Patent US138027A successfully refreshed from Google Patents.
Patent US5100701A successfully refreshed from Google Patents.
US5100701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solder-repelling coating for tools
Assignee: Siemens AG
•
Filing: 1988-04-27
•
Granted: 1992-03-31
•
Expires: 2008-04-27
Abstract
Abstract Especially in gripper, insertion and bending tools of automatic insertion machines for electric components, the problem arises, that the production flow is adversely influenced because of solder accumulations at the tools. In machine design it is already known to apply hard material layers on a nitride base to improve tool surfaces; normally, better solder resistance is expected of them. According to the invention at least one second layer is provided as the cover layer with solid-lubricant properties, besides the nitride base layer. The base layer has here preferably a gradual change from high density in the boundary region to the base material of the tool to a porous rough structure at the boundary surface to the cover layer, where the change of the density can be continuous. The metal-nitride layer is advantageously a titanium nitride. With such coatings, the service life of the tools can be increased by more than one order of magnitude.
Inventors
- 👤 Helmut Freller
- 👤 Hans P. Lorenz
- 👤 Friedrich Horauf
- 👤 Peter Schack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:15
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/04; C23C28/044; B; B23; B23K; B23K35/00; B23K35/22; B23K35/224; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
93 words
A solder-repelling coating for a tool, the tool having a surface, the solder-repelling coating comprising: a metal-nitride base layer disposed on the tool surface, said base layer having a porous, rough outer surface; and a cover layer having solid-lubricant properties disposed on said porous, rough outer surface of the base layer, wherein the base layer is characterized by having a varying density, the density gradually and continuously decreasing from a high density, where the base layer contacts the tool surface, in a direction toward the porous, rough outer surface of the base layer.
Claim 2
Dependent Claim
93 words
A solder-repelling coating for a tool, the tool having a surface, the solder-repelling coating comprising: a metal-nitride base layer disposed on the tool surface, said base layer having a porous, rough outer surface; and a cover layer having solid-lubricant properties disposed on said porous, rough outer surface of the base layer, wherein the base layer is characterized by having a varying density, the density gradually and continuously decreasing from a high density, where the base layer contacts the tool surface, in a direction toward the porous, rough outer surface of the base layer.
Claim 3
Dependent Claim
17 words
A coating according to claim 1 wherein the metal-nitride layer is a titanium-nitrogen compound (TiN x ).
Claim 4
Dependent Claim
13 words
A coating according to claim 2 wherein the metal-nitride layer is titanium nitride.
Claim 5
Dependent Claim
18 words
A coating according to claim 1 wherein the cover layer with the solid-lubricant properties is an organic substance.
Claim 6
Dependent Claim
19 words
A coating according to claim 4 wherein the cover layer with the solid-lubricant properties is a fired-on teflon suspension.
Claim 7
Dependent Claim
18 words
A coating according to claim 1 wherein the cover layer with the solid-lubricant properties is an inorganic substance.
Claim 8
Dependent Claim
20 words
A coating according to claim 6 wherein the cover layer with the solid-lubricant properties is silver-molybdenum sulfide (Ag:MoS 2 ).
Claim 9
Dependent Claim
18 words
A coating according to claim 1 wherein the cover layer with the solid-lubricant properties is a metal-carbon combination.
Claim 10
Dependent Claim
14 words
A coating according to claim 8 wherein the metal-carbon combination is silver graphite (Ag:C).
Claim 11
Dependent Claim
14 words
A coating according to claim 8 wherein the metal-carbon combination is zirconium carbon (Zr:C).
Claim 12
Dependent Claim
14 words
A coating according to claim 8 wherein the metal-carbon combination is iron-nickel carbon (FeNi:C).
Claim 13
Dependent Claim
13 words
A coating according to claim 8 wherein the metal-carbon is iron-nickel-chromium carbon (FeNiCr:C).
Claim 14
Dependent Claim
40 words
A coating according to claim 1 wherein the total thickness (d) of the base layer and cover layer together is smaller than 15 μm and wherein the thickness of the base layer alone is about 2/3 of said total thickness.
Claim 15
Dependent Claim
40 words
A coating according to claim 8 wherein the total thickness (d) of the base layer and cover layer together is smaller than 15 μm and wherein the thickness of the base layer alone is about 2/3 of said total thickness.
Claim 16
Dependent Claim
82 words
A layered structure comprising a tool substrate, a metal-nitride base layer coating which coats the tool substrate, and a cover layer having solid lubricant properties which coats the base layer, said base layer having a side of high density which is in contact with the substrate and a porous side which is in contact with the cover layer, wherein the density of the base layer gradually and continuously decreases from the side of high density in the direction of the porous side.
Claim 17
Dependent Claim
82 words
A layered structure comprising a tool substrate, a metal-nitride base layer coating which coats the tool substrate, and a cover layer having solid lubricant properties which coats the base layer, said base layer having a side of high density which is in contact with the substrate and a porous side which is in contact with the cover layer, wherein the density of the base layer gradually and continuously decreases from the side of high density in the direction of the porous side.
Claim 18
Dependent Claim
18 words
The layered structure according to claim 15 wherein the metal-nitride layer is a titanium-nitrogen compound (TiN x ).
Claim 19
Dependent Claim
14 words
The layered structure according to claim 15 wherein the metal-nitride layer is titanium nitride.
Claim 20
Dependent Claim
19 words
The layered structure according to claim 15 wherein the cover layer with the solid-lubricant properties is an organic substance.
Claim 21
Dependent Claim
41 words
The layered structure according to claim 15 wherein the total thickness (d) of the base layer and cover layer together is smaller than 15 μm and wherein the thickness of the base layer alone is about 2/3 of said total thickness.
Claim 22
Dependent Claim
21 words
The layered structure according to claim 15 wherein the cover layer with the solid-lubricant properties is silver-molybdenum sulfide (Ag:MoS 2 ).
References Cited (Backward Citations)
US2740193A
Cited
DE1446741A1
Cited
GB1418807A
Cited
FR2321533A1
Cited
US4204886A
Cited
US4420110A
Cited
GB2130253A
Cited
US4603704A
Cited
US4619865A
Cited
US4643951A
Cited
EP0206121A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |