US3568567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective shield
Assignee: Friedrich Deckel AG
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Filing: 1968-10-30
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Granted: 1971-03-09
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Expires: 1988-10-30
Abstract
Abstract A protective shield for a machine tool is comprised of a curtain made of chain mesh and which hangs downwardly to at least partially surround the machining zone to confine movement of the shavings.
Inventors
- 👤 Walter Seck
- 👤 Johann Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:08
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/08; B23Q11/0866; Y; Y10; Y10T; Y10T408/00; Y10T408/96; Y10T409/00; Y10T409/30; Y10T409/30392; Y10T74/00; Y10T74/21; Y10T74/219
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A protective shield for use with a machine tool to deflect chips during a machining operation, comprising means for connecting said shield to said machine tool to support the shield in the zone of said deflected chips, said shield having a plurality of link members, each link being interconnected to adjacent link members positioned longitudinally and transversely offset therefrom so as to form a unitary, flexible meshlike curtain of substantial height and width, said curtain being secured at one end thereof to a transparent plate, said plate supporting the curtain in a vertical position to surround a portion of a working tool, whereby an operator may view said machining operation through said transparent plate and said flexible curtain can be deformed by a workpiece, and chips therefrom will be deflected by said curtain.
Claim 2
Dependent Claim
133 words
A protective shield for use with a machine tool to deflect chips during a machining operation, comprising means for connecting said shield to said machine tool to support the shield in the zone of said deflected chips, said shield having a plurality of link members, each link being interconnected to adjacent link members positioned longitudinally and transversely offset therefrom so as to form a unitary, flexible meshlike curtain of substantial height and width, said curtain being secured at one end thereof to a transparent plate, said plate supporting the curtain in a vertical position to surround a portion of a working tool, whereby an operator may view said machining operation through said transparent plate and said flexible curtain can be deformed by a workpiece, and chips therefrom will be deflected by said curtain.
Claim 3
Dependent Claim
34 words
A protective shield according to claim 1, wherein each link member comprises a closed wire ring and wherein each of sAid wire rings are interconnected to four adjacent longitudinally and transversely offset wire rings.
Claim 4
Dependent Claim
35 words
A protective shield according to claim 2, wherein said wire rings are made of wire having a thickness of about 0.5 mm. and the diameter of each of said wire rings is approximately 3 mm.
Claim 5
Dependent Claim
26 words
A protective shield according to claim 1, wherein the lateral distance of said curtain from said work tool equals at least said height of the curtain.
Claim 6
Dependent Claim
13 words
A protective shield according to claim 1 wherein said plate is horizontally oriented.
Claim 7
Dependent Claim
12 words
A protective shield according to claim 1 wherein said plate is bell-shaped.
Claim 8
Dependent Claim
12 words
A protective shield according to claim 1 wherein said plate is circular-shaped.
Claim 9
Dependent Claim
15 words
A protective shield according to claim 1, wherein said plate is made of safety glass.
Claim 10
Dependent Claim
16 words
A protective shield according to claim 1 wherein the outer edge of said plate is polygon-shaped.
Claim 11
Dependent Claim
46 words
A protective shield according to claim 1, wherein said machine work tool has a vertical spindle supported by a bearing housing and wherein said connecting means comprises an annular mounting device which includes means for clamping the device to the bearing housing of the said spindle.
Claim 12
Dependent Claim
49 words
A protective shield according to claim 1, in which the annular mounting device has outlet bores for cooling means, said bores extending transversely to the axis of the annular mounting device toward the machining area, said outlet bores being communicable with a connector associated with the annular mounting device.
Claim 13
Dependent Claim
12 words
A protective shield according to claim 1 wherein said plate is oval-shaped.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |