US4165111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collar for gas pipelines
Assignee: RACI SpA
•
Filing: 1977-09-21
•
Granted: 1979-08-21
•
Expires: 1997-09-21
Abstract
Abstract A collar for fitting onto a pipe, particularly for the purpose of inserting said pipe into another without damaging the lagging on the pipe of smaller diameter. Said collar consists of a flexible band with meshing teeth, which is wrapped about a pipe and its ends. This collar is secured by bringing said teeth into contact and thus closing the band around said pipe.
Inventors
- 👤 Gianni Zanichelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:39
CPC Classifications
F; F16; F16L; F16L7/00; F16L57/00; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1498
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
A collar for fitting onto a pipe in the form of a flexible band comprising: (a) a male end possessing two rows of teeth which lie parallel to the band axis and extend outwardly and laterally in respect to the band; (b) an opposite end which provides two individual rows of meshing teeth for accepting and securing the toothed male end; and centering ribs which traverse the width of the collar and which are positioned normal to the band axis.
Claim 2
Dependent Claim
80 words
A collar for fitting onto a pipe in the form of a flexible band comprising: (a) a male end possessing two rows of teeth which lie parallel to the band axis and extend outwardly and laterally in respect to the band; (b) an opposite end which provides two individual rows of meshing teeth for accepting and securing the toothed male end; and centering ribs which traverse the width of the collar and which are positioned normal to the band axis.
Claim 3
Dependent Claim
34 words
A collar according to claim 1 wherein the male end is secured to the meshing teeth of the opposite end by inserting the male end into the toothed guides provided in the opposite end.
Claim 4
Dependent Claim
58 words
A collar according to claim 2 wherein the toothed male end is brought into a securing contact with the meshing teeth by inserting the former into an aperture comprising: (a) several plates disposed above each row of meshing teeth; and (b) corresponding guide members disposed at essentially the same height as the said plates (a) and opposite thereto.
Claim 5
Dependent Claim
14 words
A collar according to claim 1 wherein the teeth of each end are staggered.
Claim 6
Dependent Claim
15 words
A collar according to claim 4 wherein the teeth have a pitch of 4 mm.
Claim 7
Dependent Claim
33 words
A collar according to claim 1 wherein the ends are provided with transverse projections for clamping the collar through a traction action to be exerted once the opposite ends are brought into contact.
Claim 8
Dependent Claim
19 words
A collar according to claim 6 wherein the transverse projections are of the same height as the centering ribs.
Claim 9
Dependent Claim
32 words
A collar according to claim 6 wherein the centering ribs and transverse projections are furnished with inclined ends to facilitate the introduction of the tube fitted with a collar into another tube.
Claim 10
Dependent Claim
22 words
A collar according to claim 1 wherein longitudinal projections having a triangular section are provided on the internal surface of the collar.
Claim 11
Dependent Claim
17 words
A collar according to claim 1 wherein the male end is provided with two easily removable protrusions.
Claim 12
Dependent Claim
21 words
A collar according to claim 1 for fitting onto tubes of 3-30 inch diameter, obtained by connecting together several individual collars.
Claim 13
Dependent Claim
26 words
A collar according to claim 1 characterized by longitudinal projections which provide an improved adherence of the collar to the pipe to which it is fitted.
Claim 14
Dependent Claim
27 words
A collar as claimed in claim 1 wherein the ends are provided with guide members by which the clamping of the collar onto the pipe is facilitated.
References Cited (Backward Citations)
US420076A
Cited
US1411930A
Cited
US3229998A
Cited
US3374308A
Cited
US3540487A
Cited
US3625549A
Cited
US3886630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |