US4186948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joint clamp
Assignee: Individual
•
Filing: 1978-10-02
•
Granted: 1980-02-05
•
Expires: 1998-10-02
Abstract
Abstract A generally circular pipe joint clamp able to compress a flexible packer around a joint between substantially aligned pipes. The clamp comprises a plurality of plates forming a flexible shield. Each plate overlaps one neighboring plate and underlies the other neighboring plate. There is a joint in between each pair of neighboring plates except the plates at each end of the flexible shield to allow the plates to pivot relative to each other. Clamps allow a compressing force to be applied to the flexible shield.
Inventors
- 👤 Allan D. Cronk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:53
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L21/005; F16L25/00; F16L25/14; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1427
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A generally circular pipe joint clamp adapted to compress a flexible packer around a joint between substantially aligned pipes, the clamp comprising a plurality of plates forming a flexible shield, each plate overlapping one neighbouring plate and underlying the other neighbouring plate, a joint in between each pair of neighbouring plates except the plates at each end of the flexible shield to allow the plates to pivot relative to each other; and clamping means to provide a compressing force to be applied to the flexible shield.
Claim 2
Dependent Claim
86 words
A generally circular pipe joint clamp adapted to compress a flexible packer around a joint between substantially aligned pipes, the clamp comprising a plurality of plates forming a flexible shield, each plate overlapping one neighbouring plate and underlying the other neighbouring plate, a joint in between each pair of neighbouring plates except the plates at each end of the flexible shield to allow the plates to pivot relative to each other; and clamping means to provide a compressing force to be applied to the flexible shield.
Claim 3
Dependent Claim
27 words
A pipe joint clamp as claimed in claim 1 in which the joint comprises a single rivet at about the middle of each joint between neighbouring plates.
Claim 4
Dependent Claim
40 words
A pipe joint clamp as claimed in claim 2 in which the rivet engages enlongated holes in the neighbouring plates to permit variation in the amount of overlap of the plates and thus of the circumference of the flexible shield.
Claim 5
Dependent Claim
44 words
A pipe joint clamp as claimed in claim 1 in which each joint comprises two aligned slits, one adjacent each side of the flexible shield and a channel opening inwardly, formed between aligned slits, with the overlapping portions at each end of the channel.
Claim 6
Dependent Claim
24 words
A pipe joint clamp as claimed in claim 4 in which each channel has turned over, reinforcing lips at each end, adjacent each slit.
Claim 7
Dependent Claim
26 words
A pipe joint clamp as claimed in claim 1 in which the clamping means comprises worm drive straps positioned over each edge of the flexible shield.
Claim 8
Dependent Claim
19 words
A pipe joint clamp as claimed in claim 6 in which the straps are attached to the flexible shield.
References Cited (Backward Citations)
DE112634C
Cited
US722029A
Cited
US925033A
Cited
US1374866A
Cited
US1459126A
Cited
US2322213A
Cited
US2958549A
Cited
US3212799A
Cited
GB1108810A
Cited
US3325195A
Cited
US3359017A
Cited
SE322659B
Cited
US3600770A
Cited
CA935465A
Cited
DE2227177A1
Cited
US4026586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |