[특허]Magnetic jewelry clasp

Fuhrman,Esther C.; Fuhrman,Robert J.

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특허 상세정보

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Magnetic jewelry clasp

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A44C-017/02 A44C-017/00 A44C-005/00
미국특허분류(USC)	063/003.1; 063/900; 063/029.2; 063/003; 024/303
출원번호	US-0779433 (2004-02-13)
등록번호	US-7334433 (2008-02-26)
발명자 / 주소	Fuhrman,Esther C. Fuhrman,Robert J.
출원인 / 주소	Fuhrman,Esther C. Fuhrman,Robert J.
대리인 / 주소	Feldman Law Group
인용정보	피인용 횟수 : 13 인용 특허 : 12

초록
▼

A jewelry clasp having a pair of housings at the free ends of a piece of jewelry and are affixed together by magnetic forces. Each housing has a permanent magnet located therein and which magnets are attracted to each other when the housings are brought together. There is a safety catch on one of the housings having a protuberance extending therefrom that enters a slot in the other body. The slot passes entirely through the housing so that the protuberance can enter the slot in a first orientation and in a second orientation where one housing is inverted 180 degrees from the first orientation. The safety catch also includes a nib that aligns with an indentation formed in the slot and the entering of the nib into the indentation can be felt and/or heard by the wearer to provide assurance that the safety catch is in its locked position.

대표
청구항
▼

We claim: 1. A jewelry clasp comprising, a first housing, the first housing including a distal end and a proximal end, the proximal end containing a permanent magnet having a facing surface, and the distal end including a safety catch, a second housing, the second housing having a first and second external surfaces, the second housing further including an opening located on a front section of said second housing, a permanent magnet having a facing surface located on a middle section of said second housing, and a slot located on a rear section of said second housing, said permanent magnets both being magnetized so that the line of greatest magnetic force is perpendicular to the facing surfaces, said facing surfaces of the permanent magnets attracted to each other when positioned proximate to each other and within the field of the magnetic forces, whereby said safety catch has one end pivotally mounted to the distal end of the first housing and has a protuberance extending outwardly from the other end, the protuberance having a free end, said slot of said second housing passes fully through the second housing to be accessible through both said first and said second external surfaces, and said safety catch is rotatable about the pivotal mounting to a locked position wherein the free end of the protuberance enters the slot through either the first or second external surfaces of the second housing to retain the first and second housings together. 2. The jewelry clasp of claim 1 wherein the first housing has an opening and the permanent magnet in the second housing fits into the opening in the first housing to place the permanent magnets in close proximity to each other to magnetically attract each other. 3. The jewelry clasp of claim 1 wherein the safety catch has a straight member pivotally mounted to the first housing and the protuberance extends from the free end thereof at an angle of about 90 degrees. 4. The jewelry clasp of claim 1 wherein the slot has an outer surface having at least one indentation and said protuberance has at least one protruding nib that snaps into the at least one indentation when said safety catch is in said locked position to hold the first and second housings together. 5. The jewelry clasp of claim 1 wherein said at least one indentation is located about equidistant between each of the first and second external surfaces of the second housing. 6. The jewelry clasp of claim 5 wherein the indentation is formed in a spring steel material. 7. The jewelry clasp of claim 1 wherein the safety catch has a magnetically attractable material or magnet that is attracted to the permanent magnet located in the second housing. 8. The jewelry clasp of claim 7 wherein the magnetically attractable material comprises a magnet or steel plate affixed along an internal surface of said safety catch. 9. The jewelry clasp of claim 1 wherein the free end of the protuberance extends beyond the depth of the slot thereby allowing the free end of the protuberance to protrude from the jewelry clasp. 10. A method of completing the connection of a jewelry clasp said methods comprising the steps of: providing a first housing having a jewelry chain affixed thereto and having a magnetic surface and a safety catch, providing a second housing having a jewelry chain affixed thereto, a pair of oppositely disposed external surfaces and having a magnetic surface, a slot and an opening; joining the first and second housings together by aligning and facing the magnetic surfaces facing each other; providing the safety catch to be movably affixed to the first housing and adapted to be movable to a locked position, said safety catch having a free end; providing the slot in the second housing to extend entirely through the second housing and opening through both of said oppositely disposed external surfaces; engaging the first and second housings together to align the magnetic surface of the first housing with the magnetic surface of the second housing abutted together to complete the connection of the first and second housings together; and moving the safety catch to the locked position wherein the free end of the safety catch enters into the slot through the opening in either of the oppositely disposed external surface. 11. The method as defined in claim 10 wherein the step of providing a first housing and the step of providing a second housing comprises providing a first housing and a second housing having permanent magnets disposed therein forming the magnetic surfaces. 12. The method as defined in claim 10 wherein the step of providing a safety catch comprises providing a safety catch having a nib extending outwardly therefrom and said step of providing a slot comprises providing a slot having an indentation formed therein and said step of moving the safety catch to a locked position comprises engaging the nib within the indentation. 13. The method as defined in claim 10 wherein the step of providing a safety catch comprises providing a safety catch having a magnet or magnetically attractable material that is attracted to the permanent magnet located in the second housing. 14. The method as defined in claim 13 wherein the step of providing a safety catch comprises providing a safety catch having a nib extending outwardly therefrom and said step of moving the safety catch to a locked position comprises moving the safety catch to a position where the magnetically attractable material is attracted to the permanent magnet in said second housing. 15. The method as defined in claim 13 wherein the step of providing a safety catch comprises providing a safety catch having a magnetically attractable material located on a surface that overlies one of the oppositely disposed external surfaces of the second housing. 16. The method as defined in claim 13 wherein the step of providing a safety catch comprises providing a safety catch having the magnet or magnetically attractable material located on a surface that abuts against an internal surface of the slot formed in the second housing. 17. The method as defined in claim 10 wherein the step of moving the catch to the locked position allows the free end of the protuberance to extend beyond the depth of the slot thereby allowing the free end of the protuberance to protrude from the jewelry clasp.

이 특허에 인용된 특허 (12)

이 특허를 인용한 특허 피인용횟수: 13

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특허 상세정보

Magnetic jewelry clasp

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이 특허에 인용된 특허 (12)

이 특허를 인용한 특허 피인용횟수: 13

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Magnetic jewelry clasp

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이 특허에 인용된 특허 (12)

이 특허를 인용한 특허 피인용횟수: 13

IPC 상위 출원인

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IPC 상세정보(version : 201201)

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