Patent US3351370A successfully refreshed from Google Patents.
US3351370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum barrel handlers
Assignee: Hyster Co
•
Filing: 1965-07-19
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Granted: 1967-11-07
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Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 John E Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A VACUUM HEAD FOR PICKING UP THROUGH SEALING CONTACT AN ARTICLE HAVING A PROJECTING, NON-SEALABLE OUTER RIM COMPRISING: A RIGID BACK-UP MEMBER WITH A PERIPHERY BEYOND THE LIMITS OF THE ARTICLE TO BE PRICKED UP, AND HOLE WITHIN SAID LIMITS, AN IMPERVIOUS, FLEXIBLE MEMBRANE SEALINGLY FASTENED TO SAID MEMBER ADJACENT SAID PERIPHERY AND ADJACENT SAID HOLE, A PREVIOUS PAD SUBSTANCE BETWEEN SAID BACK-UP MEMBER AND SAID MEMBRANE, MEANS CREATING A PREDETERMINED PRESSURE ON THE FACE OF SAID MEMBRANE ADJACENT SAID PAD SUBSTANCE, AND MEANS TO CREATE A PRESSURE BETWEEN SAID MEMBRANE AND SAID ARTICLE SUBSTANTIALLY LOWER THAN SAID PREDETERMINED PRESSURE TO CAUSE SAID PREDETERMINED PRESSURE TO FORCE SAID MEMBRANE INTO TIGHT SEALING CONTACT WITH SAID ARTICLE INSIDE THE SAID OUTER RIM.
Claim 2
Dependent Claim
121 words
A VACUUM HEAD FOR PICKING UP THROUGH SEALING CONTACT AN ARTICLE HAVING A PROJECTING, NON-SEALABLE OUTER RIM COMPRISING: A RIGID BACK-UP MEMBER WITH A PERIPHERY BEYOND THE LIMITS OF THE ARTICLE TO BE PRICKED UP, AND HOLE WITHIN SAID LIMITS, AN IMPERVIOUS, FLEXIBLE MEMBRANE SEALINGLY FASTENED TO SAID MEMBER ADJACENT SAID PERIPHERY AND ADJACENT SAID HOLE, A PREVIOUS PAD SUBSTANCE BETWEEN SAID BACK-UP MEMBER AND SAID MEMBRANE, MEANS CREATING A PREDETERMINED PRESSURE ON THE FACE OF SAID MEMBRANE ADJACENT SAID PAD SUBSTANCE, AND MEANS TO CREATE A PRESSURE BETWEEN SAID MEMBRANE AND SAID ARTICLE SUBSTANTIALLY LOWER THAN SAID PREDETERMINED PRESSURE TO CAUSE SAID PREDETERMINED PRESSURE TO FORCE SAID MEMBRANE INTO TIGHT SEALING CONTACT WITH SAID ARTICLE INSIDE THE SAID OUTER RIM.
References Cited (Backward Citations)
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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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |