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US3720960A Expired / Lapsed US ⏱️ 0.0 years remaining

Spring attachment clip

Assignee: Individual
•
Filing: 1971-05-21
•
Granted: 1973-03-20
•
Expires: 1991-05-21
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Abstract

Abstract A DEVICE WHICH PROVIDES AN INEXPENSIVE AND RAPID MEANS FOR SUSPENDING SPRINGS WITHIN A FRAMEWORK. THE DEVICE, IN ITS SIMPLEST FORM, COMPRISES A FLAT STRIP OF SHEET METAL HAVING ONE END BENT UPWARDLY IN AN ARCED CONFIGURATION. AT THE END OPPOSITE THERETO A PORTION OF THE STRIP IS BENT DOWNWARDLY AT AN ANGLE OF 90* TO FORM A FLANGE AND THE END DEPENDENT THEREFROM IS BENT AT AN ANGLE OF 90* SUCH THAT THE LATTER PORTION IS ESSENTIALLY PARALLEL TO THE MAIN BODY OF THE STRIP. IF DESIRED, THE END PORTION MAY BE POINTED OR NOTCHED TO PROVIDE TWO OR MORE POINTED ENDS. IN OPERATION, THE POINTED END IS HAMMERED INTO THE OUTSIDE OF THE FRAME WITH THE MAIN PART OF THE STRIP RESTING ON THE FRAME. THUSLY, THE ARCED END POINTS TOWARD THE INTERIOR OF THE FRAME AND THE SPRING TO BE SUSPENDED WITHIN THE FRAME IS HOOKED WITHIN THE ARCED PORTION. THE CLIP PROVIDES VERTICAL SUPPORT OF A CANTILEVER TYPE DUE TO THE MAIN PART OF THE STRIP RESTING ON THE FRAME AND LATERAL SUPPORT DUE TO THE POINTED ENDS BEING ANCHORED TO THE FRAME. THE LONGITUDINAL FORCE EXERTED BY THE SPRING IS COUNTERED BY THE FIRST 90* BEND ACTING AS A FLANGE AGAINST THE FRAME ITSELF. D R A W I N G

Inventors

  • 👤 J Bond

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 02:38
CPC Classifications
A; A47; A47C; A47C31/00; A47C31/02; A47C31/04; A47C31/06

Claims Analysis

Total Claims: 0
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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) 1976-03-19 1976-09-18 1977-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-03-19 1980-09-18 1981-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-03-19 1984-09-18 1985-03-20 $7700.00 Window Closed / Lapsed

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