US3766768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for commencing a deforming operation, e. g. hydrostatic extrusion of a billet
Assignee: AT&T Inc
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Filing: 1972-06-22
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Granted: 1973-10-23
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Expires: 1992-06-22
Abstract
Abstract The forward end of the billet to be deformed, e.g., hydrostatically extruded, is provided with a billet nose prepared by securing in order of hardness a plurality of metallic wafers of varying hardnesses to provide the billet nose with a hardness gradient increasing from the forward end thereof toward the rearward end thereof. The wafers are secured to each other by brazing, diffusion bonding, explosive bonding, friction welding or pressure welding techniques.
Inventors
- 👤 F Fuchs
- 👤 Venkatesan P Swaminatha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:56
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/01; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/94; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
119 words
A billet comprising: a. a main body portion having a forward end; b. a billet nose having a rearward end and a forward end, the rearward end of said billet nose being mounted to the forward end of said main body portion; c. said billet nose comprising a plurality of wafers of materials of different hardnesses, the said wafers being arranged in order of said hardnesses so as to provide said billet nose with a hardness gradient increasing from the forward end toward the rearward end thereof, the hardness of the rearward end of the said billet nose not exceeding the hardness of said main body portion; d. adjacent wafers of said billet nose being secured to each other.
Claim 2
Dependent Claim
119 words
A billet comprising: a. a main body portion having a forward end; b. a billet nose having a rearward end and a forward end, the rearward end of said billet nose being mounted to the forward end of said main body portion; c. said billet nose comprising a plurality of wafers of materials of different hardnesses, the said wafers being arranged in order of said hardnesses so as to provide said billet nose with a hardness gradient increasing from the forward end toward the rearward end thereof, the hardness of the rearward end of the said billet nose not exceeding the hardness of said main body portion; d. adjacent wafers of said billet nose being secured to each other.
Claim 3
Dependent Claim
11 words
A billet as in claim 1 wherein said materials are metallic.
Claim 4
Dependent Claim
14 words
A billet as in claim 1 wherein adjacent wafers are brazed to each other.
Claim 5
Dependent Claim
15 words
A billet as in claim 1 wherein adjacent wafers are diffusion bonded to each other.
Claim 6
Dependent Claim
15 words
A billet as in claim 1 wherein adjacent wafers are explosively bonded to each other.
Claim 7
Dependent Claim
15 words
A billet as in claim 1 wherein adjacent wafers are friction welded to each other.
Claim 8
Dependent Claim
15 words
A billet as in claim 1 wherein adjacent wafers are pressure welded to each other.
Claim 9
Dependent Claim
128 words
Means for facilitating the commencement of deformation against a deforming agency of a billet having a forward end, said means comprising: a. a billet nose having a rearward end and a forward end; b. the rearward end of said billet nose being adapted to be mounted to the forward end of said billet; c. said billet nose comprising a plurality of wafers of materials of different hardnesses, the said wafers being arranged in order of said hardnesses so as to provide said billet nose with a hardness gradient increasing from the forward end toward the rearward end thereof, the hardness of the rearward end of said billet nose not exceeding the hardness of the said billet; d. adjacent wafers of said billet nose being secured to each other.
Claim 10
Dependent Claim
128 words
Means for facilitating the commencement of deformation against a deforming agency of a billet having a forward end, said means comprising: a. a billet nose having a rearward end and a forward end; b. the rearward end of said billet nose being adapted to be mounted to the forward end of said billet; c. said billet nose comprising a plurality of wafers of materials of different hardnesses, the said wafers being arranged in order of said hardnesses so as to provide said billet nose with a hardness gradient increasing from the forward end toward the rearward end thereof, the hardness of the rearward end of said billet nose not exceeding the hardness of the said billet; d. adjacent wafers of said billet nose being secured to each other.
Claim 11
Dependent Claim
10 words
Means as in claim 8 wherein said materials are metallic.
Claim 12
Dependent Claim
13 words
Means as in claim 8 wherein adjacent wafers are brazed to each other.
Claim 13
Dependent Claim
14 words
Means as in claim 8 wherein adjacent wafers are diffusion bonded to each other.
Claim 14
Dependent Claim
14 words
Means as in claim 8 wherein adjacent wafers are explosively bonded to each other.
Claim 15
Dependent Claim
14 words
Means as in claim 8 wherein adjacent wafers are friction welded to each other.
Claim 16
Dependent Claim
14 words
Means as in claim 8 wherein adjacent wafers are pressure welded to each other.
Claim 17
Dependent Claim
116 words
Method of commencing deformation against a deforming agency of a billet having a forward end, said method comprising: a. arranging a plurality of wafers of materials having different hardnesses ranging up to a hardness not in excess of the hardness of said billet in order of said hardnesses and securing adjacent wafers together to form a billet nose having a forward end and a rearward end with a hardness gradient increasing from said forward end toward said rearward end; b. securing the rearward end of said billet nose to the forward end of said billet; c. advancing said billet and said billet nose against the deforming agency to deform the billet nose and then the billet.
Claim 18
Dependent Claim
116 words
Method of commencing deformation against a deforming agency of a billet having a forward end, said method comprising: a. arranging a plurality of wafers of materials having different hardnesses ranging up to a hardness not in excess of the hardness of said billet in order of said hardnesses and securing adjacent wafers together to form a billet nose having a forward end and a rearward end with a hardness gradient increasing from said forward end toward said rearward end; b. securing the rearward end of said billet nose to the forward end of said billet; c. advancing said billet and said billet nose against the deforming agency to deform the billet nose and then the billet.
Claim 19
Dependent Claim
13 words
Method as in claim 15 wherein adjacent wafers are brazed to each other.
Claim 20
Dependent Claim
14 words
Method as in claim 15 wherein adjacent wafers are diffusion bonded to each other.
Claim 21
Dependent Claim
14 words
Method as in claim 15 wherein adjacent wafers are explosively bonded to each other.
Claim 22
Dependent Claim
14 words
Method as in claim 15 wherein adjacent wafers are friction welded to each other.
Claim 23
Dependent Claim
14 words
Method as in claim 15 wherein adjacent wafers are pressure welded to each other.
Claim 24
Dependent Claim
85 words
Method of preparing a billet nose adapted to be mounted to the forward end of a billet to facilitate deformation thereof, said method comprising: a. arranging a plurality of wafers of materials having different hardnesses ranging up to a hardness not in excess of the hardness of said billet in order of said hardnesses and securing adjacent wafers together to form a billet nose having a forward end and a rearward end with a hardness gradient increasing from said forward end toward said rearward end.
Claim 25
Dependent Claim
85 words
Method of preparing a billet nose adapted to be mounted to the forward end of a billet to facilitate deformation thereof, said method comprising: a. arranging a plurality of wafers of materials having different hardnesses ranging up to a hardness not in excess of the hardness of said billet in order of said hardnesses and securing adjacent wafers together to form a billet nose having a forward end and a rearward end with a hardness gradient increasing from said forward end toward said rearward end.
Claim 26
Dependent Claim
13 words
Method as in claim 21 wherein adjacent wafers are brazed to each other.
Claim 27
Dependent Claim
14 words
Method as in claim 21 wherein adjacent wafers are diffusion bonded to each other.
Claim 28
Dependent Claim
14 words
Method as in claim 21 wherein adjacent wafers are explosively bonded to each other.
Claim 29
Dependent Claim
14 words
Method as in claim 21 wherein adjacent wafers are friction welded to each other.
Claim 30
Dependent Claim
14 words
Method as in claim 21 wherein adjacent wafers are pressure welded to each other.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |