Patent US4261550A successfully refreshed from Google Patents.
US4261550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable handrail structure
Assignee: Individual
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Filing: 1980-02-28
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Granted: 1981-04-14
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Expires: 2000-02-28
Abstract
Abstract A hollow handrail is pivotally connected at one end to a fixed bracket. A brace is pivotally connected at one end to another fixed bracket vertically aligned with the first-mentioned bracket. A slide is mounted in the hollow handrail and is pivotally connected with the other end of the brace. Locking means is provided on the slide for locking the handrail and brace in folded position, or in any desired angular position of adjustment. When the handrail is in its folded position, the brace is received and enclosed within the handrail.
Inventors
- 👤 Miller H. Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:52
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; B; B60; B60N; B60N3/00; E04F11/1865
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
119 words
A foldable handrail structure, comprising: an upper hinge bracket to be mounted upon a fixed support; a handrail; means pivotally connecting the inner end of said handrail to said upper hinge bracket, the outer end of said handrail being free; a lower hinge bracket to be mounted upon said fixed support in vertical alignment with said upper hinge bracket; a brace; means pivotally connecting the inner end of said brace to said lower hinge bracket; a slide mounted upon said handrail for movement lengthwise thereon; means pivotally connecting the outer end of said brace to said slide; and means arranged to lock said slide and brace to said handrail, with the handrail disposed in a desired position of adjustment.
Claim 2
Dependent Claim
119 words
A foldable handrail structure, comprising: an upper hinge bracket to be mounted upon a fixed support; a handrail; means pivotally connecting the inner end of said handrail to said upper hinge bracket, the outer end of said handrail being free; a lower hinge bracket to be mounted upon said fixed support in vertical alignment with said upper hinge bracket; a brace; means pivotally connecting the inner end of said brace to said lower hinge bracket; a slide mounted upon said handrail for movement lengthwise thereon; means pivotally connecting the outer end of said brace to said slide; and means arranged to lock said slide and brace to said handrail, with the handrail disposed in a desired position of adjustment.
Claim 3
Dependent Claim
31 words
A handrail structure as described in claim 1, wherein the locking means is mounted on the slide at a location inwardly of the means pivotally connecting the brace to said slide.
Claim 4
Dependent Claim
39 words
A foldable handrail structure as described in claim 1, in which the handrail is hollow, generally rectangular in transverse cross-section and has flanges at its lower side extending inwardly toward each other, but having their confronting edges spaced apart.
Claim 5
Dependent Claim
40 words
A handrail structure as described in claim 3, wherein the slide is U-shaped in transverse cross-section and is mounted in the handrail in inverted position, said slide having a base and sides that fit with sliding clearance in the handrail.
Claim 6
Dependent Claim
47 words
A handrail structure as described in claim 4, wherein the base of the slide has an opening; and wherein the locking means comprises a threaded bushing mounted in said opening; and a threaded member mounted in said bushing so that its inner end can engage said handrail.
Claim 7
Dependent Claim
41 words
A handrail structure as described in claim 4, wherein the brace is narrower in width than the space between the flanges on the handrail and is receivable in the handrail between said flanges when the handrail is in its folded-down position.
Claim 8
Dependent Claim
22 words
A handrail structure as described in claim 1, wherein the lower hinge bracket is narrower in width than the upper hinge bracket.
Claim 9
Dependent Claim
45 words
A foldable handrail structure as described in claim 1, wherein the portion of the slide outwardly of its pivotal connection to the brace is extra long so that it projects beyond the free end of the handrail and serves as an extension of the handrail.
Claim 10
Dependent Claim
35 words
A foldable handrail structure as described in claim 1, wherein a pair of mounting plates is provided for mounting upon the fixed support and one of the hinge brackets overlies each of said mounting plates.
Claim 11
Dependent Claim
39 words
A foldable handrail structure as described in claim 1, wherein the upper hinge mounting plate comprises an elongated strip having a lateral extension on one side edge thereof; and a hinge bracket to be mounted upon said lateral extension.
Claim 12
Dependent Claim
25 words
A foldable handrail structure as described in claim 1, wherein the outer surface of the handrail has ridges thereon to provide a safety hand grip.
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) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |