US3885293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making vented test barrel assembly for revolver ammunition
Assignee: Remington Arms Co LLC
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Filing: 1974-07-10
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Granted: 1975-05-27
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Expires: 1994-07-10
Abstract
Abstract A test barrel assembly for a universal receiver includes a cylinder, having a cartridge-receiving chamber, and a barrel secured to the cylinder in a manner such that a rifled bore of the barrel is in axial alignment with the chamber. Spacer means between the cylinder and barrel provides a gap of predetermined thickness therebetween and the resulting controlled venting of propellant gases through the gap during firing results in reproducible pressure and velocity readings which can be used to accurately predict actual performance of a cartridge in a revolver. Manufacture of the cylinder and barrel from a single piece of steel ensures proper alignment and uniform spacing of these parts.
Inventors
- 👤 Jr Charles H Bateman
- 👤 Allan A Campbell
- 👤 James J Capasso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:36
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/14; B; B23; B23P; B23P17/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49792; Y10T29/49796; Y10T29/49826; Y10T29/49895; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
A method of manufacturing a test barrel assembly for testing a revolver cartridge from a metal blank, said method comprising the steps of forming a longitudinal passage through the metal blank, cutting the blank to form a barrel portion and a cylinder portion each including a section of the longitudinal passage, attaching the barrel portion to the cylinder portion with the sections of the longitudinal passage in axial alignment and with a gap of predetermined thickness between the barrel portion and the cylinder portion.
Claim 2
Independent Claim
84 words
A method of manufacturing a test barrel assembly for testing a revolver cartridge from a metal blank, said method comprising the steps of forming a longitudinal passage through the metal blank, cutting the blank to form a barrel portion and a cylinder portion each including a section of the longitudinal passage, attaching the barrel portion to the cylinder portion with the sections of the longitudinal passage in axial alignment and with a gap of predetermined thickness between the barrel portion and the cylinder portion.
Claim 3
Dependent Claim
65 words
A method as in claim 1 wherein attaching the barrel portion to the cylinder portion includes the steps of positioning the barrel portion and cylinder portion with the sections of said longitudinal passage in axial alignment, positioning spacer means between the cylinder portion and the barrel portion, and securing the cylindEr portion to the barrel portion with the spacer means held tightly between said portions.
Claim 4
Dependent Claim
51 words
A method as in claim 2 wherein a plurality of aligned pairs of attachment openings are drilled in the barrel portion and the cylinder portion before said blank is cut, and the barrel portion and cylinder portion are secured by threaded fasteners in each of the aligned pairs of attachment openings.
Claim 5
Dependent Claim
27 words
A method as in claim 3 wherein said threaded fasteners are passed through openings in said spacer means when securing the barrel portion to the cylinder portion.
Claim 6
Independent Claim
143 words
A method of manufacturing, from a cylindrical metal blank having a thick portion and a thin portion, apparatus for testing a revolver cartridge, said method comprising the steps of forming a longitudinal rifled passage through the metal blank, cutting a radial groove in the thick portion of the blank to form a cylinder portion, a barrel portion and a central portion, drilling a plurality of longitudinal attachment openings, each extending into the barrel portion and the cylinder portion, cutting through the central portion to separate the barrel portion from the cylinder portion, forming a chamber in the cylinder portion, positioning a mandrel in the longitudinal passage in the cylinder portion and the barrel portion, positioning spacer means between the cylinder portion and the barrel portion, and attaching the cylinder portion to the barrel portion with threaded attachment means in the longitudinal attachment openings.
Claim 7
Independent Claim
143 words
A method of manufacturing, from a cylindrical metal blank having a thick portion and a thin portion, apparatus for testing a revolver cartridge, said method comprising the steps of forming a longitudinal rifled passage through the metal blank, cutting a radial groove in the thick portion of the blank to form a cylinder portion, a barrel portion and a central portion, drilling a plurality of longitudinal attachment openings, each extending into the barrel portion and the cylinder portion, cutting through the central portion to separate the barrel portion from the cylinder portion, forming a chamber in the cylinder portion, positioning a mandrel in the longitudinal passage in the cylinder portion and the barrel portion, positioning spacer means between the cylinder portion and the barrel portion, and attaching the cylinder portion to the barrel portion with threaded attachment means in the longitudinal attachment openings.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |