US4471579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lapping or polishing machine
Assignee: Individual
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Filing: 1982-06-29
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Granted: 1984-09-18
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Expires: 2002-06-29
Abstract
Abstract Lapping or polishing machine, wherein for cooling a plurality of zones of its working face the tool comprises for each of these zones separate supply conduits for fluids at different temperatures and/or rates of throughflow, and there are also provided temperature sensing means with an apparatus for controlling the temperature or rate of throughflow of the fluid.
Inventors
- 👤 Hans-Joachim Bovensiepen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/005; B24B37/015
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A lapping or polishing machine comprising a tool which consists of a flat wheel having on its rear face a plurality of separate concentric annular zones, a plurality of separate supply ducts for supplying fluid to each individual annular zone at different temperatures and/or speeds of throughflow, a respective plurality of separate removal ducts for removing said fluid from each individual annular zone, a plurality of temperature sensors each being located proximate of a working face of the tool and situated above said concentric annular zones, and a device connected to said temperature sensors to the respective supply ducts for controlling the temperature and/or the throughflow rate of the fluid to said concentric annular zones.
Claim 2
Dependent Claim
115 words
A lapping or polishing machine comprising a tool which consists of a flat wheel having on its rear face a plurality of separate concentric annular zones, a plurality of separate supply ducts for supplying fluid to each individual annular zone at different temperatures and/or speeds of throughflow, a respective plurality of separate removal ducts for removing said fluid from each individual annular zone, a plurality of temperature sensors each being located proximate of a working face of the tool and situated above said concentric annular zones, and a device connected to said temperature sensors to the respective supply ducts for controlling the temperature and/or the throughflow rate of the fluid to said concentric annular zones.
Claim 3
Dependent Claim
21 words
The machine according to claim 1 wherein said cencentric annular zones are recesses provided in said rear face of the tool.
Claim 4
Dependent Claim
27 words
The machine according to claim 2, wherein said recesses are closed by a flange supporting the tool and having openings corresponding to said supply and removal ducts.
Claim 5
Dependent Claim
40 words
The machine according to claim 2, wherein each of said supply and removal ducts lead to an annular groove provided in a part rotating with a shaft driving the tool, said grooves debouching in conduits not rotating with said shaft.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |