Patent US4277869A successfully refreshed from Google Patents.
US4277869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizer
Assignee: Individual
•
Filing: 1979-07-30
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Granted: 1981-07-14
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Expires: 1999-07-30
Abstract
Abstract An improved stabilizer is disclosed. In the preferred and illustrated embodiment, a built-up spline is disclosed. The spline is made by drilling a set of holes in a blank of relatively soft metal and inserting hardened inserts into the metal. Typical inserts are made of tungsten carbide. They may be brazed on the back side to firmly affix the inserts in holes drilled in the metal strip. The metal strip is welded to the stabilizer body. It has the advantage in that it can be refaced or built up after wear.
Inventors
- 👤 Charles A. Hartwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:45
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1078; B; B23; B23P; B23P15/00; E21B10/00; E21B10/46; E21B10/56; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49638
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
A method of fabricating a splined stabilizer comprising the steps of: (a) forming an opening completely through a metal spline body which opening extends from a front or outer face and intersects a back face of said body; (b) positioning an insert of material in said opening which insert is harder than the metal of said metal spline body; (c) joining said insert to said spline body at said back face by means of a brazing material; and (d) thereafter joining said spline body to a stabilizer body with the back face of said spline body against the stabilizer body.
Claim 2
Independent Claim
100 words
A method of fabricating a splined stabilizer comprising the steps of: (a) forming an opening completely through a metal spline body which opening extends from a front or outer face and intersects a back face of said body; (b) positioning an insert of material in said opening which insert is harder than the metal of said metal spline body; (c) joining said insert to said spline body at said back face by means of a brazing material; and (d) thereafter joining said spline body to a stabilizer body with the back face of said spline body against the stabilizer body.
Claim 3
Dependent Claim
45 words
The method of claim 1 including the subsequent step of adding a refacing metal to the outer face of said spline body which step is accomplished by heating said spline body to an elevated temperature to melt said refacing metal to bond to said spline.
Claim 4
Dependent Claim
29 words
The method of claim 2 including the further step of positioning at least first and second openings in said spline body positioned to overlap lengthwise of said spline body.
Claim 5
Dependent Claim
35 words
The method of claim 1 wherein the hole forming step forms a plurality of holes each extending completely through said spline body which holes overlap lengthwise of said body and pass through said spline body.
Claim 6
Dependent Claim
83 words
The method of claim 1 wherein the step of joining said inserts to said spline body includes (a) first positioning an unjoined insert in the opening wherein the opening extends fully through the spline body; (b) applying an unbonded braze material over the back face of said spline body adjacent to the opening and insert; and (c) heating said braze material to melt said braze material sufficiently to bond said insert to said spline body at said back face of said spline body.
Claim 7
Independent Claim
150 words
A method of fabricating a splined stabilizer comprising the steps of: (a) forming a plurality of openings in a metal spline body which openings extend from a front or outer face to a back face of said body; (b) positioning inserts of material in each of said openings which inserts are harder than the metal of said metal spline body; (c) joining said inserts to said spline body by: (1) first positioning unjoined inserts in the openings wherein the openings extend fully through the spline body; (2) applying an unbonded braze material over the full back face of said spline body adjacent to the openings and inserts; and (3) heating said braze material to melt said braze material sufficiently to bond said inserts to said spline body; and (d) thereafter joining said spline body to a stabilizer body with the back face of said spline body against the stabilizer body.
Claim 8
Independent Claim
150 words
A method of fabricating a splined stabilizer comprising the steps of: (a) forming a plurality of openings in a metal spline body which openings extend from a front or outer face to a back face of said body; (b) positioning inserts of material in each of said openings which inserts are harder than the metal of said metal spline body; (c) joining said inserts to said spline body by: (1) first positioning unjoined inserts in the openings wherein the openings extend fully through the spline body; (2) applying an unbonded braze material over the full back face of said spline body adjacent to the openings and inserts; and (3) heating said braze material to melt said braze material sufficiently to bond said inserts to said spline body; and (d) thereafter joining said spline body to a stabilizer body with the back face of said spline body against the stabilizer body.
Claim 9
Dependent Claim
36 words
The method of claim 6 wherein said braze material is applied prior to heating, and the step of heating is accomplished in a furnace heated to a level sufficient to melt and bond said braze material.
Claim 10
Dependent Claim
57 words
The method of claim 6 including the subsequent step of adding a refacing metal to the outer face of said spline which step is accomplished by heating said spline body to an elevated temperature to bond said refacing metal to said spline and which step is carried out after attachment of said spline body to the stabilizer.
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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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |