AU2007202774A1

AU2007202774A1 - Roller Skate

Info

Publication number: AU2007202774A1
Application number: AU2007202774A
Authority: AU
Inventors: Geon-Ho Im
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-26
Filing date: 2007-06-15
Publication date: 2008-11-13
Also published as: KR20080096024A; US20080265532A1; CN101293138A; EP1994966A1

Description

15/06,2007 FRI 10:28 FAX Smoorenburg Attorneys IP AUSTRALIA [003/019 P/00/011 Regulation 3.2(2)

AUSTRALIA

Patents Act 1990

ORIGINAL

COMPLETE SPECIFICATION STANDARD PATENT Application No.

Lodged: ROLLER SKATE The following statement is a full description of this invention, including the best method of performing it known to us: COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06,2007 FRI 10:29 FAX Smoorenburg Attorneys IP AUSTRALIA Q004/019

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0 (ROLLER SKATE TECHNICAL FIELD The present invention relates to a roller skate which is detachably engaged Inat shoes. In particular to a roller skate which comprises two wheels. In one form, width can be freely adjusted, shoes can be detached when needed irrespective of the sizes of feet, the wheels may be fixed at a lower side when used, and the wheels may be fixed at an upper side when not used by allowing the wheels to omove up and down. However, the invention is not limited to this form.

BACKGROUND ART A conventional roller skate consists of four rollers which slide on a floor and are fixed at a lower surface of a roller skate shoe. In another example of the conventional art, a plurality of rollers is installed in an inline type at a lower surface of a roller shake shoe for enhancing speed and balance.

According to the above conventional roller skate, a user wears roller skate shoes with straps being tied and moves at high speed with a balanced posture for thereby enjoying the exercise.

In the conventional roller skate, since a plurality of rollers are fixed within a roller skate, when the feet sizes do not correctly fit at the roller skate shoes, it is impossible to wear the shoes. So, a roller skate which well fits with the foot size is needed.

When the foot size is not well fitted with the roller skate shoe, it is impossible to wear because, for example, when the user wears larger roller skate shoes, the user may blister his foot or may feel pain thereby causing a safety issue. In the case of children whose feet grow every second, it is impossible to use the roller skate for a desired long time period since their growing feet soon do not fit with the fixed sizes.

In the conventional roller skate we have many rollers and a structure for fixing the rollers, so that the size is too big thereby causing many inconveniences.

When the rollers are worn and need repairs, the maintenance cost increases.

In addition, when the use of the roller skate is finished, the user needs to change and wear the shoes they use for walking. The unworn roller skates should be stored. In this case, the volume of the stored roller skates is too big to easily move or store the roller skates.

COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06,2007 FRI 10:29 FAX Smoorenburg Attorneys IP AUSTRALIA Q005/019 2 The discussion throughout this specification comes about due to the realisation of the inventors and/or the identification of certain prior art problems by the inventors.

Any discussion of documents, devices, acts or knowledge in this specification is included to explain the context of the invention. It should not be taken as an admission that any of the material forms a part of the prior art base or the common general knowledge in the relevant art in Australia or elsewhere on or before the priority date of the disclosure and claims herein.

DISCLOSURE OF THE INVENTION Accordingly, it is an object of the present invention to overcome the abovedescribed conventional problems.

In one aspect of the present invention there is provided a roller skate in which two wheels are provided, and width can be freely adjusted, and the wheels can be detachably attached to a rear side of a shoe with a band, and the wheels are moved down when used, and the wheels are moved up when not used by allowing the wheels to rotate up and down. So, when not used, the user can walk like the shoes are worn in real or normal wear. The movement and wearing are easy, and the size can be freely adjusted, and it is very easy to start, run and stop.

There is provided a roller skate characterized in that a first side plate having a female engaging part 11a and a second side plate 10b having a male engaging part 11lb engaged with the female engaging part 1 a are provided, and the male engaging part 1 lb is fixedly inserted into the female engaging part 11a, and the first and second side plates 10a and 10b are engaged, and a footrest is engaged at each female and male engaging part 11a, 11b for a braking operation, and circular guide plates 12a and 12b are formed at one side of each of the first and second side plates 10a and 1Ob, and first fixing holes 13a and 13b and second fixing holes 14a and 14b are formed at the upper sides of the guide pieces 12a and 12b, and the band engaging holes 15a and 15b engaged with the band 30 are formed at the upper sides of the first and second side plates I0a and and the guide parts 42 corresponding to the guide pieces 12a and 12b are formed one side of each of the first and second wheel frames 40a and 40b, and the receipt grooves 43 are formed at the upper sides of the guide parts 42, and COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06,2007 FRI 10:30 FAX Smoorenburg Attorneys IP AUSTRALIA oo6/o19 3 the fixing pins 44a and 44b are elastically supported by the spring 45, and the guide parts 42 are inserted into the guide pieces 12a and 12b, and the first and second wheel frames 40a and 40b are rotatably engaged at the first and second side plates 10 Oa and 10 Ob with the help of the rivet 50a and washer 50b, and the fixing pins 44a and 44b are selectively inserted into the first and second fixing holes 13a, 13b and 14a, 14b depending on the positions of the first and second wheel frames 40a and BRIEF DESCRIPTION OF THE DRAWINGS The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, wherein; Figure I is a perspective view illustrating an embodiment of the present invention; Figure 2 is a backside perspective view illustrating an embodiment of the present invention; Figure 3 is a disassembled perspective view illustrating an embodiment of the present invention; Figure 4 is a plane view illustrating a construction that a footrest is removed according to the present invention; Figure 5 is a side view illustrating a construction when a first side plate is viewed from an inner side according to the present invention; Figure 6 is a side cross sectional view illustrating a construction when wheels are moved down according to an embodiment of the present invention; Figure 7 is a side cross sectional view illustrating a construction when wheels are moved up according to an embodiment of the present invention; and Figure 8 is a view illustrating a use state when it is worn according to an embodiment of the present invention.

MODES FOR CARRYING OUT THE INVENTION The preferred embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in Figures 1 through 7, the present invention comprises a first side plate 10Oa having a female engaging part 11a, and a second side plate O0b having a male engaging part 11 b engaged with the female engaging part 11 a.

COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06.2007 FRI 10:30 FAX Smoorenburg Attorneys IP AUSTRALIA R007/019 4 As the male engaging part 11 b is fixedly engaged with the female engaging part 11 a, the first side plate 10Oa and the second side plate 1Ob are engaged, and a footrest 20 is inserted into the female and male engaging parts 11a and 11b. When a user uses the roller skate, it is possible to rotate down the rear side of the roller skate, the footrest 20 then contacts with the ground for thereby obtaining a braking function.

A guide hole 16 is formed at both sides of the female engaging part 1 la, and an adjusting nut 17 is provided between the guide holes 16.

A guide rod 18 inserted into the guide holes 16, respectively, is formed at both sides of the male engaging part 11b, and an adjusting bolt 19 is rotatably provided between the guide rods 18 and is engaged with the adjusting nut 17.

The guide rod 18 of the male engaging part 11 b is movably engaged in the guide hole 16 of the female engaging part 1 la. The adjusting bolt 19 of the male engaging part 11 b is thread-engaged with the adjusting nut 17 of the female engaging part t la, so that it is possible to adjust the intervals between the first and second side plates 10a and 10b based on the rotation of the adjusting bolt 19.

Circular guide pieces 12a and 12b are formed at each side of the first and second side plates O10a and 10b, and first fixing holes 13a and 13b and second fixing holes 14a and 14b are formed at the upper sides of the guide pieces 12a and 12b.

Here, the guide pieces 12a and 12b are formed in circular shapes so that the guide parts 42 of the first and second wheels 40a and 40b are prevented from being escaped to the outside.

Band engaging holes 15a and 15b are formed on the upper sides of the first and second side plates 10a and 10b for engaging with the band 30, so that the band 30 is engaged to the band engaging holes 15a and 15b for thereby tightening the user's feet.

According to embodiments of the present invention, the first and second wheel frames 40a and 40b are formed and engaged with the wheels 41a and 41b. Guide part 42 corresponding to the guide pieces 12a and 12b are formed at each side of the first and second wheels frames 40a and COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06.2007 FRI 10:31 FAX Smoorenburg Attorneys IP AUSTRALIA a008/019 A receipt groove 43 is formed at an upper side of the guide part 42, so that the fixing pins 44a and 44b are elastically inserted along with the spring The guide parts 42 are inserted into the guide pieces 12a and 12b, and the first and second wheel frames 40a and 40b are rotatably engaged at the first and second side plates 10a and 10b with the rivet 50a and washer 50b. The fixing pins 44a and 44b are selectively inserted into the first and second fixing holes 13a, 13b, 14a and 14b depending on the positions of the first and second wheel frames 40a and The operation and effects of the roller skate according to an embodiment of the present invention will now be described.

When a user wears and uses the roller skate according to an embodiment of the present invention, it is possible to adjust the width of the shoe with the width of the roller skate. As the adjusting bolt 19 of the male engaging part 11 b is rotated, the adjusting nut 17 of the female engaging part 11 a thread-engaged with the adjusting bolt 19 is pulled or pushed, so that the female engaging part lla fixed with the adjusting nut 17 is pulled or pushed. So, the first side plate 10a is pulled or pushed, so that the interval between the first and second side plates and 10 Ob is adjusted for the width of the shoe so as to adapt to the user's feet.

After the interval between the first and second side plates 10a and 10b is adjusted for the width of the shoe, when it is needed to use the roller skate according to preferred embodiments of the present invention, the fixing pins 44a and 44b are pushed toward the receipt groove 43 of the first and second wheel frames 40a and 40b, and the first and second wheel frames 40a and 40b are rotated downward, and the guide parts 42a of the first and second wheel frames 40a and 40b are rotated along the guide plates 12a and 12b of the first and second side plates 10a and 10b. When they come to the second fixing holes 14a and 14b of the guide pieces 12a and 12b, the fixing pins 44a and 44b lose the recovery force of the spring 45, and are fixedly inserted into the second fixing holes 14a and 14b, and the wheels 41a and 41b of the first and second wheel frames 40a and 40b are protruded to the lower side of the footrest 20 for thereby allowing the enjoying of the roller skate.

When the user wishes to stop the roller skate in the course of operation, the fixing pins 44a and 44b inserted into the second fixing holes 14a and 14b are COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06,2007 FRI 10:31 FAX Smoorenburg Attorneys IP AUSTRALIA Q009/019 6 Spushed toward the receipt groove 43 of the first and second wheel frames Sand 40b, and the first and second wheel frames 40a and 40b are rotated up, and Sthe guide parts 42 of the first and second wheel frames 40a and 40b are rotated along the guide pieces 12a and 12b of the first and second side plates 10a and 10b. When they come to the positions of the first fixing holes 13a and 13b of the guide pieces 12a and 12b, the fixing pins 44a and 44b are fixedly inserted into the first fixing holes 13a and 13b with the help of the recovery force of the spring and the wheels 41a and 41b of the first and second wheel frames 40a and rise to the upper side of the footrest 20. So, the user can walk like wearing their normalshoes.

The user can enjoy the roller skate based on the up and down movements of the first and second wheel frames 40a and 40b and can walk like wearing normal shoes. When the rear side of the roller skate is rotated down in the course of the roller skate, the foot rest 20 contacts with the ground for thereby obtaining a braking operation for quick stop. So, it is possible to prevent a safety accident.

As described above, since it is possible to freely adjust the width, and it is detachably attached to the rear side of the shoe, and the wheels are designed to rotate. When the roller skate is used, the wheels are moved down, and when it is not used, the wheels are moved up, so that it is possible to obtain a walking procedure like wearing normal shoes while enjoying the roller skate. The storing and wearing are easy, and it is possible to adjust the sizes depending on the shoes. It is easy to practice start, running and stop. Since the wheels are provided at only the rear side of the shoe, anyone can enjoy the present invention irrespective of sex and age. It is possible to prevent safety accident in the present invention.

As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06,2007 FRI 10:32 FAX Smoorenburg Attorneys IP AUSTRALIA @010/019 7

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0 bounds of the claims, or equivalences of such meets and bounds are therefore Sintended to be embraced by the appended claims.

"Comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

0 r"- COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15

Claims

1. A roller skate characterized in that a first side plate 10a having a female engaging part 11 a and a second side plate 10b having a male engaging part 11b engaged with the female engaging part 1 la are provided, and the male engaging part 11b is fixedly inserted into the female engaging part 11a, and the first and second side plates 10a and 10b are engaged, and a footrest 20 is engaged at each female and male engaging part 11a, 11b for a braking operation, and circular guide plates 12a and 12b are formed at one side of each of the first and second side plates 10a and 10b, and first fixing holes 13a and 13b and second fixing holes 14a and 14b are formed at the upper sides of guide pieces 12a and 12b, and the band engaging holes 15a and 15b engaged with a band 30 are formed at the upper sides of the first and second side plates 10a and 10b, and guide parts 42 corresponding to the guide plates 12a and 12b are formed one side of each of the first and second wheel frames 40a and 40b, and receipt grooves 43 are formed at the upper sides of the guide parts 42, and fixing pins 44a and 44b are elastically supported by a spring 45, and the guide parts 42 are inserted into the guide pieces 12a and 12b, and first and second wheel frames and 40b are rotatably engaged at the first and second side plates 10a and 10b with the help of a rivet 50a and washer 50b, and the fixing pins 44a and 44b are selectively inserted into the first and second fixing holes 13a, 13b and 14a, 14b depending on the positions of the first and second wheel frames 40a and COMS ID No: SBMI-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15 15/06,2007 ERI 10:32 FAX Smoorenburg Attorneys IP AUSTRALIA R012/019 9 0

02. The skate of claim 1, wherein said female engaging part 1 la has a guide Shole 16 at both sides, and an adjusting nut 17 is provided between the guide Sholes 16, and a guide rod 18 inserted into the guide hole 16 is formed at both 'sides of the male engaging part 11b, and an adjusting bolt 19 engaged with the adjusting nut 17 is rotatably formed between the guide rods 18, and the guide rod 18 of the male engaging part 11 b is movably inserted into the guide hole 16 of the female engaging part 11a, and the adjusting bolt 19 of the male engaging part o 11 b is engaged with the adjusting nut 17 of the female engaging part 11 b, and the interval between the first and second side plates 10a and 10b is adjusted depending on the rotation of the adjusting bolt 19.

3. A roller skate substantially as described herein with reference to at least one of the accompanying drawings. COMS ID No: SBMI1-07779089 Received by IP Australia: Time 10:35 Date 2007-06-15