US3131445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper clip
Assignee: Individual
•
Filing: 1962-07-02
•
Granted: 1964-05-05
•
Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Lorber Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:49
CPC Classifications
B; B42; B42F; B42F1/00; B42F1/02; B42F1/10; Y; Y10; Y10T; Y10T24/00; Y10T24/20; Y10T24/202; Y10T24/205; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44906; Y10T24/44915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A PAPER CLIP OF RESILIENT MATERIAL COMPRISING, IN COMBINATION, THREE LEG PORTIONS ARRANGED TRANSVERSELY SPACED FROM EACH OTHER; TRANSVERSE CONNECTING PORTIONS INTEGRALLY CONNECTING SAID LEG PORTIONS AT ENDS THEREOF TO EACH OTHER, SAID PORTIONS EXTENDING IN UNSTRESSED CONDITION OF SAID CLIP SUBSTANTIALLY IN ONE PLANE AND SAID CONNECTING PORTIONS CONNECTING SAID LEG PORTIONS TO EACH OTHER SO THAT AT LEAST ONE OF SAID LEG PORTIONS CAN BE TWISTED ABOUT THE CONNECTING PORTION CONNECTING SAID ONE LEG PORTION TO AN ADJACENT LEG PORTION OUT OF SAID PLANE; AND AT LEAST ONE LEAF-LIKE WEDGE-SHAPED PROJECTION FORMED ON ONE OF SAID LEG PORTIONS, HAVING A THICKNESS SMALLER THAN THE LEG PORTION ON WHICH IT IS FORMED AND PROJECTING FROM THE LEG PORTION ON WHICH IS FORMED TOWARD A LEG PORTION ADJACENT THERETO, WHEREBY, WHEN PAPERS ARE CLAMPED TOGETHER BY SAID PAPER CLIP, SAID LEAF-LIKE PROJECTION WILL BE TURNED OUT OF SAID PLANE AND APPLY A TORSIONAL MOMENT TO THE LEG PORTION TO WHICH IT IS CONNECTED CREATING THEREBY TORSIONAL FORCES INCREASING THE CLAMPING PRESSURE OF SAID CLIP.
Claim 2
Dependent Claim
174 words
A PAPER CLIP OF RESILIENT MATERIAL COMPRISING, IN COMBINATION, THREE LEG PORTIONS ARRANGED TRANSVERSELY SPACED FROM EACH OTHER; TRANSVERSE CONNECTING PORTIONS INTEGRALLY CONNECTING SAID LEG PORTIONS AT ENDS THEREOF TO EACH OTHER, SAID PORTIONS EXTENDING IN UNSTRESSED CONDITION OF SAID CLIP SUBSTANTIALLY IN ONE PLANE AND SAID CONNECTING PORTIONS CONNECTING SAID LEG PORTIONS TO EACH OTHER SO THAT AT LEAST ONE OF SAID LEG PORTIONS CAN BE TWISTED ABOUT THE CONNECTING PORTION CONNECTING SAID ONE LEG PORTION TO AN ADJACENT LEG PORTION OUT OF SAID PLANE; AND AT LEAST ONE LEAF-LIKE WEDGE-SHAPED PROJECTION FORMED ON ONE OF SAID LEG PORTIONS, HAVING A THICKNESS SMALLER THAN THE LEG PORTION ON WHICH IT IS FORMED AND PROJECTING FROM THE LEG PORTION ON WHICH IS FORMED TOWARD A LEG PORTION ADJACENT THERETO, WHEREBY, WHEN PAPERS ARE CLAMPED TOGETHER BY SAID PAPER CLIP, SAID LEAF-LIKE PROJECTION WILL BE TURNED OUT OF SAID PLANE AND APPLY A TORSIONAL MOMENT TO THE LEG PORTION TO WHICH IT IS CONNECTED CREATING THEREBY TORSIONAL FORCES INCREASING THE CLAMPING PRESSURE OF SAID CLIP.
References Cited (Backward Citations)
DE134017C
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US513772A
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US623987A
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US764719A
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GB834472A
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FR1175385A
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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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |