US3596600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shotgun shell
Assignee: Individual
•
Filing: 1968-11-26
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Granted: 1971-08-03
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Expires: 1988-11-26
Abstract
Abstract A shotgun shell having a plastic wad secured in an annular groove formed around the inner periphery of the shell case adjacent its open mouth to receive and retain the plastic wad. The wad is a concave-convex, or dome-shaped disc having an outer periphery of a size to closely fit within the open mouth of the shell case to radially align the peripheral edge of the wad with the groove. The wad is initially positioned into the open mouth of the shell case with the convex surface toward the open end of the case, then the wad is oil-canned, or snapped over center to expand the peripheral edge portion of the wad into the groove to seal and retain the wad in the shell case.
Inventors
- 👤 Jesse R Himmelsbach Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:54
CPC Classifications
F; F42; F42B; F42B7/00; F42B7/02; F42B7/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
166 words
A shotgun shell comprising a hollow cylindrical shell case having a head end and an open mouth end, an annular groove formed in and extending around the inner peripheral surface of said shell case adjacent said open mouth, and a normally concavoconvex disc wad mounted in said annular groove and closing said open mouth end, said disc wad being formed from a resilient synthetic resin material and having a smooth outer peripheral edge surface normally having a maximum diameter less than the maximum diameter of said annular groove, said disc being capable of being snapped over center from its normal condition to a sealing condition to reverse its concavo-convex configuration and to increase its maximum peripheral edge surface diameter, whereby said wad may be secured in said open mouth by positioning said outer peripheral surface adjacent said groove when said wad is in said normal condition then snapping said wad overcenter to project said outer peripheral surface into said annular groove to seal said open mouth.
Claim 2
Dependent Claim
166 words
A shotgun shell comprising a hollow cylindrical shell case having a head end and an open mouth end, an annular groove formed in and extending around the inner peripheral surface of said shell case adjacent said open mouth, and a normally concavoconvex disc wad mounted in said annular groove and closing said open mouth end, said disc wad being formed from a resilient synthetic resin material and having a smooth outer peripheral edge surface normally having a maximum diameter less than the maximum diameter of said annular groove, said disc being capable of being snapped over center from its normal condition to a sealing condition to reverse its concavo-convex configuration and to increase its maximum peripheral edge surface diameter, whereby said wad may be secured in said open mouth by positioning said outer peripheral surface adjacent said groove when said wad is in said normal condition then snapping said wad overcenter to project said outer peripheral surface into said annular groove to seal said open mouth.
Claim 3
Dependent Claim
34 words
The shotgun shell defined in claim 1 wherein the internal diameter of said shell case between said groove and said open end is greater than the diameter between said groove and said head end.
Claim 4
Dependent Claim
23 words
The shotgun shell defined in claim 2 wherein one wall of said groove defines a substantially radial shoulder facing said open mouth end.
Claim 5
Dependent Claim
43 words
The shotgun shell defined in claim 3 wherein the normal diameter of said wad is greater than the inner diameter of said shoulder whereby said shoulder provides a positive stop to limit the distance said wad may be inserted into said shell case.
Claim 6
Dependent Claim
34 words
The shotgun shell defined in claim 1 wherein said groove is of generally V-shaped configuration, and wherein one wall of said groove defines a substantially radially extending annular shoulder facing said open mouth end.
Claim 7
Dependent Claim
33 words
The shotgun shell defined in claim 5 wherein the diameter of said shell case between said annular shoulder and said open mouth end is greater than the inner diameter of said radial shoulder.
Claim 8
Dependent Claim
18 words
The shotgun shell defined in claim 6 wherein said annular groove is spaced from said open mouth end.
Claim 9
Dependent Claim
35 words
The shotgun shell defined in claim 6 wherein said wad comprises a substantially right circular cylindrical peripheral surface in said normal condition, and wherein said peripheral surface is substantially frustoconical when in said sealing condition.
Claim 10
Dependent Claim
27 words
The shotgun shell defined in claim 1 wherein said shell case applies a radially compressive force to said wad when said wad is installed in said groove.
Claim 11
Dependent Claim
18 words
The shotgun shell defined in claim 1 wherein said shell case is formed from a synthetic resin material.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |