Patent US3606836A successfully refreshed from Google Patents.
Patent US4594019A successfully refreshed from Google Patents.
US4594019A
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US
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Device for connecting an upright and a horizontal member in a tubular metal scaffold for a building
Assignee: FAP PRATICUS SpA A CORPOF ITALY
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Filing: 1984-12-18
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Granted: 1986-06-10
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Expires: 2004-12-18
Abstract
Abstract A device for connecting a tubular horizontal member to a tubular upright in a scaffold for building, in which the horizontal member engages, by means of a fork, a tenon provided laterally on the upright, while a mutually parallel bolt and wedge extended through the fork and tenon to lock the fork on the tenon.
Inventors
- 👤 Guglielmo Maleci
- 👤 Tullio Latini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:48
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/30; E04G7/302; E04G7/306; E04G7/307; E04G7/32; F; F16; F16B; F16B9/00; F16B9/01; Y; Y10; Y10T; Y10T403/00; Y10T403/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A device for connecting an upright and a horizontal member in a tubular metal scaffold for building, comprising: a forked joint including a tenon fixed to the upright and a fork fixed to the horizontal member, which tenon and fork engage each other to define a male and female coupling when interengaged, and a pin and a wedge which are essentially parallel with each other and extend through the fork and tenon to lock the fork on the tenon.
Claim 2
Independent Claim
79 words
A device for connecting an upright and a horizontal member in a tubular metal scaffold for building, comprising: a forked joint including a tenon fixed to the upright and a fork fixed to the horizontal member, which tenon and fork engage each other to define a male and female coupling when interengaged, and a pin and a wedge which are essentially parallel with each other and extend through the fork and tenon to lock the fork on the tenon.
Claim 3
Dependent Claim
41 words
A device as defined in claim 1, wherein the wedge is removable, the pin is fixed to the fork in a lateral position, and the tenon defines a groove which is engaged by the pin against the action of the wedge.
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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |