US3592102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable indexing plate for a machine tool
Assignee: Individual
•
Filing: 1969-01-24
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Granted: 1971-07-13
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Expires: 1989-01-24
Abstract
Abstract An indexing plate for a machine tool rotatable about a vertical axis on a support resting in a foundation including horizontal support surface means positioned in the foundation, vertical jack means are mounted between said support surface means and the periphery of said plate and said jack means are capable of simultaneously contacting said support surface means and said plate to support said plate. In one embodiment four jacks are provided in the plate whose axes pass through the plane of the plate at the corners of a square centered on the axis of rotation of the plate and the support surface means includes four support shoes mounted in pairs on rails.
Inventors
- 👤 Charles William Berthiez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:26
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/262; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30868; Y10T409/308792; Y10T409/309576; Y10T74/00; Y10T74/14; Y10T74/1476
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
A workpiece support for a machine tool comprising, a plurality of horizontal support surface means, a support member located adjacent said support surface means, an indexing plate, means mounting said indexing plate on said support member for indexible rotation about a vertical axis, a plurality of vertically adjustable jack means, a plurality of supporting locations around the periphery of said plate, means for adjusting each of said jack means to an individually discrete predetermined extension to extend between a corresponding one of said support surface means and a different one of said plate-supporting locations to support said plate while in a first indexable position, means for retracting said jack means to permit said plate to be rotatably indexed, and means for reextending each of said jack means to its corresponding predetermined extension for supporting the plate at its supporting locations from said support surface means while said plate is in a second indexable position.
Claim 2
Dependent Claim
154 words
A workpiece support for a machine tool comprising, a plurality of horizontal support surface means, a support member located adjacent said support surface means, an indexing plate, means mounting said indexing plate on said support member for indexible rotation about a vertical axis, a plurality of vertically adjustable jack means, a plurality of supporting locations around the periphery of said plate, means for adjusting each of said jack means to an individually discrete predetermined extension to extend between a corresponding one of said support surface means and a different one of said plate-supporting locations to support said plate while in a first indexable position, means for retracting said jack means to permit said plate to be rotatably indexed, and means for reextending each of said jack means to its corresponding predetermined extension for supporting the plate at its supporting locations from said support surface means while said plate is in a second indexable position.
Claim 3
Dependent Claim
53 words
A workpiece support as recited in claim 1 wherein said jack means are mounted in said plate and include vertically movable feet which are capable of contacting said support surface means and stop means formed between said plate and said jack means to limit the travel of said jack to said predetermined extension.
Claim 4
Dependent Claim
29 words
A workpiece support as recited in claim 1 wherein said jack means are used in pairs and have their axis symmetric with respect to the axis of said plate.
Claim 5
Dependent Claim
36 words
A workpiece support as recited in claim 1 wherein said jack means are positioned at equal angles about a circle coaxial with said plate, said support surface means being on a plane parallel to said plate.
Claim 6
Dependent Claim
33 words
A workpiece support as recited in claim 1 wherein said plate and said support member are movable on a bed and said support surface means are mounted on rails parallel to said bed.
Claim 7
Dependent Claim
35 words
A workpiece support as recited in claim 5 wherein said support surface means are provided by support shoes movable on rails, said support shoes being provided with means to lock said shoes to said rails.
Claim 8
Dependent Claim
56 words
A workpiece support as recited in claim 5 wherein four jack means provided in the plate whose axes pass through the plane of the plate at the corners of a square centered on the axis of rotation of said plate, said support surface means being provided by four support shoes mounted in pairs on said raiLs.
Claim 9
Dependent Claim
29 words
A workpiece support for a machine tool as recited in claim 6 wherein said support shoes include positioning means for determining the spacing between shoes on a given rail.
References Cited (Backward Citations)
GB185004A
Cited
US2666367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |