US4401400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Individual
•
Filing: 1980-09-19
•
Granted: 1983-08-30
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Expires: 2000-09-19
Abstract
Abstract A mechine tool includes a movable work table assembled of a base part defining first clamping surface and of an exchangeable table part defining a second clamping surface levelled with the first one and being movable in guideways on the base part; a pallet changer having a rotary table provided with guideways aligned with the guideways on the work table unit supports pallets in the form of the exchangeable table part so that a workpiece can be clamped on one pallet while another workpiece on a second pallet is being operated in the machine.
Inventors
- 👤 Gerhard Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:03
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/14; B23Q7/1426; B23Q7/1431; B23Q1/00; B23Q1/25; B23Q1/64; B23Q1/66; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5196; Y10T408/00; Y10T408/52; Y10T408/54; Y10T408/545
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
145 words
A machine tool comprising a coordinate work table unit; means supporting said table unit for movement in a horizontal plane; means for moving a processing tool in vertical directions relative to said table unit; said table unit including a fixed base part and guiding means for engaging and guiding an exchangeable part which is movable relative to the base part, said base part and said exchangeable part having each an upper surface levelled in one plane for supporting and clamping a workpiece, a pallet changer arranged at a fixed position relative to said work table unit, said pallet changer being provided with additional guiding means arranged at the level of said first mentioned guiding means for engaging and guiding at least two exchangeable parts, and means disconnectably engaging and displacing an exchangeable part between said work table unit and said pallet changer and vice versa.
Claim 2
Dependent Claim
145 words
A machine tool comprising a coordinate work table unit; means supporting said table unit for movement in a horizontal plane; means for moving a processing tool in vertical directions relative to said table unit; said table unit including a fixed base part and guiding means for engaging and guiding an exchangeable part which is movable relative to the base part, said base part and said exchangeable part having each an upper surface levelled in one plane for supporting and clamping a workpiece, a pallet changer arranged at a fixed position relative to said work table unit, said pallet changer being provided with additional guiding means arranged at the level of said first mentioned guiding means for engaging and guiding at least two exchangeable parts, and means disconnectably engaging and displacing an exchangeable part between said work table unit and said pallet changer and vice versa.
Claim 3
Dependent Claim
31 words
A machine tool as defined in claim 1, wherein said displacing means includes a reciprocating power drive mounted on said base part and including means for disconnectably engaging an exchangeable part.
Claim 4
Dependent Claim
24 words
A machine tool as defined in claim 1, wherein said engaging and displacing means are arranged in said base part of the table unit.
Claim 5
Dependent Claim
29 words
A machine tool as defined in claim 1, wherein said clamping upper surfaces of said base part and of said exchangeable part are provided respectively with aligned T-shaped grooves.
Claim 6
Dependent Claim
32 words
A machine tool as defined in claim 1, further including means for arresting said exchangeable part in a normal working position on said table unit in the range of said processing tool.
Claim 7
Dependent Claim
28 words
A machine as defined in claim 1, said pallet changer having a rotary table with means for exchangeably supporting pallets in the form of said exchangeable table part.
Claim 8
Dependent Claim
49 words
A machine tool as defined in claim 6, wherein said displacing means includes a power driven element provided with a catch member and said exchangeable table part being provided with annular grooves for engaging or disengaging said catch member during rotation of said rotary table of said pallet changer.
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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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |