US3707304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Builders{3 {11 scaffolding
Assignee: RMD Kwikform Ltd
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Filing: 1970-09-08
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Granted: 1972-12-26
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Expires: 1990-09-08
Abstract
Abstract Builders'' scaffolding comprising means for securing two scaffolding uprights together in alignment including a split outer sleeve transversely pinned to the end of one upright to form a socket which grips the end of another upright when the pinning is tightened by means such as a wedge. The socket may be flared and may include an inner sleeve preferably shorter in the first upright. Pinning may be by means of a pin with a tee head aligned in a longitudinal groove in the outer sleeve and slotted to take a wedge parallel to the tee head. The wedge is preferably captive, tightened by driving it downwardly, and rotatable with the pin when loose to hang downwardly. A tension connection to permit assembled scaffolding to be crane lifted may be provided in addition by radial stud and hole engagement between the outer sleeve and the gripped end of the inserted upright.
Inventors
- 👤 Peter Eric Gostling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:01
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/02; E04G7/06; E04G7/20; F; F16; F16B; F16B2/00; F16B2/02; F16B2/14; F16B7/00; F16B7/04; F16B7/0406; F16B7/0426; Y; Y10; Y10T; Y10T403/00; Y10T403/30; Y10T403/55; Y10T403/551; Y10T403/57; Y10T403/5721; Y10T403/5761; Y10T403/5766; Y10T403/5793
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
Means for securing two scaffolding uprights together in alignment with each other comprising a split outer sleeve for attachment to the end of one of the uprights, an inner sleeve, a through pin to pass through aligned holes in the upright and the sleeves to hold the sleeves to the upright as an assembly, with the end of the outer sleeve projecting beyond the end of the upright to form a socket and with the inner sleeve extending as a spigot within the socket formed by the outer sleeve, and tightening means associated with the through pin to effect contraction of the socket to grip, in end-to-end alignment with the first upright, the end of the second upright inserted in the outer sleeve to embrace the inner sleeve.
Claim 2
Dependent Claim
128 words
Means for securing two scaffolding uprights together in alignment with each other comprising a split outer sleeve for attachment to the end of one of the uprights, an inner sleeve, a through pin to pass through aligned holes in the upright and the sleeves to hold the sleeves to the upright as an assembly, with the end of the outer sleeve projecting beyond the end of the upright to form a socket and with the inner sleeve extending as a spigot within the socket formed by the outer sleeve, and tightening means associated with the through pin to effect contraction of the socket to grip, in end-to-end alignment with the first upright, the end of the second upright inserted in the outer sleeve to embrace the inner sleeve.
Claim 3
Dependent Claim
37 words
Securing means according to claim 1, wherein one end of the outer sleeve is outwardly lipped so that the socket is of flared formation at its free end to provide ease of entry for the second upright.
Claim 4
Dependent Claim
47 words
Securing means according to claim 1, wherein the inner sleeve is of such shorter length from its through holes to its free end than is the outer sleeve, as to result in the latter engaging the second upright somewhat in advance of its engagement by the spigot.
Claim 5
Dependent Claim
140 words
Means for securing two scaffolding uprights together in alignment with each other comprising a split outer sleeve for attachment to the end of one of thE uprights, a through pin to pass through aligned holes in the upright and sleeve to hold the sleeve to the upright as an assembly, with the end of the sleeve projecting beyond the end of the upright to form a socket, and tightening means associated with the through pin to effect contraction of the socket to grip the end of the second upright offered thereinto in end-to-end alignment with the first upright, said tightening means comprising a wedge engaged and held captive in a slot extending diametrically through the pin, said wedge being arranged for wedging movement with one of its faces engaged against the sleeve and another against one end of the slot.
Claim 6
Dependent Claim
140 words
Means for securing two scaffolding uprights together in alignment with each other comprising a split outer sleeve for attachment to the end of one of thE uprights, a through pin to pass through aligned holes in the upright and sleeve to hold the sleeve to the upright as an assembly, with the end of the sleeve projecting beyond the end of the upright to form a socket, and tightening means associated with the through pin to effect contraction of the socket to grip the end of the second upright offered thereinto in end-to-end alignment with the first upright, said tightening means comprising a wedge engaged and held captive in a slot extending diametrically through the pin, said wedge being arranged for wedging movement with one of its faces engaged against the sleeve and another against one end of the slot.
Claim 7
Dependent Claim
42 words
Securing means according to claim 4, wherein the pin with the wedge in the slot thereof is rotatable to permit the wedge to be driven downwardly for tightening and also to permit the wedge to hang downwardly when loose in the slot.
Claim 8
Dependent Claim
56 words
Securing means according to claim 4, wherein the through pin is T-headed and the slot is formed in the same plane as the head of the T and the axis of the pin shank, means being provided to guide the head of the pin, and consequently the wedge, in a direction parallel to the sleeve axis.
Claim 9
Dependent Claim
29 words
Securing means according to claim 6, said guide means comprising a channel or trough extending longitudinally of the sleeve from the holes formed therein to receive the through pin.
Claim 10
Dependent Claim
127 words
Means for securing two scaffolding uprights together in alignment with each other comprising a split outer sleeve for attachment to the end of one of the uprights, a through pin to pass through aligned holes in the upright and sleeve to hold the sleeve to the upright as an assembly, with the end of the sleeve projecting beyond the end of the upright to form a socket, and tightening means associated with the through pin to effect contraction of the socket to grip the end of the second upright offered thereinto in end-to-end alignment with the first upright, said outer sleeve having a radial stud and hole engagement with the gripped end of the second upright in order to form a tension connection between said two uprights.
Claim 11
Dependent Claim
127 words
Means for securing two scaffolding uprights together in alignment with each other comprising a split outer sleeve for attachment to the end of one of the uprights, a through pin to pass through aligned holes in the upright and sleeve to hold the sleeve to the upright as an assembly, with the end of the sleeve projecting beyond the end of the upright to form a socket, and tightening means associated with the through pin to effect contraction of the socket to grip the end of the second upright offered thereinto in end-to-end alignment with the first upright, said outer sleeve having a radial stud and hole engagement with the gripped end of the second upright in order to form a tension connection between said two uprights.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |