US3881698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety handrail support
Assignee: Individual
•
Filing: 1974-06-21
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Granted: 1975-05-06
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Expires: 1994-06-21
Abstract
Abstract A safety guardrail support comprises first and second hollow vertical members, the latter being movably received in the former, a first clamp member secured to the lower end of the first vertical member and a second clamp member secured to the lower end of the second vertical member, upper and lower reinforcing assemblies extending from the lower ends of the first and second hollow vertical members respectively and being slidably engaged at a location spaced from the vertical members and a threaded rod extending interiorly of the first vertical member and threadedly engaging the second vertical member whereby the turning of the threaded rod causes the second clamp member to be raised or lowered in order to secure the apparatus on the open edge of the floor section of a building structure and concomitantly the lower reinforcing assembly slideably engages the upper assembly thereby supporting and reinforcing the support structure.
Inventors
- 👤 Jimmy R Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:53
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/32; E04G21/3204; E04G21/3223; E04G21/3233; E04G21/3242
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
194 words
A safety guardrail support apparatus comprising: a first hollow vertical member having means attached thereto for supporting a handrail, a first clamp member secured to said first vertical member adjacent the lower end thereof, an upper reinforcing assembly comprising a first rigid arm having one end attached to said first vertical member adjacent the lower end opposite said first clamp member and a sleeve member secured on the other end of said first arm, a second hollow vertical member movably received in said first vertical member, a second clamp member secured to said second vertical member adjacent the lower end thereof, a lower reinforcing assembly comprising a second rigid arm having one end attached to said second vertical member adjacent the lower end thereof opposite said second clamp member and a brace member secured on the other end of said second arm and extending through said sleeve of said upper reinforcing assembly, and a threaded rod extending interiorly along at least the upper portion of said first vertical member and threadedly engaging said second vertical member said second vertical member and second clamp membEr being raised or lowered when said threaded rod is turned.
Claim 2
Dependent Claim
194 words
A safety guardrail support apparatus comprising: a first hollow vertical member having means attached thereto for supporting a handrail, a first clamp member secured to said first vertical member adjacent the lower end thereof, an upper reinforcing assembly comprising a first rigid arm having one end attached to said first vertical member adjacent the lower end opposite said first clamp member and a sleeve member secured on the other end of said first arm, a second hollow vertical member movably received in said first vertical member, a second clamp member secured to said second vertical member adjacent the lower end thereof, a lower reinforcing assembly comprising a second rigid arm having one end attached to said second vertical member adjacent the lower end thereof opposite said second clamp member and a brace member secured on the other end of said second arm and extending through said sleeve of said upper reinforcing assembly, and a threaded rod extending interiorly along at least the upper portion of said first vertical member and threadedly engaging said second vertical member said second vertical member and second clamp membEr being raised or lowered when said threaded rod is turned.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 including means for holding the upper end of said threaded rod exposed exteriorly of said first vertical member.
Claim 4
Dependent Claim
31 words
The apparatus of claim 1 wherein said first and second clamp members each comprise an elongated bar extending normal to the vertical axis of said first and second vertical members respectively.
Claim 5
Dependent Claim
31 words
The apparatus of claim 3 wherein said first and second rigid arms each comprise an elongated bar extending normal to the vertical axis of said first and second vertical members respectively.
Claim 6
Dependent Claim
24 words
The apparatus of claim 4 wherein said brace member comprises an elongated rod substantially co-terminal with the upper end of said second vertical member.
Claim 7
Dependent Claim
65 words
The apparatus of claim 1 wherein said upper clamp member and said first rigid arm comprise a pair of elongated bars each bar oppositely secured to the lower end of said first hollow vertical member and said lower clamp member and said second rigid arm comprise a pair of elongated bars each bar oppositely secured to the lower end of said second hollow vertical member.
Claim 8
Dependent Claim
21 words
The apparatus of claim 6 including a front plate secured across the ends of said bars comprising said upper clamp member.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |