Patent US3725634A successfully refreshed from Google Patents.
US3725634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming t-slots in a machine tool table
Assignee: Kearney and Trecker Corp
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Filing: 1971-02-17
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Granted: 1973-04-03
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Expires: 1991-02-17
Abstract
Abstract Forming T-slots in a machine tool table by positioning a pair of throat strips in spaced relationship within a suitable groove provided in the table. The throat forming strips are supported in desired position by a removable supporting filler bar and are maintained in intimate contact with the groove side wall by wedge strips. The joint formed by the contact of each throat strip and the adjacent side wall of the table groove is subjected to a beam obtained from an electron beam welder to fuse the contacting surfaces into a unit structure.
Inventors
- 👤 K Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:22
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/0046; B23K15/0053; B23K15/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A method of fabricating a T-slot in a machine tool table comprising forming a channel in the machine tool table; positioning a metal strip on each side of an upper portion of the channel with a space between said metal strips to define the throat of the T-slot desired and a space beneath said metal strips constituting the head groove for receiving the head of a T-bolt; and fusing the material of the strips with the material of the table along the entire area of their contact to form a unitary structure.
Claim 2
Independent Claim
92 words
A method of fabricating a T-slot in a machine tool table comprising forming a channel in the machine tool table; positioning a metal strip on each side of an upper portion of the channel with a space between said metal strips to define the throat of the T-slot desired and a space beneath said metal strips constituting the head groove for receiving the head of a T-bolt; and fusing the material of the strips with the material of the table along the entire area of their contact to form a unitary structure.
Claim 3
Dependent Claim
118 words
A method as in claim 1 wherein a supporting member is inserted into the channel beneath said metal strips; said strips are of ferrous metal which are resting on the supporting member and are in intimate contact with the walls of the channel; said fusing step is completed by applying a beam from an electron beam welder progressively along the joint formed by the contact of the strips with the walls of the channel to fuse the material of the strips with the material of the table in the area of their contact; and removing the supporting member after fusion has been obtained to leave a space constituting the head groove for receiving the head of a T-bolt.
Claim 4
Dependent Claim
38 words
A method as in claim 2 wherein the upper edge surfaces of said metal strips are disposed in the plane in which the top surface of the table is located to define the throat portion of the T-slot.
Claim 5
Dependent Claim
79 words
A method as in claim 3 wherein said strips are maintained in position on the supporting member in intimate contact wIth the walls of the channel by a mechanical holding means; and said mechanical holding means are removed after fusion of the material of the strips with the material of the table is accomplished to leave a space between said metal strips which serves as the throat portion of the T-slot through which the shank of a T-bolt extends.
Claim 6
Dependent Claim
39 words
A method as in claim 4 wherein said mechanical holding means comprises a pair of wedge members arranged in interengaging relationship between the strips to urge and maintain the strips in intimate contact with the walls of the channel.
References Cited (Backward Citations)
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |