US3274744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for handrailing
Assignee: Blumcraft of Pittsburgh LP
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Filing: 1963-12-13
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Granted: 1966-09-27
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Blum Louis
- 👤 Jr William J Horgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:55
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN APPARATUS FOR SECURING THE POSTS OF HANDRAILINGS TO MASONRY STAIR TREADS, THE COMBINATION COMPRISING A TUBULAR SLEEVE ADAPTED FOR BEING EMBEDDED IN AND THEREBY ANCHORED TO A MASONRY STAIR TREAD, AND A WEDGE ASSEMBLY INCLUDING INNER AND OUTER COACTING WEDGES NONTURNABLY FITTED INTO AND SELECTIVELY POSITONED LONGITUDINALLY OF SAID SLEEVE AND PROVIDED WITH ABUTTING SURFACES INCLINED RELATIVE TO THE AXIS OF SAID SLEEVE, THE OUTER ONE OF SAID WEDGES BEING PROVIDED WITH A HEAD EXTENDING ACROSS THE OUTER END OF SAID SLEEVE AND ADAPTED FOR BEING INTERPOSED BETWEEN SAID SLEEVE AND THE BASE OF THE POST, A SCREW EXTENDING THROUGH SAID WEDGES AND DRAWING SAID WEDGES TOGETHER FOR BEING WEDGED TIGHTLY IN SAID SLEEVE IN THE SELECTED POSITION THEREOF, AND SCREWS THREADED INTO SAID HEAD AND ADAPTED FOR EXTENDING THROUGH THE BASE OF SAID POST AND HOLDING THE SAME TO SAID HEAD IN OVERLYING RELATION TO THE OUTER END OF THE FIRST MENTIONED SCREW.
Claim 2
Dependent Claim
155 words
IN APPARATUS FOR SECURING THE POSTS OF HANDRAILINGS TO MASONRY STAIR TREADS, THE COMBINATION COMPRISING A TUBULAR SLEEVE ADAPTED FOR BEING EMBEDDED IN AND THEREBY ANCHORED TO A MASONRY STAIR TREAD, AND A WEDGE ASSEMBLY INCLUDING INNER AND OUTER COACTING WEDGES NONTURNABLY FITTED INTO AND SELECTIVELY POSITONED LONGITUDINALLY OF SAID SLEEVE AND PROVIDED WITH ABUTTING SURFACES INCLINED RELATIVE TO THE AXIS OF SAID SLEEVE, THE OUTER ONE OF SAID WEDGES BEING PROVIDED WITH A HEAD EXTENDING ACROSS THE OUTER END OF SAID SLEEVE AND ADAPTED FOR BEING INTERPOSED BETWEEN SAID SLEEVE AND THE BASE OF THE POST, A SCREW EXTENDING THROUGH SAID WEDGES AND DRAWING SAID WEDGES TOGETHER FOR BEING WEDGED TIGHTLY IN SAID SLEEVE IN THE SELECTED POSITION THEREOF, AND SCREWS THREADED INTO SAID HEAD AND ADAPTED FOR EXTENDING THROUGH THE BASE OF SAID POST AND HOLDING THE SAME TO SAID HEAD IN OVERLYING RELATION TO THE OUTER END OF THE FIRST MENTIONED SCREW.
References Cited (Backward Citations)
US1552569A
Cited
US2051251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |