Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
AN IMPROVED SLIPPER SOCK
Document Type and Number:
WIPO Patent Application WO/2020/252533
Kind Code:
A1
Abstract:
A slipper-type sock has external friction enhancing formations. The sock defines a frontal plane being substantially perpendicular to an anteroposterior/longitudinal axis from toe to heel of the sock. The formations extend mediolaterally at a frontal plane cross section across a sole of the sock to over both of medial and lateral sides of the sock to allows the friction enhancing formations to adequately purchase the ground even if the sock is inadvertently twisted around the longitudinal axis of the foot.

Inventors:
CHAN JACLYN (AU)
Application Number:
PCT/AU2020/050620
Publication Date:
December 24, 2020
Filing Date:
June 19, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CHAN JACLYN (AU)
International Classes:
A41B11/00; A43B3/10; A43B13/00
Foreign References:
US20050091729A12005-05-05
US20140223630A12014-08-14
US20050144703A12005-07-07
CN105595442A2016-05-25
US10034497B12018-07-31
US20010008672A12001-07-19
KR20110046934A2011-05-06
Attorney, Agent or Firm:
PATENTEC PATENT ATTORNEYS (AU)
Download PDF:
Claims:
Cla i ms

1. A sock com prising external friction enhancing formations wherein the formations extend mediolaterally at at least one frontal plane cross section across a sole of the sock to over both of medial and lateral sides of the sock, the frontal plane being substa ntially perpendicular to an anteroposterior/longitudinal axis from toe to heel of the sock .

2. The sock as claimed in claim 1, wherein the formations extend anteroposteriorly from a bal l of the sock to a rear surface of a heel of the sock.

3. The sock as claimed in claim 2, wherein the rear surface of the heel of the sock extends beyond a 45° contour line from an undersurface of the heel.

4. The sock as claimed in claim 1, wherein the formations extend to an under-toe region of the sock.

5. The sock as claimed in claim 4, wherein formations avoid an upper toe region of the sock.

6. The sock as claimed in claim 1, wherein the formations avoid an anteroposterior bridge gap in the frontal plane cross section.

7. The sock as claimed in claim 6, wherein the bridge gap widens towards the heel.

8. The sock as claimed in claim 1, wherein the friction enhancing formations are point formations.

9. The sock as claimed in claim 8, wherein a region of the sock comprises equidistantly spaced friction enhancing formations.

10. The sock as claimed in claim 9, wherein a region of the sock com prises the equidistantly spaced friction enhancing formations at at least one of a ball and heel of the sock.

11. The sock as claimed in claim 1, wherein the point formations are arranged along anteroposterior and mediolateral contour lines.

12. The sock as claimed in claim 11, wherein upper anteroposterior contour lines diverge towards an ankle region.

13. The sock as claimed in claim 12, wherein lower anteroposterior contour lines diverged towards the rear surface.

14. The sock as claimed in claim 1, wherein the friction enhancing formations com prise silicon.

15. The sock as claimed in claim 14, wherein the friction enhancing formations glow in the dark.

16. The sock as claimed in claim 15, wherein the fixing enhancing formations comprise Strontium aluminate.

17. The sock as claimed in claim 15, wherein the sock is im pregnated with a water repellent agent.

18. The sock as claimed in claim 17, wherein the water repel lent agent comprises DTM - 648 aqueous repelling agent.

19. The sock as claimed in claim 1, wherein the sock com prises a heel protector inserted at the heel.

20. The sock as claimed in claim 19, wherein the heel protector comprises polyurethane foam.

Description:
An improved slipper sock

Field of the I nvention

[1] This invention relates general ly to bedtime and/or slipper socks, and, more particularly, but not entirely, to an im proved slipper sock having enhanced frictional purchase.

Background of the Invention

[2] Bedtime and/or sl ipper socks may be worn at night or around the house without shoes.

[3] As sock material is sl ippery, some slipper socks com prise friction enhancing silicon applied to the undersurface thereof. However, these types of socks may not provide adequate purchase, especial ly when worn incorrectly, a problem particularly for the elderly.

[4] As such, the present invention seeks to provide a sock, which wil l overcome or substantial ly amel iorate at least some of the deficiencies of the prior art, or to at least provide an alternative.

[5] It is to be understood that, if a ny prior art information is referred to herein, such reference does not constitute an adm ission that the information forms part of the common general knowledge in the art, in Austral ia or any other country.

Summa ry of the Disclosure

[6] There is provided herein a sock com prising external friction en hancing formations which extend substantial ly around sides of the sock to yet provide adequate purchase even if the sock is worn incorrectly.

[7] Specifical ly, the sock com prises external friction enhancing formations which extend mediolateral ly at at least one frontal plane cross section across a sole of the sock to over both of medial and lateral sides of the sock. The frontal pi ane is the plane being substantial ly perpendicu lar to an anteroposterior/longitudinal axis from toe to heel of the sock .

[8] As such, whereas the frictional enhancing surface of conventional friction enhanced slipper socks may be ineffective if the sock is inadvertently twisted around the foot, potential ly resulting in sl ipping, the present friction enhancing formations of the present sock extend over the medial and lateral sides of the sock which al lows for the friction enhancing formations to adequately purchase the ground even if the sock is inadvertently twisted around the longitudinal axis of the foot.

[9] Furthermore, the formations may extend anteroposteriorly from the ball of the sock to cover a rear surface of the heel of the sock. The rear surface of the heel of the sock may extend beyond a 45° contour line from an undersurface of the heel . As such, the present friction enhancing formations provide adequate heel strike contact surface area if the heel strikes the ground at an angle, which may otherwise cause sl ipping of conventional slipper socks.

[10] The friction enhancing formations may be point formations, such as silicon dots applied to a surface of the sock using a silk-screen application process. Furthermore, at least a region of the friction enhancing formations may be equidistantly spaced thereby alleviating point pressure making the present sock more comfortable.

[11] In em bodiments, the friction enhancing point formations may fol low anteroposterior and mediolateral contour l ines.

[12] The mediolateral extent of the friction enhancing formations may avoid an anteroposterior bridge gap, thereby not uncomfortably frictionally engaging an upper inner surface of a shoe if worn and reducing manufactu re cost. The bridge gap may widen towards the heel . Furthermore, the friction enhancing formations may avoid an Achilles tendon region of the sock, further enha ncing comfort if worn with a shoe.

[13] The formations along upper anteroposterior contour l ines may diverge upwardly to an ankle region whereas formations along lower anteroposterior contour lines may continue to the rear surface of the heel .

[14] In em bodiments, the friction enhancing formations may glow-in-the-da rk and may com prise a sil icon doped with Strontium alum inate. As such, when worn at night, the glow- in-the-dark friction enhancing formations provide visual guidance feedback for obstacle avoidance. When Strontium alum inate is added to a white sil icone base, we found it has an afterglow of up to 8 hours once adequately charged .

[15] Other aspects of the invention are also disclosed.

Brief Description of the Drawings

[16] Notwithstanding any other forms which may fal l within the scope of the present invention, preferred em bodiments of the disclosure wil l now be described, by way of exam ple only, with reference to the accom panying drawings in which :

[17] Figure 1 shows a lateral side of a sock in accordance with an em bodime nt;

[18] Figure 2 shows a sole of the sock;

[19] Figure 3 shows the bridge of the sock; and

[20] Figure 4 shows a medial side of the sock. Description of Em bodiments

[21] A slipper sock 100 com prises exterior friction enhancing formations 101.

[22] For orientational referencing, the sock 100 will be described with anatom ical referencing wherein Figure 1 shows the lateral side of the sock and Figure 4 shows the medial side of the sock 100.

[23] Anterior and derivatives thereof general ly refer to the toe or the toe region and posterior and derivatives thereof general ly refers to the heel or heel region.

[24] Furthermore, a frontal plane is one which l ies substantia lly perpendicular to an anteroposterior/longitudinal axis from toe to heel .

[25] The formations 101 extend mediolaterally at at least one frontal plane cross-section of the sock 100 to over both of medial and lateral sides of the sock 100.

[26] The side of the sock 100 is defined as being the apex of the medial or lateral side of the sock (i.e. the innermost or outermost point respectively) at a frontal plane cross section, which, in the frontal plane is generally the point at which the si de curvature of the sock 100 transitions perpendicula rly.

[27] As can be seen from Figure 3, the formations 101 extend around the medial and lateral sides to cover at least a portion of an upper surface of the sock 100.

[28] Further with reference to Figure 3, the friction enhancing formations 101 in the at least one frontal plane cross-section may leave a bridge gap 109 across the bridge of the sock 100. As can be fu rther seen from Figu re 3, the bridge gap 109 runs substantial ly anteroposteriorly along the bridge of the sock 100. The bridge gap 109 may widen towards the heel 103.

[29] Furthermore, the formations extend anteroposteriorly from a ball 102 of the sock 100 to a rear surface 104 of a heel 103 of the sock 100. The formations 101 cover the rear surface 104 of the heel 103 in that they transition beyond a 45° contour from the heel 103.

[30] The friction enhancing formations 101 may comprise at least a region wherein the friction enhancing formations 101 are equidistantly spaced . I n a preferred em bodiment, the friction enha ncing formations 101 are equidistantly spaced at pressure points of the sock 101, such as at the ball 102 and the heel 103.

[31] In a preferred em bodiment, the friction enhancing formations 101 com prise point formations which may com prise circular dots which, with reference to Figure 2, may be arranged in a grid following mediolateral contour lines and anteroposterior contour l ines.

[32] The formations 101 may avoid an upper toe region 105 yet extend thereunderneath to an under-toe region 106. [33] With reference to Figu re 1, the formations 101 along upper anteroposterior contour lines 107 may diverge upwardly to an ankle region 108 whereas formations along lower anteroposterior contour l ines may continue to the rear surface 104 of the heel 103.

[34] Manufacture of the sock 100 may com prise a m ulti -stage friction enhancing formation application process wherein the sock 100 is firstly laid flat along the sole to al low the application of the friction enhancing formations on and undersurface thereof whereafter the sock is laid flat along the respective lateral and medial sides to apply the corresponding friction enhancing formations 101 thereto.

[35] In em bodiments, the friction enhancing formations may com prise sil icon and may be applied using a silk-screen appl ication process.

[36] In embodiments, at least one friction enhancing surface may be glow -in-the-dark formations. In accordance with this em bodiment, the friction enhancing formations 101 may com prise a white sil icone and Strontium alum inate.

[37] In embodiments, the sock 100 may be im pregnated with a water repellent agent, such as DTM - 648. The water repellent agent may repel water which could otherwise cause the sock 100 to slip across the ground.

[38] In embodiments, the sock 100 com prises a heel protector inserted at the heel 103. The heel protector may com prise foam material, incl uding memory foam, such as "viscoelastic" polyurethane foam, or low-resilience polyurethane foam . The foam may com prise bubbles or 'cells' that are open, effectively creating a matrix through which air can move.

[39] The foregoing description, for purposes of expla nation, used specific nomenclature to provide a thorough u nderstanding of the invention. However, it will be apparent to one skil led in the art that specific details are not required in order to practi se the invention. Thus, the foregoing descriptions of specific em bodiments of the invention are presented for purposes of ill ustration and description. They are not intended to be exhaustive or to l im it the invention to the precise forms disclosed as obviously many modifications and variations are possible in view of the above teachings. The em bodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best util ize the invention and various em bodiments with various modifications as are suited to the particular use contem pl ated. It is intended that the fol lowing claims and their equivalents define the scope of the invention.

[40] The term "approximately" or sim ilar as used herein should be construed as being within 10% of the value stated unless otherwise indicated.