Patent US4531279A successfully refreshed from Google Patents.
US4531279A
Expired / Lapsed
US
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Method of making a leakproof joint
Assignee: Robertshaw Controls Co
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Filing: 1982-08-23
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Granted: 1985-07-30
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Expires: 2002-08-23
Abstract
Abstract A leakproof joint construction for a pair of members disposed in abutting relation and method and apparatus for making the same are provided, the leakproof joint construction having part of one of the members deformed into an adjacent part of the other of the members so that the parts of the members are disposed completely beyond the plane of the outer surface of the other member while respectively being integrally interconnected to the remainder of the members by tubular portions of the members. The parts are interlocked together by an outward staking of the part of the one member into the tubular portion of the other member by a compaction of the parts, the parts and the tubular portions of the members respectively defining like polygonal configurations.
Inventors
- 👤 James C. Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:06
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/03; B21D39/031; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/49943; Y10T29/53; Y10T29/53709; Y10T29/5377; Y10T29/53996; Y10T403/00; Y10T403/49; Y10T403/4991
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
241 words
In a method of making a leakproof joint construction for a pair of members disposed in abutting relation comprising the steps of deforming a substantially rectangular part of one of said members into an adjacent substantially rectangular part of the other of said members so that said parts of said members are disposed completely beyond the plane of the outer surface of said other member while respectively being integrally interconnected to the remainder of said members by substantially straight sided tubular portions of said members, and interlocking said parts together by an outward staking of one pair of opposed sides of said tubular portion of said part of said one member into said tubular portion of said other member by compacting said parts together, the improvement wherein said step of deforming forms said one pair of opposed sides of said one member to each be disposed at an acute angle relative to said plane of said other member and the other pair of opposed sides thereof to each be substantially at a right angle relative to said plane of said other member and said step of staking causes said one pair of opposed sides of said one member to each toggle over center so as to be disposed at an obtuse angle relative to said plane of said other member while said other pair of opposed sides each remain substantially at said right angle to said plane of said other member.
Claim 2
Dependent Claim
241 words
In a method of making a leakproof joint construction for a pair of members disposed in abutting relation comprising the steps of deforming a substantially rectangular part of one of said members into an adjacent substantially rectangular part of the other of said members so that said parts of said members are disposed completely beyond the plane of the outer surface of said other member while respectively being integrally interconnected to the remainder of said members by substantially straight sided tubular portions of said members, and interlocking said parts together by an outward staking of one pair of opposed sides of said tubular portion of said part of said one member into said tubular portion of said other member by compacting said parts together, the improvement wherein said step of deforming forms said one pair of opposed sides of said one member to each be disposed at an acute angle relative to said plane of said other member and the other pair of opposed sides thereof to each be substantially at a right angle relative to said plane of said other member and said step of staking causes said one pair of opposed sides of said one member to each toggle over center so as to be disposed at an obtuse angle relative to said plane of said other member while said other pair of opposed sides each remain substantially at said right angle to said plane of said other member.
Claim 3
Dependent Claim
48 words
A method of making a leakproof joint construction as set forth in claim 1 and including the steps of forming said rectangular configurations to respectively have long and narrow sides, and forming said one pair of opposed sides to define said narrow sides of said rectangular configuration thereof.
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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |