Patents by Inventor Hiroji Yamakawa
Hiroji Yamakawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7081011Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: GrantFiled: October 16, 2002Date of Patent: July 25, 2006Assignee: Nippon Dics Co., Ltd.Inventors: Eiji Kikuchi, Hiroji Yamakawa
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Patent number: 6951486Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: GrantFiled: October 16, 2002Date of Patent: October 4, 2005Assignee: Nippon Dics Co., Ltd.Inventors: Eiji Kikuchi, Hiroji Yamakawa
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Patent number: 6854983Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: GrantFiled: October 16, 2002Date of Patent: February 15, 2005Assignee: Nippon Dics Co., Ltd.Inventors: Eiji Kikuchi, Hiroji Yamakawa
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Patent number: 6629851Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: GrantFiled: October 16, 2002Date of Patent: October 7, 2003Assignee: Nippon Dics Co., Ltd.Inventors: Eiji Kikuchi, Hiroji Yamakawa
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Publication number: 20030054695Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: ApplicationFiled: October 16, 2002Publication date: March 20, 2003Applicant: Nippon Dics Co., Ltd.Inventors: Eiji Kikuchi, Hiroji Yamakawa
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Publication number: 20030045165Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: ApplicationFiled: October 16, 2002Publication date: March 6, 2003Applicant: Nippon Dics Co., LtdInventors: Eiji Kikuchi, Hiroji Yamakawa
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Publication number: 20030045166Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: ApplicationFiled: October 16, 2002Publication date: March 6, 2003Applicant: Nippon Dics Co., Ltd.Inventors: Eiji Kikuchi, Hiroji Yamakawa
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Patent number: 6524118Abstract: Contacts are provided wherewith attachment to a board can be made with adequate attachment strength, without requiring soldering, which can be easily removed from the board without causing damage to occur. Parts of wiring rounds 37 positioned at the extreme diagonally lower right point on a printed circuit board 31 are clamped from above and below by the upper portion of a wiring round side contact part W, indicated by solid lines, facing on a slit 39 positioned at the extreme diagonally lower right point in a base 19, and by the lower portion of a wiring round side contact part W indicated by broken lines. The part of the wiring rounds 37 is clamped by the wiring round side contact part W, by spring forces that operate in directions to tighten that part, which spring forces develop in the upper portion and the lower portion of the wiring round side contact part W.Type: GrantFiled: October 19, 2000Date of Patent: February 25, 2003Assignee: Nippon Dics Co., Ltd.Inventors: Eiji Kikuchi, Hiroji Yamakawa
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Publication number: 20010041467Abstract: A terminal 1 is equipped with elastic legs 3a, 3b having ridges on the feet 19a, 19b thereof, and is equipped with two elastic arms 5a, 5b extending to either side of legs 3a, 3b at an angle somewhat less than perpendicular with respect thereto. Upon insertion of terminal 1 into terminal insertion hole 17 on board 9, legs 3a, 3b become constricted and the tips of arms 5a, 5b come in contact with wiring lands 15. Upon complete insertion of terminal 1 in board 9, elasticity causes the two constricted legs 3a, 3b to become splayed outward, the ridges of feet 19a, 19b catching on the rim of terminal insertion hole 17. Furthermore, the arms 5a, 5b, being bent upward, an elastic force therefrom acts so as to cause the ridges of legs 3a, 3b to press against board 9, securing terminal 1 tightly to board 9.Type: ApplicationFiled: March 1, 2001Publication date: November 15, 2001Applicant: NIPPON DICS CO., LTD.Inventors: Eiji Kikuchi, Hiroji Yamakawa