Patent US3600770A successfully refreshed from Google Patents.
US3600770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular clamps
Assignee: Meggitt UK Ltd
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Filing: 1969-10-20
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Granted: 1971-08-24
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Expires: 1989-10-20
Abstract
Abstract The invention relates to a circular clamp for clamping flanges, which comprises a body having a clamping strap supporting interiorly thereof at least one flange engaging member; and at least two lugs which are pulled together by a nut and bolt to tighten the body around the flanges, each lug being fast with a reinforced free end portion of the clamping strap, and the bolt being pivotally attached to one of the lugs. There will be two lugs and one nut and bolt arrangement when the clamp is in the form of a split ring, and there will be four lugs and two nut and bolt arrangements when the clamp is in the form of two separate half circles. Usually the clamping strap will have pivotal flange-engaging members attached to its inner face, and the flanges to be joined are preferably V-flanges.
Inventors
- 👤 Horace P Halling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:50
CPC Classifications
B; B65; B65D; B65D45/00; B65D45/32; F; F16; F16L; F16L23/00; F16L23/04; F16L23/08; F16L23/10; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1441
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
70 words
A circular clamp for clamp for clamping flanges, which comprises a body having a clamping strap supporting interiorly thereof at least one flange-engaging member and at least two lugs which are pulled together by a nut and bolt to tighten the body around the flanges, each lug being fast with a reinforced free end portion of the clamping strap, and the bolt being pivotally attached to one of the lugs.
Claim 2
Dependent Claim
70 words
A circular clamp for clamp for clamping flanges, which comprises a body having a clamping strap supporting interiorly thereof at least one flange-engaging member and at least two lugs which are pulled together by a nut and bolt to tighten the body around the flanges, each lug being fast with a reinforced free end portion of the clamping strap, and the bolt being pivotally attached to one of the lugs.
Claim 3
Dependent Claim
23 words
A clamp according to claim 1, in which each free end portion of the clamping strap is reinforced with a reinforcing strap portion.
Claim 4
Dependent Claim
25 words
A clamp according to claim 1 including safety means adapted to retain the clamp around parts to be joined if the bolt or bolts fail.
Claim 5
Dependent Claim
58 words
A clamp according to claim 3 in which the safety means comprises a link which is hinged to each lug bearing a bolt and is adapted to extend over each corresponding lug when the clamp is bolted up, the link being such that on failure of its associated bolt, it will retain the clamp loosely around the flanges.
Claim 6
Dependent Claim
64 words
A clamp according to claim 4 in which the link is provided with a slot through which a pin passes to secure the link to the clamp, the length of the slot being such as to allow the link to extend over the corresponding lug prior to the clamp being tightened and thereafter to prevent the clamp from separating completely if the bolt fails.
Claim 7
Dependent Claim
32 words
A clamp according to claim 4 in which the link is U-shaped, the base thereof being provided with a hole through which, in use, the free end of the hinged bolt passes.
Claim 8
Dependent Claim
21 words
A clamp according to claim 1 including at least two separate flange-engaging members which are each fast with the clamping strap.
Claim 9
Dependent Claim
28 words
A clamp according to claim 7 in which the flange-engaging members are joined by links such that the flange-engaging members can pivot radially with respect to each other.
Claim 10
Dependent Claim
18 words
A clamp according to claim 1 having only two free end portions and one nut and bolt arrangement.
Claim 11
Dependent Claim
23 words
A clamp according to claim 1 in which the body is formed in two separate portions, there being two nut and bolt arrangements.
Claim 12
Dependent Claim
20 words
A clamp according to claim 1 in which the inner surface of each flange-engaging member is V-shaped in cross section.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |