US3647110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded barrel
Assignee: Mauser KG
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Filing: 1970-04-06
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Granted: 1972-03-07
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Expires: 1990-04-06
Abstract
Abstract One end wall of a molded barrel of thermoplastic material has a general plane and is provided with at least two depressions at opposite diametric sides. A tubular portion is located in each depression and of one piece with the end wall, each of the tubular portions communicating with the interior of the barrel and terminating in the general plane. Reinforcing webs are provided in the respective depressions at that side of the associated projection which faces at the middle of the one end wall and these reinforcing webs are each of one piece with the one end wall and the respective projection, bridging the respective depression.
Inventors
- 👤 Wilhelm Hammes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:48
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/12; B65D39/00; B65D39/08; B65D39/082
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
135 words
A barrel of thermoplastic material comprising a circumferential wall; a pair of spaced end walls one of which has a general plane; at least two depressions in said one end wall at opposite diametric sides thereof; a tubular projections located in each depression and being of one piece with said one end wall, each of said tubular projections communicating with the interior of said barrel and terminating in said general plane; and reinforcing webs in the respective depressions at that side of the associated projection which faces the middle of said one end wall, said reinforcing webs being of one piece with said one end wall and the respective projection connected to said projection only within the upper region thereof so as to bridge the depression between said one end wall and the respective projection.
Claim 2
Dependent Claim
135 words
A barrel of thermoplastic material comprising a circumferential wall; a pair of spaced end walls one of which has a general plane; at least two depressions in said one end wall at opposite diametric sides thereof; a tubular projections located in each depression and being of one piece with said one end wall, each of said tubular projections communicating with the interior of said barrel and terminating in said general plane; and reinforcing webs in the respective depressions at that side of the associated projection which faces the middle of said one end wall, said reinforcing webs being of one piece with said one end wall and the respective projection connected to said projection only within the upper region thereof so as to bridge the depression between said one end wall and the respective projection.
Claim 3
Dependent Claim
38 words
A barrel as defined in claim 1, wherein said barrel is blow molded, and wherein said webs reinforce said projections against dislocations resulting from the development of shrinkage stresses in said barrel subsequent to molding of the same.
Claim 4
Dependent Claim
40 words
A barrel as defined in claim 1, said projections each being provided with an inner circumferential surface; and further comprising internal screw threads provided in each of said inner circumferential surfaces adjacent the open ends of the respective tubular projections.
Claim 5
Dependent Claim
48 words
A barrel as defined in claim 1; said projections each having an inner circumferential surface which includes, at a location inwardly spaced from the respective open end of said projections, a first inwardly convergent sealing surface portion, and inwardly adjacent to the same a second cylindrical surface portion.
Claim 6
Dependent Claim
29 words
A barrel as defined in claim 4, wherein said projections have walls which are circumferentially cinched in inward directions to thereby provide said first inwardly convergent sealing surface portion.
Claim 7
Dependent Claim
16 words
A barrel as defined in claim 4, wherein said first sealing surface portion is conically convergent.
Claim 8
Dependent Claim
55 words
A barrel as defined in claim 4, wherein each of said projections has a first end merging with said one end wall and a free second end, the respective web being of one piece with the projection intermediate said ends; and wherein said sealing surface portions are provided intermediate the respective first end and web.
Claim 9
Dependent Claim
50 words
A barrel as defined in claim 4; further comprising a closure member for each of said projections and each including a ring seal adapted for sealing engagement with the respective first sealing surface portion, and a circumferentially complete edge adapted for sealing engagement with the respective second sealing surface portion.
Claim 10
Dependent Claim
57 words
A barrel as defined in claim 4, said inner circumferential surfaces being provided with screw threads adjacent the respective open end; and wherein said closure members are cap-shaped and each include a transverse wall and an extension receivable in the respective open end and formed with screwthreads matingly engageable with these on the respective inner circumferential surface.
Claim 11
Dependent Claim
17 words
A barrel as defined in claim 9, said edge being a free edge of the respective extension.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |