US3442247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible double wand
Assignee: Individual
•
Filing: 1966-06-24
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Granted: 1969-05-06
•
Expires: 1986-06-24
Abstract
No abstract record available.
Inventors
- 👤 Carl T Osterberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:03
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/658; E01F9/623; E01F9/646; E01F9/688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A SAFETY DEVICE CONSISTING OF A CYLINDRICAL ROLL OF A FIRST SHEET MATERIAL COMPRISING A MULTIPLICITY OF TURNS OF SAID SHEET MATERIAL, SAID CYLINDER BEING PROVIDED WITH A LATERAL CUT SUBSTANTIALLY AT RIGHT ANGLES TO THE AXIS OF SAID ROLL AND EXTENDING FROM ONE SIDE OF THE CYLINDER TO A POINT CLOSE TO THE OTHER SIDE OF THE CYLINDER TO LEAVE EACH PLY OF SAID SINGLE SHEET WITH AN UNCUT PORTION, SAID CYLINDER BEING ADAPTED TO BE BENT DOUBLE ABOUT SAID UNCUT PORTION AS A HINGE TO FORM ADJACENT CYLINDERS SIDE BY SIDE AND HINGED TO EACH OTHER AT THE UNCUT PORTION, AND BEING FURTHER ADAPTED TO BE GRASPED AT THE HINGE AND PULLED AXIALLY TO EXTEND THE SUCCESSIVE LAYERS OF SAID CYLINDER IN A DOUBLE HELICAL PATTERN HAVING EACH TURN OF THE HELIX EXTENDING FROM ONE CYLINDER JOINED TO THE CORRESPONDING TURN OF THE HELIX EXTENDING FROM THE OTHER CYLINDER BY THE UNCUT PORTION OF THE SHEET WHEREBY TO FORM AN EXTENSIBLE AND COLLAPSIBLE WAND.
Claim 2
Dependent Claim
166 words
A SAFETY DEVICE CONSISTING OF A CYLINDRICAL ROLL OF A FIRST SHEET MATERIAL COMPRISING A MULTIPLICITY OF TURNS OF SAID SHEET MATERIAL, SAID CYLINDER BEING PROVIDED WITH A LATERAL CUT SUBSTANTIALLY AT RIGHT ANGLES TO THE AXIS OF SAID ROLL AND EXTENDING FROM ONE SIDE OF THE CYLINDER TO A POINT CLOSE TO THE OTHER SIDE OF THE CYLINDER TO LEAVE EACH PLY OF SAID SINGLE SHEET WITH AN UNCUT PORTION, SAID CYLINDER BEING ADAPTED TO BE BENT DOUBLE ABOUT SAID UNCUT PORTION AS A HINGE TO FORM ADJACENT CYLINDERS SIDE BY SIDE AND HINGED TO EACH OTHER AT THE UNCUT PORTION, AND BEING FURTHER ADAPTED TO BE GRASPED AT THE HINGE AND PULLED AXIALLY TO EXTEND THE SUCCESSIVE LAYERS OF SAID CYLINDER IN A DOUBLE HELICAL PATTERN HAVING EACH TURN OF THE HELIX EXTENDING FROM ONE CYLINDER JOINED TO THE CORRESPONDING TURN OF THE HELIX EXTENDING FROM THE OTHER CYLINDER BY THE UNCUT PORTION OF THE SHEET WHEREBY TO FORM AN EXTENSIBLE AND COLLAPSIBLE WAND.
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |