US4205707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe protector
Assignee: Hydril LLC
•
Filing: 1978-12-11
•
Granted: 1980-06-03
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Expires: 1998-12-11
Abstract
Abstract A pipe or rod protector includes structure to interfit the pipe or rod end, such structure including an end cap and a split ring tightenable to retain the structure on the pipe or rod end.
Inventors
- 👤 Robert S. Lundgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:50
CPC Classifications
B; B65; B65D; B65D59/00; B65D59/06; F; F16; F16L; F16L57/00; F16L57/005
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
164 words
In a protector for a pipe or rod end portion, the combination comprising (a) structure sized to telescopically interfit the pipe or rod end portion, (b) said structure including a cap to extend across the end of the pipe or rod, (c) said structure also including a C-shaped elastomeric split ring sized for telescopic reception on said end portion, the ring having a radially compressible body portion, (d) and connector means associated with the split ring for tightening the ring to exert force acting to retain said structure to the pipe or rod end, (e) said cap having a head to extend across the end of the pipe or rod, and a skirt telescopically interfitting said ring to be retained to the pipe end portion by said ring, the skirt consisting of compressible elastomeric material and having a bore portion sized to compressively engage an outer surface defined by the pipe or rod end in response to clamping of the skirt by the ring.
Claim 2
Dependent Claim
164 words
In a protector for a pipe or rod end portion, the combination comprising (a) structure sized to telescopically interfit the pipe or rod end portion, (b) said structure including a cap to extend across the end of the pipe or rod, (c) said structure also including a C-shaped elastomeric split ring sized for telescopic reception on said end portion, the ring having a radially compressible body portion, (d) and connector means associated with the split ring for tightening the ring to exert force acting to retain said structure to the pipe or rod end, (e) said cap having a head to extend across the end of the pipe or rod, and a skirt telescopically interfitting said ring to be retained to the pipe end portion by said ring, the skirt consisting of compressible elastomeric material and having a bore portion sized to compressively engage an outer surface defined by the pipe or rod end in response to clamping of the skirt by the ring.
Claim 3
Dependent Claim
30 words
The combination of claim 1 including said pipe or rod end having said end portion interfitting said structure, with said structure retained on said end portion by said split ring.
Claim 4
Dependent Claim
16 words
The combination of claim 2 wherein said end portion includes threading protectively overlapped by said structure.
Claim 5
Dependent Claim
19 words
The protector of claim 1 wherein said body portion defines a bore receiving a portion of said cap skirt.
Claim 6
Dependent Claim
25 words
The combination of claim 4 including said pipe or rod end having threading thereon, the threading protectively overlapped by said skirt and by said ring.
Claim 7
Dependent Claim
43 words
The combination of claim 1 wherein the cap has an elastomeric head, and a metallic plate confined in said head, the plate having a periphery to extend substantially in alignment with the radially outer extent of said end of the pipe or rod.
Claim 8
Dependent Claim
18 words
The combination of claim 1 including a C-shaped, flexible metallic reinforcement band confined in said elastomeric split ring.
Claim 9
Dependent Claim
21 words
The combination of claim 1 wherein said bore portion is axially tapered to engage said surface which defines a frusto-conical land.
Claim 10
Dependent Claim
24 words
The combination of claim 8 including said pipe or rod end having said land which is radially compressively engaged by said skirt bore portion.
Claim 11
Dependent Claim
23 words
The combination of claim 9 wherein the rod or pipe end has two-step threading thereon, the ring and skirt extending about said threading.
Claim 12
Dependent Claim
34 words
The combination of claim 10 wherein said threading is on the pipe exterior and is protectively encompassed by said ring and skirt, said land located between said threading and the end of the pipe.
Claim 13
Dependent Claim
13 words
The combination of claim 10 wherein said threading is on the pipe interior.
Claim 14
Dependent Claim
25 words
The combination of claim 9 wherein the ring also compressively engages the pipe or rod exterior surface at a location axially spaced from said skirt.
Claim 15
Dependent Claim
39 words
The combination of claim 1 including an annular interior surface defined by said structure which is located to compressively engage a land on the pipe or rod end portion to provide a seal proximate the end of said portion.
Claim 16
Dependent Claim
24 words
The combination of claim 14 including said pipe end which has internal threading, the skirt compressively engaging cylindrical outer surface extent of the pipe.
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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) | 1983-06-03 | 1983-12-03 | 1984-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-03 | 1987-12-03 | 1988-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-03 | 1991-12-03 | 1992-06-03 | $7700.00 | Window Closed / Lapsed |