US4823217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuiting device
Assignee: Canon Electronics Inc
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Filing: 1987-08-27
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Granted: 1989-04-18
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Expires: 2007-08-27
Abstract
Abstract A circuiting device comprising a flexible base member having end portions to be fixed, a movable portion therebetween and conductor patterns carried on the base member. Parts of the portions to be fixed adjacent to the movable portion are covered by protective films which prevent solder from flowing to the movable portion from the portions to be fixed. This arrangement prevents disconnection and short circuit in the conductor patterns on the circuiting device, and facilitates connecting operations.
Inventors
- 👤 Minoru Kato
- 👤 Yutaka Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:18
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/4806; G11B5/486; G11B5/127; G11B5/17; H; H05; H05K; H05K1/00; H05K1/02; H05K1/11; H05K1/118; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3405; H05K3/3452; H05K1/117; H05K2201/00; H05K2201/09; H05K2201/09818; H05K2201/09909; H05K2201/10; H05K2201/10227; H05K2201/10287
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
220 words
A circuiting device comprising: a flexible base member including at least one end portion having a first width, a second portion adjacent said at least one end portion having a second width, and electrical insulating properties, said first width being greater than said second width; an electrical wiring portion disposed on at least one surface of said base member; at least one connecting portion disposed on said at least one end portion having said first width and on at least one end of said electrical wiring portion for connecting electrically said electrical wiring portion to an external circuit, said electrical wiring portion being movable relative to said at least one connecting portion; and at least one insulating protective film disposed on said at least one end portion having said first width and in a direction intersecting said electrical wiring portion, said at least one insulating protective film having the shape of a stripe and covering only a portion of said electrical wiring portion having a specified width in the direction from said connecting portion to said electrical wiring portion, said at least one insulating protective film being adjacent to an area for making an electrical connection with said external circuit, whereby a connecting material comprising said connecting portion is prevented from flowing from said connecting portion to said second portion.
Claim 2
Dependent Claim
220 words
A circuiting device comprising: a flexible base member including at least one end portion having a first width, a second portion adjacent said at least one end portion having a second width, and electrical insulating properties, said first width being greater than said second width; an electrical wiring portion disposed on at least one surface of said base member; at least one connecting portion disposed on said at least one end portion having said first width and on at least one end of said electrical wiring portion for connecting electrically said electrical wiring portion to an external circuit, said electrical wiring portion being movable relative to said at least one connecting portion; and at least one insulating protective film disposed on said at least one end portion having said first width and in a direction intersecting said electrical wiring portion, said at least one insulating protective film having the shape of a stripe and covering only a portion of said electrical wiring portion having a specified width in the direction from said connecting portion to said electrical wiring portion, said at least one insulating protective film being adjacent to an area for making an electrical connection with said external circuit, whereby a connecting material comprising said connecting portion is prevented from flowing from said connecting portion to said second portion.
Claim 3
Dependent Claim
36 words
A circuiting device as claimed in claim 1, wherein said area has an area required to hold a connecting material when said electrical wiring portion is connected electrically to said external circuit by said connecting material.
Claim 4
Dependent Claim
47 words
A circuiting device as claimed in claim 1, wherein said flexible base member has an elongated plate and has at least one end fixed mechanically to said external circuit, and said insulating protective film is disposed on a portion of the fixed end other than said area.
Claim 5
Dependent Claim
33 words
A circuiting device as claimed in claim 1, wherein said flexible base member is a flexible printed circuit board and said electrical wiring portion is printed wiring on said flexible printed circuit board.
Claim 6
Dependent Claim
21 words
A circuiting device as claimed in claim 1, wherein said insulating protective film is made of resist, adhesive or plastic film.
Claim 7
Dependent Claim
48 words
A circuiting device as claimed in claim 1, wherein said connecting portions are disposed at both ends of said flexible base member and said pair of connecting portions are electrically connected by said electrical wiring portion, said pair of connecting portions being movable with respect to each other.
Claim 8
Dependent Claim
265 words
A magnetic head supporting assembly comprising: a magnetic head; a member for supporting said magnetic head; and a circuiting device connecting said magnetic head to external circuits, said circuiting device including a flexible base member having at least one portion to be fixed and a movable portion adjacent to and movable relative to said at least one portion to be fixed, said at least one portion having a first width and said movable portion having a second width, said first width being greater than said second width; an electrical wiring portion disposed on at least one surface of said base member, said electrical wiring portion having an end and being formed on both said portion to be fixed and said movable portion; at least one connecting portion provided on said at least one portion to be fixed and at said end of said electrical wiring portion as an integral portion of said electrical wiring portion to at least one external circuit by a connecting material, said at least one connecting portion and said electrical wiring portion being disposed on said flexible member; and at least one protective film formed on surface areas of said base member in the vicinity of said at least one connecting portion and between said at least one connecting portion and said movable portion in a direction intersecting said electrical wiring portion, said at least one protective film having the shape of a stripe and covering only a portion of said electrical wiring portion so that said connecting material is prevented from flowing from said connecting portion to said movable portion.
Claim 9
Dependent Claim
265 words
A magnetic head supporting assembly comprising: a magnetic head; a member for supporting said magnetic head; and a circuiting device connecting said magnetic head to external circuits, said circuiting device including a flexible base member having at least one portion to be fixed and a movable portion adjacent to and movable relative to said at least one portion to be fixed, said at least one portion having a first width and said movable portion having a second width, said first width being greater than said second width; an electrical wiring portion disposed on at least one surface of said base member, said electrical wiring portion having an end and being formed on both said portion to be fixed and said movable portion; at least one connecting portion provided on said at least one portion to be fixed and at said end of said electrical wiring portion as an integral portion of said electrical wiring portion to at least one external circuit by a connecting material, said at least one connecting portion and said electrical wiring portion being disposed on said flexible member; and at least one protective film formed on surface areas of said base member in the vicinity of said at least one connecting portion and between said at least one connecting portion and said movable portion in a direction intersecting said electrical wiring portion, said at least one protective film having the shape of a stripe and covering only a portion of said electrical wiring portion so that said connecting material is prevented from flowing from said connecting portion to said movable portion.
Claim 10
Dependent Claim
48 words
A circuiting device as claimed in claim 7, wherein said connecting portions are disposed at both ends of said flexible base member and said pair of connecting portions are electrically connected by said electrical wiring portion, said pair of connecting portions being movable with respect to each other.
References Cited (Backward Citations)
US4188714A
Cited
US4432027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |