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US4395067A Expired / Lapsed US ⏱️ 0.0 years remaining

Lifting assembly

Assignee: Spanset Inter AG
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Filing: 1981-06-25
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Granted: 1983-07-26
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Expires: 2001-06-25
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Abstract

Abstract A lifting assembly comprises a cloverleaf lifting sling in combination with a base of weldable plastics sheet material, the base having welds serving to hold the sling in its cloverleaf configuration.

Inventors

  • 👤 Peter D. L. Robin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 22:41
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/12; B66C1/18

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 60 words
A lifting assembly, comprising: a cloverleaf lifting sling in combination with a base of plastics sheet material, said sling having a central portion and four loop portions forming a cloverleaf configuration, said base serving to hold said central portion to maintain the sling in its cloverleaf configuration, and having peripheral sleeve means for storing said loop portions of the sling.
Claim 2
Dependent Claim 60 words
A lifting assembly, comprising: a cloverleaf lifting sling in combination with a base of plastics sheet material, said sling having a central portion and four loop portions forming a cloverleaf configuration, said base serving to hold said central portion to maintain the sling in its cloverleaf configuration, and having peripheral sleeve means for storing said loop portions of the sling.
Claim 3
Dependent Claim 32 words
An assembly as claimed in claim 1, wherein the base comprises two sheets of weldable plastics material between which said central portion of the sling is trapped by welds uniting the sheets.
Claim 4
Dependent Claim 22 words
An assembly as claimed in claim 1 wherein said base is of weldable material and has welds for holding said central portion.
Claim 5
Dependent Claim 33 words
An assembly as claimed in claim 3 or 2, wherein the sling has an outer surface of weldable plastics material and at least some of the welds unite the base with the sling.
Claim 6
Dependent Claim 18 words
An assembly as claimed in claim 4, wherein the welds define inner edges of said peripheral sleeve means.
Claim 7
Dependent Claim 23 words
An assembly as claimed in claim 5, wherein the outer edges of the peripheral sleeve means are closed to contain the loop portions.
Claim 8
Dependent Claim 40 words
An assembly as claimed in claim 6, wherein the peripheral sleeve means comprises sleeves extending along two opposed edges of the base, and each sleeve receives two loop portions extending from opposite ends of the sleeve and overlapping each other.
Claim 9
Dependent Claim 22 words
An assembly as claimed in claim 1, wherein the base is a single sheet having flaps turned-over to form said sleeve means.
Claim 10
Dependent Claim 132 words
A lifting assembly comprising: a cloverleaf lifting sling in combination with a base of weldable plastics sheet material, said sling having a central portion and four loop portions forming a cloverleaf configuration; said base having welds serving to maintain the sling in its cloverleaf configuration and having peripheral sleeve formations for receiving said loop portions; the sling having an outer surface of weldable plastics material, and at least some of the welds uniting said base with the sling; the welds defining inner edges of said peripheral sleeve formations; the outer edges of said peripheral formations being closed to contain said loop portions; and said peripheral formations extending along two opposed edges of said base, each such formation receiving two loop portions extending from opposite ends of the formation and overlapping each other.
Claim 11
Dependent Claim 132 words
A lifting assembly comprising: a cloverleaf lifting sling in combination with a base of weldable plastics sheet material, said sling having a central portion and four loop portions forming a cloverleaf configuration; said base having welds serving to maintain the sling in its cloverleaf configuration and having peripheral sleeve formations for receiving said loop portions; the sling having an outer surface of weldable plastics material, and at least some of the welds uniting said base with the sling; the welds defining inner edges of said peripheral sleeve formations; the outer edges of said peripheral formations being closed to contain said loop portions; and said peripheral formations extending along two opposed edges of said base, each such formation receiving two loop portions extending from opposite ends of the formation and overlapping each other.
Claim 12
Dependent Claim 32 words
An assembly as claimed in claim 9 wherein said base comprises two sheets of weldable plastics material between which said central portion of the sling is trapped by welds uniting the sheets.

References Cited (Backward Citations)

US2687321A Cited
US2740445A Cited
US3011820A Cited
US3563433A Cited
DE1812990A1 Cited
DE2634975A1 Cited
FR2376815A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-07-25 1987-01-24 1987-07-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-07-25 1991-01-24 1991-07-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-07-25 1995-01-24 1995-07-26 $7700.00 Window Closed / Lapsed

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