US3296059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible hollow core
Assignee: Individual
•
Filing: 1963-03-18
•
Granted: 1967-01-03
•
Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Benjamin W Schwindt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:51
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/24; Y10T428/24025; Y10T428/24149; Y10T428/2419; Y10T428/24215; Y10T428/24231; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24752; Y10T428/24769
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN COMBINATION, A FRAME HAVING A PRESELECTED WIDTH AND A HOLLOW LADER-TYPE CORE DISPOSED IN SAID FRAME, SAID CORE COMPRISING A PLURALITY OF STRIPS OF CORRUGATED PAPER BOARD PRESELECTED ONES OF WHICH HAVE A WIDTH SUBSTANTIALLY EQUAL TO SAID PRESELECTED WIDTH, AND HINGE-LIKE HOLDING MEANS AT THE ENDS OF THE STRIPS FOR HOLDING EACH STRIP TO AN ADJACENT STRIP TO FORM A SINGLE CELL WHICH EXTENDS BETWEEN THE BOUNDARIES OF SAID FRAME, SAID HINGE-LIKE HOLDING MEANS COMPRISING CONNECTING PIECES CONNECTED BETWEEN ADJACENT ONES OF STRIPS OF CORRUGATED PAPER BOARD AND BEING FOLDABLE ALONG SAID CONNECTIONS, EACH OF SAID CONNECTING PIECES HAVING A FOLD LINE INTERMEIDIATE SAID CONNECTIONS WHEREBY EACH CONNECTING PIECES IS FOLDABLE ALONG ITS LINES OF CONNECTION TO ADJACENT ONES OF SAID STRIP AND ALONG SAID INTERMEDIATE FOLD LINE, SAID CONNECTING PIECES BEING FORMED OF A METERIAL THAT IS THE SAME AS THE CORRUGATED PAPER BOARD.
Claim 2
Dependent Claim
147 words
IN COMBINATION, A FRAME HAVING A PRESELECTED WIDTH AND A HOLLOW LADER-TYPE CORE DISPOSED IN SAID FRAME, SAID CORE COMPRISING A PLURALITY OF STRIPS OF CORRUGATED PAPER BOARD PRESELECTED ONES OF WHICH HAVE A WIDTH SUBSTANTIALLY EQUAL TO SAID PRESELECTED WIDTH, AND HINGE-LIKE HOLDING MEANS AT THE ENDS OF THE STRIPS FOR HOLDING EACH STRIP TO AN ADJACENT STRIP TO FORM A SINGLE CELL WHICH EXTENDS BETWEEN THE BOUNDARIES OF SAID FRAME, SAID HINGE-LIKE HOLDING MEANS COMPRISING CONNECTING PIECES CONNECTED BETWEEN ADJACENT ONES OF STRIPS OF CORRUGATED PAPER BOARD AND BEING FOLDABLE ALONG SAID CONNECTIONS, EACH OF SAID CONNECTING PIECES HAVING A FOLD LINE INTERMEIDIATE SAID CONNECTIONS WHEREBY EACH CONNECTING PIECES IS FOLDABLE ALONG ITS LINES OF CONNECTION TO ADJACENT ONES OF SAID STRIP AND ALONG SAID INTERMEDIATE FOLD LINE, SAID CONNECTING PIECES BEING FORMED OF A METERIAL THAT IS THE SAME AS THE CORRUGATED PAPER BOARD.
References Cited (Backward Citations)
CA649968A
Cited
US1394119A
Cited
US1791422A
Cited
US2046985A
Cited
US2328454A
Cited
GB610451A
Cited
US2511620A
Cited
US2893076A
Cited
US3070198A
Cited
US3082142A
Cited
US3109766A
Cited
US3101652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |