US4489961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal for flexible tube
Assignee: Singer Co
•
Filing: 1983-04-18
•
Granted: 1984-12-25
•
Expires: 2003-04-18
Abstract
Abstract Flexible tubing for use in connecting a pneumatic foot controller to a sewing machine is provided at one end with a detachable plastic connector including a tight fitting tube supporting sleeve and a serrated end fitting which is locked in place in the tubing with the sleeve.
Inventors
- 👤 Manfred R. Laidig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:00
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/22; F16L33/225
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
A multipart terminal for a flexible tube, said terminal including a flexible molded plastic sleeve in tight fitting supporting engagement with an end portion of the tube, the terminal also including a molded plastic end fitting with a male serrated end portion extending into a portion of the sleeve engaged length of the tube which is thereby held securely relative to both the fitting and sleeve, said fitting being formed with a through opening that is tapered in an opposite end portion of the fitting from the serrated portion, and a length of the sleeve, other than the part in engagement with that portion of the tube wherein the serrated male end portion of the fitting extends, being formed to render such length more flexible than the said other part.
Claim 2
Dependent Claim
130 words
A multipart terminal for a flexible tube, said terminal including a flexible molded plastic sleeve in tight fitting supporting engagement with an end portion of the tube, the terminal also including a molded plastic end fitting with a male serrated end portion extending into a portion of the sleeve engaged length of the tube which is thereby held securely relative to both the fitting and sleeve, said fitting being formed with a through opening that is tapered in an opposite end portion of the fitting from the serrated portion, and a length of the sleeve, other than the part in engagement with that portion of the tube wherein the serrated male end portion of the fitting extends, being formed to render such length more flexible than the said other part.
Claim 3
Dependent Claim
53 words
A multipart terminal according to claim 1 wherein said length of the sleeve, other than the part in engagement with that portion of the tube wherein the serrated male end portion of the fitting extends, is formed with reduced cross-sectional ringed portions to render such length more flexible than the said other part.
References Cited (Backward Citations)
US2304114A
Cited
US2525662A
Cited
US3225435A
Cited
US3603620A
Cited
US3711130A
Cited
US3784236A
Cited
US3858913A
Cited
US3817562A
Cited
US3791406A
Cited
US4343498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |