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US3991981A Expired / Lapsed US ⏱️ 0.0 years remaining

Balustrade with adjustable supporting balusters

Assignee: Individual
•
Filing: 1975-08-11
•
Granted: 1976-11-16
•
Expires: 1995-08-11
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Abstract

Abstract A balustrade comprising an elongated hand rail having longitudinal guide grooves formed along the two lateral sides thereof, a plurality of resilient connectors slidably engaged in said grooves, and a plurality of supporting balusters connected to the hand rail through said connectors. A tapered recess having a threaded peripheral wall is provided at the bottom of each connector for receiving a threaded end of the baluster. The connector can be slidably adjusted to any desirable position along the grooves before the baluster is connected thereto, and when the baluster is screwed into the tapered portion of the recess by some external force, the resilient connector is forced to expand with part or all of its surface abutting against the inner surface of the hand rail whereby to keep the baluster in position. The other ends of the balusters are then fixed to the ground to complete the balustrade.

Inventors

  • 👤 Sin An Wu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:15
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1836

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 210 words
A balustrade comprising: an elongated hand rail having longitudinal guide grooves formed therein; a plurality of connectors made up of resilient material and slidably engaged in said grooves; and a plurality of supporting balusters detachably connected to the hand rail through said connectors, characterized in that a plurality of arms are provided on the resilient connectors and protrude laterally therefrom toward the inner surface of the hand rail, a slit is provided on the surface of the connector to increase the resilience thereof, and a recess having a threaded taper wall is provided at the bottom of each connector for receiving the threaded end of the baluster so that when the baluster is loosely screwed in the recess of the connector the latter is slidable in the guide grooves to any desirable position, and when the baluster is loosely screwed in the recess of the connector the latter is slidable in the guide grooves to any desirable position, and when the baluster is further screwed into the tapered recess by some external force the connector is forced to expand toward the inner surface of the hand rail with said laterally protruded arms thereof abutting tightly against the inner surface of the hand rail whereby to fix the baluster in position.
Claim 2
Dependent Claim 210 words
A balustrade comprising: an elongated hand rail having longitudinal guide grooves formed therein; a plurality of connectors made up of resilient material and slidably engaged in said grooves; and a plurality of supporting balusters detachably connected to the hand rail through said connectors, characterized in that a plurality of arms are provided on the resilient connectors and protrude laterally therefrom toward the inner surface of the hand rail, a slit is provided on the surface of the connector to increase the resilience thereof, and a recess having a threaded taper wall is provided at the bottom of each connector for receiving the threaded end of the baluster so that when the baluster is loosely screwed in the recess of the connector the latter is slidable in the guide grooves to any desirable position, and when the baluster is loosely screwed in the recess of the connector the latter is slidable in the guide grooves to any desirable position, and when the baluster is further screwed into the tapered recess by some external force the connector is forced to expand toward the inner surface of the hand rail with said laterally protruded arms thereof abutting tightly against the inner surface of the hand rail whereby to fix the baluster in position.

References Cited (Backward Citations)

US2869829A Cited
US2820613A Cited
US3689032A Cited
US3704004A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-11-16 1980-05-17 1980-11-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-11-16 1984-05-17 1984-11-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-11-16 1988-05-17 1988-11-16 $7700.00 Window Closed / Lapsed

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