Patent US3847494A successfully refreshed from Google Patents.
US3847494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling mechanism for tubular elements
Assignee: Precise TMP Inc
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Filing: 1971-09-30
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Granted: 1974-11-12
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Expires: 1991-09-30
Abstract
Abstract A two piece coupling mechanism is disclosed comprising a first and second element. The first element is a cup-shaped member having a cylindrical wall and a bottom wall forming a compartment for receiving cosmetics or the like. The second element is also of a cup-shaped configuration having a cylindrical and bottom walls of slightly larger dimensions in order to extend over the first element in a spaced relationship to form an insulative thermal air pocket therebetween. The coupling means for uniting the two elements comprises a grooved annular collar formed on the periphery of the cylindrical wall of the first element for receiving a plurality of projections extending inwardly from the rim of the second element. A pair of tightly fitting frictionally interengaging tubular extensions are formed on the bottom walls of both elements in a coaxial relationship with respect to the cylindrical walls. The interengaging tubular extensions function to absorb any bending or axial loads applied to the two elements and to increase the frictional interengagement therebetween upon the application of the loads in order to prevent the two elements from being separated.
Inventors
- 👤 E Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:18
CPC Classifications
A; A45; A45D; A45D40/00; A45D40/0068; B; B65; B65D; B65D11/00; B65D11/16; A45D2200/00; A45D2200/15; A45D2200/152; Y; Y10; Y10T; Y10T403/00; Y10T403/70
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
319 words
A coupling mechanism for permanently coupling together a pair of tubular elements comprising: a first element having an annular side wall with an annular groove on the outside surface thereof and a second element, the second element also having an annular side wall fitting over the first element side wall, the second element side wall further having an open end surrounding the first element and a flexible continuous closed end; projection means on the second element extending radially inward and beyond the inside surface of the second element side wall surface to provide a snap-in engagement with the annular groove thereby providing a first securement point between the elements; means for frictionally interengaging the first and second elements to provide a second securement point with at least two separate contact points between the elements comprising a first tubular splined extension member on the first element having an outside diameter at least slightly smaller than the inside diameter of the first element annular side wall and a second splined tubular extension member on the second element for frictional interengagement with the first tubular splined extension; and means for increasing the frictional engagement between said splined tubular extension members upon the application of an external load including that portion of the continuous flexible closed end extending between said separate contact points that permits relative movement between the contact points when said external load tends to disengage said projecting means from the annular groove and tends to stress the second element comprising an annular truncated conical portion forming part of said closed end adjacent the second tubular extension member and engaging the end of said first tubular extension member when said projection means is in engagement with said annular groove whereby any relative movement between said contact points increases the frictional interengagement of the extension members beyond the physical strength of at least one element to thereby permanently bond the elements together.
Claim 2
Dependent Claim
319 words
A coupling mechanism for permanently coupling together a pair of tubular elements comprising: a first element having an annular side wall with an annular groove on the outside surface thereof and a second element, the second element also having an annular side wall fitting over the first element side wall, the second element side wall further having an open end surrounding the first element and a flexible continuous closed end; projection means on the second element extending radially inward and beyond the inside surface of the second element side wall surface to provide a snap-in engagement with the annular groove thereby providing a first securement point between the elements; means for frictionally interengaging the first and second elements to provide a second securement point with at least two separate contact points between the elements comprising a first tubular splined extension member on the first element having an outside diameter at least slightly smaller than the inside diameter of the first element annular side wall and a second splined tubular extension member on the second element for frictional interengagement with the first tubular splined extension; and means for increasing the frictional engagement between said splined tubular extension members upon the application of an external load including that portion of the continuous flexible closed end extending between said separate contact points that permits relative movement between the contact points when said external load tends to disengage said projecting means from the annular groove and tends to stress the second element comprising an annular truncated conical portion forming part of said closed end adjacent the second tubular extension member and engaging the end of said first tubular extension member when said projection means is in engagement with said annular groove whereby any relative movement between said contact points increases the frictional interengagement of the extension members beyond the physical strength of at least one element to thereby permanently bond the elements together.
Claim 3
Dependent Claim
24 words
The invention of claim 1 wherein the first element is made of polypropylene material and the second element is made of a styrene material.
Claim 4
Dependent Claim
31 words
The invention of claim 1 further including a flange on the first element having the same diameter as the outside surface of the second element for bearing against the second element.
Claim 5
Dependent Claim
17 words
The invention of claim 1 wherein the securement points are only held together by mechanical frictional interengagement.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |