US3822870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcing members for rubber articles
Assignee: Individual
•
Filing: 1972-05-25
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Granted: 1974-07-09
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Expires: 1992-05-25
Abstract
Abstract A reinforcing member for a rubber article in the form of a ring or hollow sleeve comprises a flexible hoop made from a thin and elastic strip of sheet metal wound into a spiral of several convolutions which latter are superimposed and held solidly together to form an annular member capable of being elastically deformed under flexion when stressed by a load applied perpendicularly to the axis of the coil. The invention also relates to articles such as shock-absorbers, particularly marine buffers, and hoses for pumping fluids, and reinforced by such reinforcing members.
Inventors
- 👤 J Champleboux
- 👤 R Delaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:41
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; B; B29; B29D; B29D23/00; B29D23/001; F16F; F16F1/00; F16F1/36; F16F1/42; F16F1/422; F16F1/426; F16F3/00; F16F3/08; F16F3/10; F16F3/12; B29K; B29K2021/00; B29K2105/00; B29K2105/06; F16F2236/00; F16F2236/02; F16F2236/025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
119 words
An article comprising a rubber member which is annular in cross-section and which is elastically deformable to support a load directed perpendicularly to its axis and at least one annular reinforcing member which is embedded in said rUbber member to encircle the axis thereof and which is elastically deformable in the direction perpendicular to its axis said reinforcing member comprising at least one hoop made from a thin and flexible strip of sheet metal wound in a flat spiral of several convolutions, said convolutions being superimposed and held solidly one to another whereby when the article is stressed by a load exerted perpendicularly to the axis of the hoop, both said hoop and said rubber member are elastically deformed.
Claim 2
Dependent Claim
119 words
An article comprising a rubber member which is annular in cross-section and which is elastically deformable to support a load directed perpendicularly to its axis and at least one annular reinforcing member which is embedded in said rUbber member to encircle the axis thereof and which is elastically deformable in the direction perpendicular to its axis said reinforcing member comprising at least one hoop made from a thin and flexible strip of sheet metal wound in a flat spiral of several convolutions, said convolutions being superimposed and held solidly one to another whereby when the article is stressed by a load exerted perpendicularly to the axis of the hoop, both said hoop and said rubber member are elastically deformed.
Claim 3
Dependent Claim
30 words
An article according to claim 1, wherein the superimposed convolutions of the spirally wound strip are held solidly together by means of clips distributed around the periphery of the hoop.
Claim 4
Dependent Claim
38 words
An article according to claim 2, in which said annular reinforcing member comprises a plurality of hoops of the same diameter which are juxtaposed and held solidly together by common clips distributed around the periphery of the member.
Claim 5
Dependent Claim
39 words
An article according to claim 1, wherein the superimposed convolutions of the spirally wound strip are held solidly together by means of a thin layer of rubber interposed between the convolutions and adhering to the metal of the strip.
Claim 6
Dependent Claim
39 words
An article according to claim 1 wherein the rubber member is in the form of a sleeve and said article comprises a plurality of such annular reinforcing members which are spaced apart in the longitudinal direction of the sleeve.
Claim 7
Dependent Claim
16 words
An article according to claim 5 wherein the annular reinforcing members are arranged in concentric pairs.
Claim 8
Dependent Claim
36 words
An article according to claim 5 wherein at least one reinforcing layer of cords is embedded in the wall of the sleeve, said cords being orientated at an angle to the generating lines of the sleeve.
Claim 9
Dependent Claim
31 words
An article according to claim 7, and including two reinforcing layers embedded in the wall of the sleeve and radially spaced apart and between which said annular reinforcing members are arranged.
Claim 10
Dependent Claim
35 words
An article according to claim 5 and forming a shock absorbing device, the thickness of the wall of the sleeve exposed to impacts being less than 25 percent of the external diameter of said wall.
Claim 11
Dependent Claim
22 words
An article according to claim 9, wherein the interior of said sleeve is at least partly taken up by a cellular material.
Claim 12
Dependent Claim
70 words
An article according to claim 5 wherein the sleeve comprises reinforcing layers made up of obliquely orientated cords, said article forming a flexible hose for pumping liquids, said reinforcing layers being formed from at least two adjacent layers made up of cords helically wound in different directions at an angle of approximately 55* with respect to the generating lines of said hose whereby to resist internal pressure within the hose.
Claim 13
Dependent Claim
24 words
An article according to claim 11, wherein the annular reinforcing members are placed outside the two superimposed layers of cords resisting the internal pressure.
Claim 14
Dependent Claim
29 words
An article according to claim 12, and including at least one additional protective layer embedded in the wall of said hose and situated externally of said annular reinforcing members.
Claim 15
Dependent Claim
107 words
A reinforcing member for a rubber article of annular cross-section and elastically deformable to support a load directed perpendicularly to its axis, said reinforcing member being of annular form and comprising at least one hoop which is elastically deformable in the direction perpendicular to its axis and which is made from a thin and flexible strip of sheet metal wound in a flat spiral of several convolutions, said convolutions being superimposed and held solidly one to another by means of clips distributed around the periphery of the hoop, whereby when the hoop is stressed by a load exerted perpendicularly to its axis, said hoop is elastically deformed.
Claim 16
Dependent Claim
107 words
A reinforcing member for a rubber article of annular cross-section and elastically deformable to support a load directed perpendicularly to its axis, said reinforcing member being of annular form and comprising at least one hoop which is elastically deformable in the direction perpendicular to its axis and which is made from a thin and flexible strip of sheet metal wound in a flat spiral of several convolutions, said convolutions being superimposed and held solidly one to another by means of clips distributed around the periphery of the hoop, whereby when the hoop is stressed by a load exerted perpendicularly to its axis, said hoop is elastically deformed.
Claim 17
Dependent Claim
34 words
A reinforcing member according to claim 14 and comprising a plurality of hoops of the same diameter which are juxtaposed and held solidly together by common clips distributed around the periphery of the member.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |