US3215071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic work holding apparatus
Assignee: Individual
•
Filing: 1963-05-02
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Granted: 1965-11-02
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Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 Stillwell Brian Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:38
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/14; B41F15/16; B41F15/18; B41F15/20; B65; B65H; B65H5/00; B65H5/22; B65H5/222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
AN APPARATUS FOR TRANSFERRING WORKPIECES THROUGH A SERIES OF SUCCESSIVE SPACED POSITIONS, SAID APPARATUS COMPRISING A BED PRESENTING SUPPORTING SURFACES TO THE WORKPIECES, SAID BED HAVING AT LEAST ONE FIXED PART AND AT LEAST TWO MOVABLE PARTS, A NUMBER OF APERTURES IN THE SUPPORTING SURFACES OF THE BED PARTS CONNECTED THROUGH DUCTS TO A SOURCE OF SUCTION, MEANS FOR CLOSING ALL THE APERTURES NOT COVERED BY A WORKPIECE DISPOSED ON THE BED WHILE LEAVING OPEN THOSE COVERED BY THE WORKPIECES DURING ANY STAGE OF THE TRANSFER OPERATION, MEANS FOR MOVING EACH OF THE MOVABLE BED PARTS BETWEEN SUCCESSIVE POSITIONS, AND CONTROL MEANS OPERABLE TO APPLY THE SUCTION TO THE APERTURES IN A PREDETERMINED SEQUENCE TO PERMIT THE WORKPIECES TO BE HELD IN CONTACT WITH A SUPPORTING SURFACE AT LEAST ONE OF THE BED PARTS DURING MOVEMENT OF THE MOVABLE BED PART.
Claim 2
Independent Claim
141 words
AN APPARATUS FOR TRANSFERRING WORKPIECES THROUGH A SERIES OF SUCCESSIVE SPACED POSITIONS, SAID APPARATUS COMPRISING A BED PRESENTING SUPPORTING SURFACES TO THE WORKPIECES, SAID BED HAVING AT LEAST ONE FIXED PART AND AT LEAST TWO MOVABLE PARTS, A NUMBER OF APERTURES IN THE SUPPORTING SURFACES OF THE BED PARTS CONNECTED THROUGH DUCTS TO A SOURCE OF SUCTION, MEANS FOR CLOSING ALL THE APERTURES NOT COVERED BY A WORKPIECE DISPOSED ON THE BED WHILE LEAVING OPEN THOSE COVERED BY THE WORKPIECES DURING ANY STAGE OF THE TRANSFER OPERATION, MEANS FOR MOVING EACH OF THE MOVABLE BED PARTS BETWEEN SUCCESSIVE POSITIONS, AND CONTROL MEANS OPERABLE TO APPLY THE SUCTION TO THE APERTURES IN A PREDETERMINED SEQUENCE TO PERMIT THE WORKPIECES TO BE HELD IN CONTACT WITH A SUPPORTING SURFACE AT LEAST ONE OF THE BED PARTS DURING MOVEMENT OF THE MOVABLE BED PART.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |