US3830531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for flexible tubes
Assignee: Parker Hannifin Corp
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Filing: 1973-04-09
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Granted: 1974-08-20
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Expires: 1993-04-09
Abstract
Abstract A coupling for flexible tubes in which the coupling body has a bore to receive the tube and a tubular support that fits inside the tube. The tube is clamped against the support by a sleeve that is radially deformed between the body and a nut. The support at its inner end has a radial flange with circumferentially spaced fingers connected thereto that are doubled back over the support and are yieldably press fitted within the body bore so that the support is normally firmly held within the body but may be removed therefrom without damage to the support or body.
Inventors
- 👤 D Burge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:51
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/22; F16L33/223; F16L33/224
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A coupling for flexible tubes comprising a body having a bore, a support having a tubular portion receivable within said tube and having a radially outwardly extending flange at its inner end, said flange being connected to a series of circumferentially spaced fingers that extend from said flange generally axially toward the outer end of said tubular portion, said fingers having a yieldable press fit in said bore, and means connected with the body for clamping said tube against said tubular portion.
Claim 2
Dependent Claim
82 words
A coupling for flexible tubes comprising a body having a bore, a support having a tubular portion receivable within said tube and having a radially outwardly extending flange at its inner end, said flange being connected to a series of circumferentially spaced fingers that extend from said flange generally axially toward the outer end of said tubular portion, said fingers having a yieldable press fit in said bore, and means connected with the body for clamping said tube against said tubular portion.
Claim 3
Dependent Claim
30 words
The coupling of claim 1 in which said fingers are defined by axially extending slots that pass through said flange at a location spaced radially outward of said tubular portion.
Claim 4
Dependent Claim
27 words
The coupling of claim 1 in which the radially outer surfaces of said fingers initially lie in a cone having its vertex axially inwardly of said flange.
Claim 5
Dependent Claim
17 words
The coupling of claim 3 in which said cone has an included angle of about 16* .
Claim 6
Dependent Claim
27 words
The coupling of claim 1 in which said bore at its axially inner end terminates in a transverse shoulder, and said flange is engaged with said shoulder.
Claim 7
Dependent Claim
60 words
The coupling of claim 1 in which said fingers are defined by axially extending slots that pass through said flange, the side edges of said fingers as defined by said slots at said flange being substantially parallel to a radial plane that passes through the longitudinal axis of the support and through the circumferential mid point of the respective finger.
Claim 8
Dependent Claim
26 words
The coupling of claim 1 in which the diameter of the flange at said connection with said fingers is less than the diameter of said bore.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |