US3740880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable barricade and sign
Assignee: 3M Co
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Filing: 1970-11-12
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Granted: 1973-06-26
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Expires: 1990-11-12
Abstract
Abstract A barricade is formed by a pair of oppositely disposed rigid legs joined by a pivoted brace assembly that maintains the legs parallel to one another to form a foldable frame for support of a flexible sign display. The frame is supported by similar spaced legs either pivotally connected thereto or joined by similar brace assemblies. Each leg is angle-bar shaped with the free edges facing the opposite legs. The brace assembly lies between the parallel legs so that when the legs are brought together the braces are enclosed between the flanges of the angle-bars.
Inventors
- 👤 B Sweet
- 👤 G Hundery
- 👤 C Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/02; E01F9/00; E01F9/60; E01F9/688
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
262 words
A foldable barricade sign, comprising: a pair of support legs, a common end of each leg being adapted to engage a supporting surface when the legs are upright; an expandable brace means pivotally interconnecting the pair of legs, said brace means being movable between alternate folded and expanded conditions for maintaining said legs parallel and abutting one another when said brace means is in its folded condition and for alternately maintaining said legs parallel and spaced apart when said brace means is in its expanded condition; said brace means having a pair of elongated criss-crossing braces that are pivotally interconnected together at the intersection of the braces defining a pivot connection; each brace having one end pivotally connected to one leg at a fixed pivot axis and an opposite end pivotally connected to the other leg at a fixed pivot axis; each brace having an articulating joint intermediate its ends, vertically spaced from the pivot connection to enable each brace to be folded and extended between said legs; said pivot connection being laterally offset from centerlines of the elongated braces in a vertical direction toward the articulating joints to enable the legs to abut when the brace means is in the folded condition; support means foldably joined to said first and second legs for engaging the supporting surface at a position spaced from the respective locations of engagement of said support surface by said legs while said brace means is in the extended condition; and sign means mounted between said legs for display when the brace means is in the extended condition.
Claim 2
Dependent Claim
262 words
A foldable barricade sign, comprising: a pair of support legs, a common end of each leg being adapted to engage a supporting surface when the legs are upright; an expandable brace means pivotally interconnecting the pair of legs, said brace means being movable between alternate folded and expanded conditions for maintaining said legs parallel and abutting one another when said brace means is in its folded condition and for alternately maintaining said legs parallel and spaced apart when said brace means is in its expanded condition; said brace means having a pair of elongated criss-crossing braces that are pivotally interconnected together at the intersection of the braces defining a pivot connection; each brace having one end pivotally connected to one leg at a fixed pivot axis and an opposite end pivotally connected to the other leg at a fixed pivot axis; each brace having an articulating joint intermediate its ends, vertically spaced from the pivot connection to enable each brace to be folded and extended between said legs; said pivot connection being laterally offset from centerlines of the elongated braces in a vertical direction toward the articulating joints to enable the legs to abut when the brace means is in the folded condition; support means foldably joined to said first and second legs for engaging the supporting surface at a position spaced from the respective locations of engagement of said support surface by said legs while said brace means is in the extended condition; and sign means mounted between said legs for display when the brace means is in the extended condition.
Claim 3
Dependent Claim
49 words
A device as set out in claim 1 wherein said support means comprises an identical pair of legs joined by identical brace means, the second pair of legs being respectively hinged to the first pair of legs at the ends opposite Thereof to those which engage said support surfaces.
Claim 4
Dependent Claim
119 words
A device as set out in claim 1 wherein said support means comprises an identical pair of legs joined by identical brace means, and further comprising: collapsible rigid brace means pivotally joined to a first leg of each of said pair of legs; collapsible rigid brace means pivotally joined to a second leg, of each of said pair of legs; said brace means joined to said first legs and second legs being movable between alternate collapsed and extended conditions for maintaining the respective legs joined thereby parallel and abutting one another when said brace means is in its collapsed condition or for alternately maintaining said legs parallel and spaced apart when said brace means are in their extended conditions.
Claim 5
Dependent Claim
37 words
The foldable barricade sign as defined in claim 3 where each leg has an opposing flange directed toward one another to enclose the brace means within the flanges when the brace means is in the folded condition.
Claim 6
Dependent Claim
92 words
A device as set out in claim 1 wherein said support means comprises a third leg; collapsible rigid brace means pivotally joined to each of said pair of legs and to said third leg, said last-named brace means being movable between alternate collapsed and extended conditions for maintaining said third leg parallel and abutting said pair of legs when said brace means is in its collapsed condition and for alternately maintaining said third leg parallel and spaced apart from said pair of legs when said brace means is in its extended condition.
Claim 7
Dependent Claim
64 words
The foldable barricade sign as defined in claim 1 wherein each brace has a long brace element extending from one leg to the articulating joint and a short brace element pivotally connected to the long brace element at the articulating joint and extending to the other leg and wherein the long brace elements criss-cross and are pivotally interconnected to each other at the intersection.
Claim 8
Dependent Claim
110 words
The foldable barricade sign as defined in claim 6 wherein the long brace element of one brace and short brace element of the other brace are pivotally connected to one leg at fixed pivot axes that are spaced a prescribed distance along the one leg and wherein the length of the long brace between its fixed pivot point on one leg and the articulating joint is equal to the prescribed distance plus the length of the short brace element from the articulating joint to its fixed pivot point on the other leg to enable the brace means to be completely folded to maintain the legs parallel and abutting one another.
Claim 9
Dependent Claim
41 words
The foldable barricade sign as defined in claim 6 wherein each long brace element has an outer end extending beyond the articulating joint with a releasable latching means on the other end for releasably locking the brace in the extended condition.
Claim 10
Dependent Claim
43 words
The collapsible barricade sign as defined in claim 8 wherein the releasable latching means includes means on the outer end of the long brace element for engaging the short brace element and limit the pivotal movement of the long and short brace elements.
Claim 11
Dependent Claim
39 words
In a foldable barricade sign as defined in claim 9 wherein the means on the outer end of the long brace elements engage the short brace element to prevent the brace from being fully extended in the expanded condition.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |