US3867997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guard rail support for scaffold
Assignee: Individual
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Filing: 1973-12-26
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Granted: 1975-02-25
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Expires: 1993-12-26
Abstract
Abstract A guard rail support for scaffolds comprises an upright post having a bracket at one end thereof pivotably mounting an elongated crossbar. The crossbar includes a second bracket. The two brackets include rigid protruding lips that face one another and serve to engage a scaffolding platform in an operative position along upwardly facing surfaces adjacent opposed side walls. The crossbar, when the lips are thus engaged, extends across the platform against a downwardly facing surface thereof. The post and crossbar may be selectively locked in this position to secure the support to the platform. The support also includes fixed and movable brackets for receiving and securing guard rails thereon.
Inventors
- 👤 Jr Thomas Hyslop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:01
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/32; E04G21/3204; E04G21/3223; E04G21/3233; E04G5/00; E04G5/14; E04G7/00; E04G7/02; E04G7/28; E04G2007/285
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
A removable guard rail support for an elongated scaffolding platform having horizontal first and second upwardly facing surface areas adjacent transversely opposed sides and a downwardly facing area spaced elevationally below said first and second upwardly facing surfaces, said guard rail support comprising: an upright post; first bracket means fixed to one end of the post for engaging said platform along a portion of the first upwardly facing surface area; a crossbar having one end thereof mounted to the first bracket means for pivotal movement about a pivot axis to an operative position wherein said crossbar engages the downwardly facing surface; second bracket means provided at the remaining end of the crossbar for engaging said platform along a portion of the second upwardly facing surface area with said crossbar in said operative position; locking means interconnecting the first bracket and the crossbar for selectively locking the crossbar in the operative position against relative angular movement about the pivot axis; and guard rail mounting means on said upright post for releasably receiving and supporting a horizontal guard rail.
Claim 2
Dependent Claim
177 words
A removable guard rail support for an elongated scaffolding platform having horizontal first and second upwardly facing surface areas adjacent transversely opposed sides and a downwardly facing area spaced elevationally below said first and second upwardly facing surfaces, said guard rail support comprising: an upright post; first bracket means fixed to one end of the post for engaging said platform along a portion of the first upwardly facing surface area; a crossbar having one end thereof mounted to the first bracket means for pivotal movement about a pivot axis to an operative position wherein said crossbar engages the downwardly facing surface; second bracket means provided at the remaining end of the crossbar for engaging said platform along a portion of the second upwardly facing surface area with said crossbar in said operative position; locking means interconnecting the first bracket and the crossbar for selectively locking the crossbar in the operative position against relative angular movement about the pivot axis; and guard rail mounting means on said upright post for releasably receiving and supporting a horizontal guard rail.
Claim 3
Dependent Claim
96 words
The invention set out in claim 1 wherein said first bracket means includes a horizontal protruding lip fixed to the upright post and elevationally spaced from the crossbar when in said operative position, by a distance substantially equal to the distance between the first upwardly facing surface area and the downwardly facing surface area; and wherein said second bracket means includes a horizontal protruding lip fixed to said second bracket means and spaced from the crossbar a distance substantially equal to the distance between the second upwardly facing surface area and the downwardly facing surface area.
Claim 4
Dependent Claim
27 words
The invention set out in claim 2 further comprising adjusting means for enabling the second bracket means to be selectively positioned along the length of the crossbar.
Claim 5
Dependent Claim
62 words
The invention set out in claim 1 wherein the locking means comprises: complementary apertures formed through said first bracket means and said crossbar at equal radial distances from the pivot axis, said complementary apertures being positioned so that they align with one another in the operative position of the crossbar; and a rigid locking member slidably receivable through the aligned complementary apertures.
Claim 6
Dependent Claim
79 words
The invention set out in claim 1 wherein the guard rail mounting means comprises: a guard rail support bracket slidably receiving a guard rail, said first support bracket being mounted to the upright post for movement along the post; fastening means connected to the post for urging the guard rail against the first guard rail support bracket; and a guard rail support channel mounted to the other end of the upright post for receiving a second guard rail therethrough.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |