US3837688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint construction and method of making the same or the like
Assignee: Robertshaw Controls Co
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Filing: 1973-07-09
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Granted: 1974-09-24
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Expires: 1993-07-09
Abstract
Abstract A first tubular metallic member has a relatively small transverse cross section and has a portion thereof telescopically disposed within a reduced portion of a second tubular metallic member, the reduced portion of the second tubular member having an opening therethrough and leading to a spacing between the telescoped portions. A heated securing means, such as a brazing material or a soldering material, is disposed in the opening and fills at least part of the spacing between the telescoped portions to secure the telescoped portions together whereby the heat affected area of the first tubular member is confined inside the telescoping portion of the second tubular member, causing the heated portion of the first tubular member to retain substantially its original strength.
Inventors
- 👤 H Vollbehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:07
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
214 words
In combination, a first tubular metallic member having a relatively small transverse cross section and opposed terminal ends whereby said first tubular member comprises a capillary tube, a second tubular metallic member having a reduced portion telescopically receiving a portion of said first tubular member therein with a spacing therebetween, said second tubular member comprising a condition sensing bulb, said second tubular member having a portion larger than said reduced portion immediately adjacent said reduced portion thereof, said first tubular member having said terminal ends thereof, respectively, extending beyond said reduced portion whereby one terminal end of said first tubular member is disposed spaced from said reduced portion and inside said larger portion of said second tubular member, said reduced portion of said second tubular member having an opening therethrough and leading to said spacing between said portions, and securing means disposed in said opening and filling at least part of said spacing while securing said portions together in said telescoped relation thereof whereby the spacing of said one terminal end of said first tubular member inside said second tubular member assures that said securing means will not clog said one terminal end thereof and whereby said securing means secures said capillary tube to said condition sensing bulb to complete a joint construction therebetween.
Claim 2
Dependent Claim
214 words
In combination, a first tubular metallic member having a relatively small transverse cross section and opposed terminal ends whereby said first tubular member comprises a capillary tube, a second tubular metallic member having a reduced portion telescopically receiving a portion of said first tubular member therein with a spacing therebetween, said second tubular member comprising a condition sensing bulb, said second tubular member having a portion larger than said reduced portion immediately adjacent said reduced portion thereof, said first tubular member having said terminal ends thereof, respectively, extending beyond said reduced portion whereby one terminal end of said first tubular member is disposed spaced from said reduced portion and inside said larger portion of said second tubular member, said reduced portion of said second tubular member having an opening therethrough and leading to said spacing between said portions, and securing means disposed in said opening and filling at least part of said spacing while securing said portions together in said telescoped relation thereof whereby the spacing of said one terminal end of said first tubular member inside said second tubular member assures that said securing means will not clog said one terminal end thereof and whereby said securing means secures said capillary tube to said condition sensing bulb to complete a joint construction therebetween.
Claim 3
Dependent Claim
54 words
A combination as set forth in claim 1 wherein said securing means comprises a heated material whereby the heat affected area of said portion of said first tubular member is confined inside said reduced portion of said second tubular member causing said portion of said first tubular member to retain substantially its original strength.
Claim 4
Dependent Claim
23 words
A combination as set forth in claim 2 wherein said securing means is selected from the group consisting of brazing and soldering materials.
Claim 5
Dependent Claim
25 words
A combination as set forth in claim 1 wherein said reduced portion of said second tubular member comprises one end of said second tubular member.
Claim 6
Dependent Claim
37 words
A combination as set forth in claim 1 wherein said larger portion of said second tubular portion comprises a closed bulb portion with said one terminal end of said first tubular member disposed in said bulb portion.
Claim 7
Independent Claim
222 words
A method for making a joint construction between a capillary tube and a condition sensing bulb comprising the steps of providing said capillary tube as a first tubular metallic member having a relatively small transverse cross section and terminal ends, providing said bulb as a second tubular metallic member, forming an opening through said second tubular member providing said second tubular member with a large portion and a portion of reduced size relative thereto, telescoping a portion of said first tubular member within said reduced portion of said second tubular member in such a manner that said opening leads to a spacing between said telescoped portions and one terminal end of said first tubular member is disposed spaced from said reduced portions of said second tubular member and is disposed inside said large portion of said second tubular member that is immediately adjacent said reduced portion thereof, and disposing securing means in said opening to fill at least part of said spacing while securing said portions together in said telescoped relation thereof whereby the spacing of said one end of said first tubular member inside said second tubular member assures that said securing means will not clog said one terminal end thereof and whereby said securing means secures said capillary tube to said condition sensing bulb to complete said jOint construction therebetween.
Claim 8
Independent Claim
222 words
A method for making a joint construction between a capillary tube and a condition sensing bulb comprising the steps of providing said capillary tube as a first tubular metallic member having a relatively small transverse cross section and terminal ends, providing said bulb as a second tubular metallic member, forming an opening through said second tubular member providing said second tubular member with a large portion and a portion of reduced size relative thereto, telescoping a portion of said first tubular member within said reduced portion of said second tubular member in such a manner that said opening leads to a spacing between said telescoped portions and one terminal end of said first tubular member is disposed spaced from said reduced portions of said second tubular member and is disposed inside said large portion of said second tubular member that is immediately adjacent said reduced portion thereof, and disposing securing means in said opening to fill at least part of said spacing while securing said portions together in said telescoped relation thereof whereby the spacing of said one end of said first tubular member inside said second tubular member assures that said securing means will not clog said one terminal end thereof and whereby said securing means secures said capillary tube to said condition sensing bulb to complete said jOint construction therebetween.
Claim 9
Dependent Claim
54 words
A method as set forth in claim 6 wherein said securing means comprises a heated material whereby the heat affected area of said portion of said first tubular member is confied inside said reduced portion of said second tubular member causing said portion of said first tubular member to retain substantially its original strength.
Claim 10
Dependent Claim
26 words
A method as set forth in claim 7 and including the step of selecting said securing means from the group consisting of brazing and soldering materials.
Claim 11
Dependent Claim
31 words
A method as set forth in claim 6 and including the step of forming said reduced portion of said second tubular member by reducing a portion of said second tubular member.
Claim 12
Dependent Claim
33 words
A method as set forth in claim 9 wherein said step of forming said reduced portion of said second tubular member comprises the step of reducing one end of said second tubular member.
Claim 13
Dependent Claim
29 words
A method as set forth in claim 10 and including the step of forming said portion of said first tubular member from one end of said first tubular member.
Claim 14
Dependent Claim
42 words
A method as set forth in claim 6 and including the step of forming said larger portion of said second tubular member into a closed bulb portion whereby said one end of said first tubular member is disposed in said bulb portion.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |