US3376764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic positioning table
Assignee: Individual
•
Filing: 1965-08-19
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Granted: 1968-04-09
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Expires: 1985-08-19
Abstract
No abstract record available.
Inventors
- 👤 Schardt Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:19
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/60; B23Q1/62; B23Q1/621; B23Q1/26; B23Q1/38; B23Q11/00; B23Q11/08; B23Q11/0875; B23Q35/00; B23Q35/02; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5617
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
APPARATUS FOR POSITIONING A WORK PIECE, COMPRISING (A) BASE MEANS HAVING AN UPPER PLANAR BEARING SURFACE, (B) A WORK-SUPPORTING TABLE HAVING A LOWER PLANAR SURFACE DISPOSED FOR MOVEMENT OVER SAID BEARING SURFACE, (C) A SOURCE OF GAS PRESSURE COUPLED TO SAID BASE MEANS TO PROVIDE A PNEUMATIC BEARING BETWEEN SAID SURFACES, (D) A VACUUM SOURCE COUPLED TO SAID BASE MEANS ARRANGED TO SUBSTITUTE A VACUUM FOR SAID GAS PRESSURE WHEREBY TO LOCK THE WORK TABLE TO SAID BEARING SURFACE SOLELY BY THE FORCE OF SAID VACUUM, (E) INDEXING MEANS OPERABLY DISPOSED BETWEEN THE WORK TABLE AND THE BASE MEANS FOR INDEXING THE WORK TABLE ON SAID BEARING SURFACE WITH RESPECT TO A CUTTING TOOL, AND (F) PANTOGRAPH MEANS OPERABLY CONNECTING SAID WORK TABLE TO THE BASE MEANS TO CONTINUOUSLY MAINTAIN A TRUE RELATION BETWEEN THE X-Y AXES OF THE WORK TABLE AND SAID BEARING SURFACE THROUGHOUT THE INDEXING MOVEMENTS OF THE WORK TABLE.
Claim 2
Dependent Claim
153 words
APPARATUS FOR POSITIONING A WORK PIECE, COMPRISING (A) BASE MEANS HAVING AN UPPER PLANAR BEARING SURFACE, (B) A WORK-SUPPORTING TABLE HAVING A LOWER PLANAR SURFACE DISPOSED FOR MOVEMENT OVER SAID BEARING SURFACE, (C) A SOURCE OF GAS PRESSURE COUPLED TO SAID BASE MEANS TO PROVIDE A PNEUMATIC BEARING BETWEEN SAID SURFACES, (D) A VACUUM SOURCE COUPLED TO SAID BASE MEANS ARRANGED TO SUBSTITUTE A VACUUM FOR SAID GAS PRESSURE WHEREBY TO LOCK THE WORK TABLE TO SAID BEARING SURFACE SOLELY BY THE FORCE OF SAID VACUUM, (E) INDEXING MEANS OPERABLY DISPOSED BETWEEN THE WORK TABLE AND THE BASE MEANS FOR INDEXING THE WORK TABLE ON SAID BEARING SURFACE WITH RESPECT TO A CUTTING TOOL, AND (F) PANTOGRAPH MEANS OPERABLY CONNECTING SAID WORK TABLE TO THE BASE MEANS TO CONTINUOUSLY MAINTAIN A TRUE RELATION BETWEEN THE X-Y AXES OF THE WORK TABLE AND SAID BEARING SURFACE THROUGHOUT THE INDEXING MOVEMENTS OF THE WORK TABLE.
References Cited (Backward Citations)
US3209623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |