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US4918277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated tool with non-flat heating surface for avoiding solder-bridging
Assignee: PATENTECH Inc
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Filing: 1988-07-06
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Granted: 1990-04-17
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Expires: 2008-07-06
Abstract
Abstract A heated tool for soldering objects to a plurality of pads which are spaced apart by a selected pitch, comprises a tool member having a heating surface with a plurality of spacer bars thereon, spaced by the pitch between the pads. The spacer bars act to separate one pad from the other to avoid the flow of solder between the pads.
Inventors
- 👤 Gero Zimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:21
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/02; B; B23; B23K; B23K20/00; B23K20/02; B23K20/023; B23K20/025; B23K3/00; B23K3/04; B23K3/047; B23K3/0471; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3405; H01R12/00; H01R12/50; H01R12/59; H01R12/62; H05K2201/00; H05K2201/10; H05K2201/10227; H05K2201/10356; H05K2203/00; H05K2203/01; H05K2203/0195; H05K2203/02; H05K2203/0278; H05K3/3494
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
124 words
A heated tool for connecting objects to a plurality of pads which are spaced from each other by a certain distance, comprising a tool member having a heated bar with a heating surface for each pad and at least one spacer bar connected to said tool member and disposed between said heating surfaces for isolating an object on one pad from an object on another pad, said tool member having different cross-sectional areas at said heating surface and said spacer bar for providing different amounts of heat, each spacer bar having a width selected to be at least greater than the certain distance between the pads for directly contacting the pads to transfer heat to the pads for connecting the objects to the pads.
Claim 2
Dependent Claim
124 words
A heated tool for connecting objects to a plurality of pads which are spaced from each other by a certain distance, comprising a tool member having a heated bar with a heating surface for each pad and at least one spacer bar connected to said tool member and disposed between said heating surfaces for isolating an object on one pad from an object on another pad, said tool member having different cross-sectional areas at said heating surface and said spacer bar for providing different amounts of heat, each spacer bar having a width selected to be at least greater than the certain distance between the pads for directly contacting the pads to transfer heat to the pads for connecting the objects to the pads.
Claim 3
Dependent Claim
23 words
A heated tool according to claim 1 wherein the spacer bar is made as one piece with the tool member and heating surface.
Claim 4
Dependent Claim
31 words
A heated tool according to claim 1 wherein said spacer bar is made as separate parts from said tool member, and is connected to said tool member adjacent said heating surface.
Claim 5
Dependent Claim
25 words
A heated tool according to claim 1 wherein said spacer bar is coated with a material which is different from that of said tool member.
Claim 6
Dependent Claim
18 words
A heated tool according to claim 4 wherein said material coating has a low wetting affinity for solder.
Claim 7
Dependent Claim
27 words
A heated tool according to claim 1 including defining a plurality of spacer bars by cutting slots into the tool member to also form said heating surfaces.
Claim 8
Dependent Claim
73 words
A heated tool for connecting objects to a plurality of pads which are spaced from each other by a certain distance, comprising a tool member having a heating bar with a heating surface for each pad and at least one spacer bar connected to said tool member and disposed between said heating surfaces for isolating an object on one pad from an object on another pad, and a projection extending from spacer bar.
Claim 9
Dependent Claim
73 words
A heated tool for connecting objects to a plurality of pads which are spaced from each other by a certain distance, comprising a tool member having a heating bar with a heating surface for each pad and at least one spacer bar connected to said tool member and disposed between said heating surfaces for isolating an object on one pad from an object on another pad, and a projection extending from spacer bar.
Claim 10
Dependent Claim
38 words
A heated tool according to claim 7 including a plurality of spacer bars, said heating surface with said spacer bars being non-flat, said spacer bars being spaced from each other by about the certain distance between the pads.
Claim 11
Dependent Claim
24 words
A heated tool according to claim 7 wherein the spacer bar is made from as one piece with the tool member and heating surface.
Claim 12
Dependent Claim
31 words
A heated tool according to claim 7 wherein said spacer bar is made as separate parts from said tool member, and is connected to said tool member adjacent said heating surface.
Claim 13
Dependent Claim
25 words
A heated tool according to claim 7 wherein said spacer bar is coated with a material which is different from that of said tool member.
Claim 14
Dependent Claim
18 words
A heated tool according to claim 11 wherein said material coating has a low wetting affinity for solder.
Claim 15
Dependent Claim
27 words
A heated tool according to claim 7 including defining a plurality of spacer bars by cutting slots into the tool member to also form said heating surfaces.
Claim 16
Dependent Claim
45 words
A heated tool according to claim 7 wherein each spacer bar has a width selected to be at least greater than the certain distance between the pads for directly contacting the pads to transfer heat to the pads for connecting the objects to the pads.
Claim 17
Dependent Claim
99 words
A heated tool for connecting objects to a plurality of pads which are spaced from each other by a certain distance, comprising a tool member having a heating bar with a heating surface for each pad and at least one spacer bar connected to said tool member and disposed between said heating surfaces for isolating an object on one pad from an object on another pad, said spacer bar being narrower than the distance between the pads for engaging between the pads when said tool member is brought close to the pads for connecting the objects to the pads.
Claim 18
Dependent Claim
99 words
A heated tool for connecting objects to a plurality of pads which are spaced from each other by a certain distance, comprising a tool member having a heating bar with a heating surface for each pad and at least one spacer bar connected to said tool member and disposed between said heating surfaces for isolating an object on one pad from an object on another pad, said spacer bar being narrower than the distance between the pads for engaging between the pads when said tool member is brought close to the pads for connecting the objects to the pads.
Claim 19
Dependent Claim
38 words
A heated tool according to claim 15 including a plurality of spacer bars, said heating surface with said spacer bars being non-flat, said spacer bars being spaced from each other by about the certain distance between the pads.
Claim 20
Dependent Claim
24 words
A heated tool according to claim 15 wherein the spacer bar is made from as one piece with the tool member and heating surface.
Claim 21
Dependent Claim
31 words
A heated tool according to claim 15 wherein said spacer bar is made as separate parts from said tool member, and is connected to said tool member adjacent said heating surface.
Claim 22
Dependent Claim
25 words
A heated tool according to claim 15 wherein said spacer bar is coated with a material which is different from that of said tool member.
Claim 23
Dependent Claim
18 words
A heated tool according to claim 19 wherein said material coating has a low wetting affinity for solder.
Claim 24
Dependent Claim
27 words
A heated tool according to claim 15 including defining a plurality of spacer bars by cutting slots into the tool member to also form said heating surfaces.
References Cited (Backward Citations)
US4090656A
Cited
US4220845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |