US2709389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic screw anchor
Assignee: H J Van Der Riju N V
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Filing: 1950-11-03
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Granted: 1955-05-31
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Cornelis Johannes Gerardus Kle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:55
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A WALL PLUG FOR INSERTION IN A WALL HOLE TO PROVIDE A FIRM SEATING FOR A SCREW THREADED THEREIN; SAID PLUG BEING OF SOLID SYNTHETIC RESINOUS THERMOPLASTIC MATERIAL AND COMPRISING A LONGITUDINALLY SLIT TUBULAR BODY OF UNIFORM CROSS SECTION THROUGHOUT ITS LENGTH WITH A SMOOTH UNIFORM CENTRAL BORE OF CIRCULAR CROSS SECTION EXTENDING COMPLETELY THERETHROUGH, SAID SLIT TRAVERSING THE WALL OF THE PLUG AT A SUBSTANTIAL ANGLE TO THE RADIUS THEREOF AND EXTENDING THE WHOLE LENGTH OF BODY SO THAT THE LONGITUDINAL EDGES OF THE BODY AT SAID SLIT CAN BE SPREAD APART AND OVERLAPPED TO ACCOMMODATE THE PLUG TO WALL HOLES OF DIFFERENT DIAMETERS.
Claim 2
Dependent Claim
105 words
A WALL PLUG FOR INSERTION IN A WALL HOLE TO PROVIDE A FIRM SEATING FOR A SCREW THREADED THEREIN; SAID PLUG BEING OF SOLID SYNTHETIC RESINOUS THERMOPLASTIC MATERIAL AND COMPRISING A LONGITUDINALLY SLIT TUBULAR BODY OF UNIFORM CROSS SECTION THROUGHOUT ITS LENGTH WITH A SMOOTH UNIFORM CENTRAL BORE OF CIRCULAR CROSS SECTION EXTENDING COMPLETELY THERETHROUGH, SAID SLIT TRAVERSING THE WALL OF THE PLUG AT A SUBSTANTIAL ANGLE TO THE RADIUS THEREOF AND EXTENDING THE WHOLE LENGTH OF BODY SO THAT THE LONGITUDINAL EDGES OF THE BODY AT SAID SLIT CAN BE SPREAD APART AND OVERLAPPED TO ACCOMMODATE THE PLUG TO WALL HOLES OF DIFFERENT DIAMETERS.
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) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |