US4767414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionizing plasma lubricant method
Assignee: Becton Dickinson and Co
•
Filing: 1987-04-10
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Granted: 1988-08-30
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Expires: 2007-04-10
Abstract
Abstract A method to reduce high breakout and sustaining forces between slidable surfaces includes applying a film of lubricant to at least one of the surfaces and subjecting the lubricant and surface to an ionizing plasma. The invention includes articles having slidable surfaces of low breakout and sustaining forces.
Inventors
- 👤 Joel L. Williams
- 👤 David A. Martin
- 👤 David B. Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/14; B05D3/141; B05D3/145; B05D3/148; A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; B29; B29C; B29C59/00; B29C59/14; B05D5/00; B05D5/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
28 words
An article having reduced breakout and sustaining forces comprising a plasma-treated surface, a second surface slidably engaged therewith and a plasma-treated lubricant at the interface of said surface.
Claim 2
Dependent Claim
28 words
An article having reduced breakout and sustaining forces comprising a plasma-treated surface, a second surface slidably engaged therewith and a plasma-treated lubricant at the interface of said surface.
Claim 3
Dependent Claim
13 words
The article of claim 1 wherein said second surface is a plasma-treated surface.
Claim 4
Dependent Claim
11 words
The article of claim 1 wherein said lubricant is silicone oil.
Claim 5
Dependent Claim
28 words
An article having reduced breakout and sustaining forces comprising at least two surfaces in a slidably engaging relationship and a plasma-treated lubricant at the interface of said surfaces.
Claim 6
Dependent Claim
28 words
An article having reduced breakout and sustaining forces comprising at least two surfaces in a slidably engaging relationship and a plasma-treated lubricant at the interface of said surfaces.
Claim 7
Dependent Claim
11 words
The article of claim 4 wherein said lubricant is silicone oil.
Claim 8
Dependent Claim
9 words
The article of claim 1 which is a syringe.
Claim 9
Dependent Claim
9 words
The article of claim 4 which is a syringe.
Claim 10
Dependent Claim
16 words
The article of claim 1 wherein one of said surfaces is a surface of a stopcock.
Claim 11
Dependent Claim
16 words
The article of claim 4 wherein one of said surfaces is a surface of a stopcock.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |