pull out or otherwise shift each anti-skid device to its active position.
For the purpose of facilitating manipulation of an anti-skid device for footwear a construction, described in the Swedish Patent 9000311-2, has been developed. This construction, which has the advantage of allowing pull-out or retraction of two anti-skid means at the same time, one at the rear and one at the front of the undersole of a shoe, by means of one single control member, does, however, suffer from the disadvantage of insufficient strength. Because the structural components of the device cannot be given the desired dimensions on account of the limited space which is available in a shoe, this prior-art construction has a tendency to frequently malfunction.
SUMMARY OF THE INVENTION
The subject invention provides an anti-skid device for footwear which functions in an extremely reliable manner while at the same time offering the wearer excellent protection on slippery surfaces.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in closer detail in the following with reference to the accompanying drawings, wherein:
FIG. 1 illustrates the anti-skid device in accordance with the invention, in an exploded view,
FIG. 2 illustrates the anti-skid device in a view from below,
FIG. 3 is a longitudinal sectional view through the device in the inner, retracted position, and
FIGS. 4 and 5 are views similar to, respectively, FIGS. 2 and 3, but showing the anti-skid device in the outer position.
DETAILED DESCRIPTION
The drawing figures illustrate one suitable embodiment incorporating one front and one rear anti-skid device mounted in a shoe. Each anti-skid device comprises a rotary rod 1a and 1b, respectively, each having a threaded portion 2a and 2b, respectively, in engagement with an associated sliding member 3 and 4, respectively. The sliding members 3, 4 are arranged for displacement in the longitudinal direction of the undersole 5 in housings 6 and 7, respectively, arranged on the upper face of the shoe undersole 5. Pairs of link arms 8 and 9, respectively, interconnect their associated one of the sliding members 3, 4 with the corresponding one of spike-supporting elements 10, 11, each one of which is provided at one of its edges with spikes 12 and 13, respectively. In accordance with the embodiment illustrated in the drawings, each support element 10, 11 is shaped as a curved plate and follows the movements of the associated slide member 3, 4 inside the housing 6, 7 along a curved track, which ends in a mouth portion 14, 15, formed in the undersole 5. Collars 16, 17 securely attached to their respective one of the rotary rods 1a, 1b, and mounted for free rotational movement inside their respective one of seats 18, 19 in the associated housing 6, 7, are arranged to prevent axial displacement of their respective associated rotary rod 1a, 1b.
In accordance with the embodiment of the invention illustrated in the drawings incorporating one front and one rear anti-skid device in the undersole 5, the rotary rods 1a, 1b are interconneced by means of a flexible means, such as a wire 20, to allow for pliability and flexibility of the undersole 5. In accordance with the shown embodiment, the rotary rod 1a is also provided with a gear drive 21 which is associated with a worm gear 23 on the drive shaft of an electric motor 24. The electric motor 24 is powered by batteries 25.
The
REFERENCES:
patent: 4741115 (1988-05-01), Pozzobon
patent: 5269080 (1993-12-01), Davis
Dayoan B.
Monica Sjosvard
LandOfFree
Anti-skid device for footwear does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-skid device for footwear, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-skid device for footwear will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1920975