Patent US4699364A successfully refreshed from Google Patents.
US4699364A
Expired / Lapsed
US
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Versatile knockdown fixture
Assignee: MEZHOTRASLEVOI GOLOVNOI KONSTRUKTORSKO-TEKHNOLOGICHESKY INSTITUT TEKHNOLOGICHESKOI OSNASTKI USSR KHARKOV
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Filing: 1986-04-22
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Granted: 1987-10-13
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Expires: 2006-04-22
Abstract
Abstract A versatile knockdown fixture includes datum members each of which is provided with at least two intersecting grooves, which are located on the side of mating faces and form, after the mating faces have been joined, unified spaces. At the intersection of the grooves, there is provided an annular recess where there is a sleeve with radial holes in its side. A cylindrical key is secured by an indent made at one of its ends in each hole, which key fits the space with a guaranteed interference. Within the area of contact with the key, the groove has a trapezoid cross section and a depth greater than one half of the diameter of the key.
Inventors
- 👤 Vasily D. Birjukov
- 👤 Vladimir V. Kolganenko
- 👤 Vsevolod V. Tsaregradsky
- 👤 Vladimir G. Darovsky
- 👤 Boris K. Titov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:57
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A versatile knockdown fixture comprising: datum members with mating faces; at least two intersecting grooves made in the datum members on the side of the mating faces and forming unified spaces after said mating faces have been joined; an annular recess provided at the intersection of the grooves; a sleeve having radial holes in its side and arranged in the annular recess; cylindrical keys, each having an indent at one of its ends, secured by means of said indent in said radial hole and arranged in one of said unified spaces with a guaranteed interference, said groove within the area of contact with said key being of a trapezoid cross section and having a depth greater than one half of the diameter of said key.
Claim 2
Dependent Claim
125 words
A versatile knockdown fixture comprising: datum members with mating faces; at least two intersecting grooves made in the datum members on the side of the mating faces and forming unified spaces after said mating faces have been joined; an annular recess provided at the intersection of the grooves; a sleeve having radial holes in its side and arranged in the annular recess; cylindrical keys, each having an indent at one of its ends, secured by means of said indent in said radial hole and arranged in one of said unified spaces with a guaranteed interference, said groove within the area of contact with said key being of a trapezoid cross section and having a depth greater than one half of the diameter of said key.
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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) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |