US4183691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking element
Assignee: INDUSTRIES EN HANDELSONDERNEMING BIJSTEDE BV
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Filing: 1978-04-11
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Granted: 1980-01-15
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Expires: 1998-04-11
Abstract
Abstract A locking element for securing two interfitting or cylindrical members or tubes together comprising a helical or curved flat spring having an elongated recess at one end thereof and an inwardly turned pin adjacent the other end thereof, each of said cylindrical members having an aperture therein, said apertures adapted to be aligned and said pin adapted to be inserted through said recess and aligned apertures, the spring member compressively locking the interfitted members securely together, said spring element being secured in compressive engagement with the outermost cylindrical member when the pin is removed from the locking engagement with the interfitted members.
Inventors
- 👤 Leonard Van Melle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:52
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/0406; F16B7/0413; F16B7/042; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/241; F16B2/245; F16B7/10; F16B7/105; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451; Y10T403/32459; Y10T403/32467; Y10T403/32475; Y10T403/32483; Y10T403/59; Y10T403/598; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A locking element for securing two interfitting cylindric portions against shifting, each said portion being provided with an aperture in the circumference, said locking element comprising a pin with a pre-biased resilient element connected therewith which, when said pin is disposed within the said apertures, encloses the two cylindric portions at least partially, the resilient element having such a length that, when the pin is withdrawn from the said apertures, the free end of the resilient element rests on the outer wall of the outermost cylindric portion enclosing said outermost portion over a sufficient distance, so as to prevent the locking element from being detached unintentionally, and said resilient element is a curved flat plate spring having an elongated recess in its free end, the width of said recess being at least equal to the diameter of the pin.
Claim 2
Dependent Claim
139 words
A locking element for securing two interfitting cylindric portions against shifting, each said portion being provided with an aperture in the circumference, said locking element comprising a pin with a pre-biased resilient element connected therewith which, when said pin is disposed within the said apertures, encloses the two cylindric portions at least partially, the resilient element having such a length that, when the pin is withdrawn from the said apertures, the free end of the resilient element rests on the outer wall of the outermost cylindric portion enclosing said outermost portion over a sufficient distance, so as to prevent the locking element from being detached unintentionally, and said resilient element is a curved flat plate spring having an elongated recess in its free end, the width of said recess being at least equal to the diameter of the pin.
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) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |