US3894331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of mounting a bushing to a container closure
Assignee: Greif International Holding BV
•
Filing: 1974-05-06
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Granted: 1975-07-15
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Expires: 1994-05-06
Abstract
Abstract A method of inserting a bushing into a collar in an opening of a container. The bushing has a thickened portion which engages the collar and a bottle neck shaped outer portion with a radially extending outwardly flanged edge adapted to be bent over the free edge of the collar to tightly grip it, preventing relative rotation. The method includes pushing the bushing into the collar so that its base engages the interior of the base of the collar and the bushing outer portion extends beyond the collar free edge and applying pressure radially outwardly on the inner surface of the bottle neck portion to bend the flanged edge toward the collar free edge.
Inventors
- 👤 Christian Ragettli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:08
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/08; B65D39/082; B65D39/084; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/967; Y10S411/968; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/4994; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53726
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A method for inserting an internally threaded bushing into a collar, the bushing having a normal wall thickness at its midsection, an outer portion of a thickness, less than said normal thickness, which is bent inwardly in the shape of a bottle neck with a radially extending outwardly flanged edge and a base having an enlarged thickness relative to said normal thickness; the collar having a base portion and an outer free edge; the method comprising pushing the bushing into the collar so that its base engages the interior of the base portion of the collar and the bushing outer portion extends beyond the collar free edge; and applying pressure radially outwardly on the inner surface of the bottle neck portion to bend the outwardly extending bushing flanged edge toward the collar free edge.
Claim 2
Independent Claim
134 words
A method for inserting an internally threaded bushing into a collar, the bushing having a normal wall thickness at its midsection, an outer portion of a thickness, less than said normal thickness, which is bent inwardly in the shape of a bottle neck with a radially extending outwardly flanged edge and a base having an enlarged thickness relative to said normal thickness; the collar having a base portion and an outer free edge; the method comprising pushing the bushing into the collar so that its base engages the interior of the base portion of the collar and the bushing outer portion extends beyond the collar free edge; and applying pressure radially outwardly on the inner surface of the bottle neck portion to bend the outwardly extending bushing flanged edge toward the collar free edge.
Claim 3
Dependent Claim
46 words
The method of claim 1 including inserting a conical mandrel into the bushing to apply said radial pressure, the mandrel being so shaped that during its inward movement, it is continuously contacting the interior wall of the bottle neck portion in the region of smallest diameter.
Claim 4
Dependent Claim
34 words
The method of claim 2 including applying axial pressure to the upper edge of the bushing after it has been forced radially outwardly by means of a radially outwardly projecting flange on the mandrel.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |