US4547239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for attaching a fitting to a conduit of a push-pull control
Assignee: Teleflex Inc
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Filing: 1984-07-16
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Granted: 1985-10-15
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Expires: 2004-07-16
Abstract
Abstract A motion-transmitting remote control assembly of the type including a flexible motion-transmitting core element movably supported in a conduit (28) supported by a fitting (12). A helical groove (24 ) is formed in a bore (14) in the fitting (12) and a raised helical ridge (30) extends radially from the conduit (28) and fills the helical groove (24) to provide retention of the conduit (28) within the bore (14) of the fitting (12). An apparatus (10) and method for attaching the fitting (12) to the conduit (28) wherein the fitting (12) is rotatably supported by a mandrel (82) as the conduit (28) is clamped (42) and forced into the bore whereby frictional engagement with the bore (14) of specific configuration causes the material of the conduit (28) to soften and move radially outwardly (30) to fill the helical groove (24).
Inventors
- 👤 John A. Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:01
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/63; B29C65/00; B29C65/02; B29C65/06; B29C65/0672; B29C65/56; B29C65/561; B29C65/565; B29C65/78; B29C65/7802; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/124; B29C66/1246; B29C66/12461; B29C66/20; B29C66/23; B29C66/232; B29C66/32; B29C66/324; B29C66/3242; B29C66/51; B29C66/52; B29C66/522; B29C66/53; B29C66/534; B29C66/5344; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; F; F16; F16C; F16C1/00; F16C1/26; F16C1/262; B29C66/24; B29C66/242; B29C66/2422; B29C66/24223; B29C66/303; B29C66/3032; B29C66/30325
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
151 words
A method for assembling a motion-transmitting remote control assembly of the type having a fitting (12) with a bore (14) extending therethrough with a shoulder (20) separating a large diameter portion (22) having a helical groove (24) therein from a small diameter portion (26) and a conduit (28) attached to the fitting (12) within the large diameter portion (24) of the bore (14) up to the shoulder (20), said method comprising the steps of: establishing relative rotation between the fitting (12) and the conduit (28) about the axis of the bore (14) and establishing relative longitudinal movement between the conduit (28) and the fitting (12) to move the said conduit (28) into the bore (14) to engage the bore (14) and soften the material of the conduit (28) by friction to fill the groove (24) and terminating the relative rotation with the end of the conduit (28) engaging the shoulder (20).
Claim 2
Independent Claim
151 words
A method for assembling a motion-transmitting remote control assembly of the type having a fitting (12) with a bore (14) extending therethrough with a shoulder (20) separating a large diameter portion (22) having a helical groove (24) therein from a small diameter portion (26) and a conduit (28) attached to the fitting (12) within the large diameter portion (24) of the bore (14) up to the shoulder (20), said method comprising the steps of: establishing relative rotation between the fitting (12) and the conduit (28) about the axis of the bore (14) and establishing relative longitudinal movement between the conduit (28) and the fitting (12) to move the said conduit (28) into the bore (14) to engage the bore (14) and soften the material of the conduit (28) by friction to fill the groove (24) and terminating the relative rotation with the end of the conduit (28) engaging the shoulder (20).
Claim 3
Dependent Claim
27 words
A method as set forth in claim 1 further characterized by maintaining the inner diameter of the conduit (28) constant during the softening of the exterior thereof.
Claim 4
Dependent Claim
51 words
A method as set forth in claim 2 further characterized by inserting a mandrel (82) through the small diameter portion (26) of the bore (14) and into the large diameter portion (22) of the bore (14) and driving the conduit (28) onto the mandrel (82) for maintaining the inner diameter thereof.
Claim 5
Dependent Claim
29 words
A method as set forth in claim 3 further characterized by concentrically guiding the end of the conduit (28) into the large diameter portion (22) of the bore (14).
Claim 6
Dependent Claim
68 words
A method as set forth in claim 4 wherein an entry portion (32) of said continuous bore (14) is of generally polygonal cross section and has flat surfaces tangentially engaging the outer surface of the conduit (28) and characterized by providing minimal frictional contact between the outer surface of the conduit (28) and the flat surfaces for the purpose of concentric engagement of said fitting and said conduit.
Claim 7
Independent Claim
110 words
A method for assembling a fitting (12) with a bore (14) extending therethrough and a helical groove (24) therein to a conduit (28) within the bore (14), said method comprising the steps of: establishing relative rotation between the fitting (12) and the conduit (28) about the axis of the bore (14) and establishing relative longitudinal movement between the conduit (28) and the fitting (12) to move the said conduit (28) into the bore (14) to engage the bore (14) and soften the material of the conduit (28) by friction to fill the groove (24) and terminating the relative rotation with the end of the conduit (28) engaging the shoulder (20).
Claim 8
Independent Claim
110 words
A method for assembling a fitting (12) with a bore (14) extending therethrough and a helical groove (24) therein to a conduit (28) within the bore (14), said method comprising the steps of: establishing relative rotation between the fitting (12) and the conduit (28) about the axis of the bore (14) and establishing relative longitudinal movement between the conduit (28) and the fitting (12) to move the said conduit (28) into the bore (14) to engage the bore (14) and soften the material of the conduit (28) by friction to fill the groove (24) and terminating the relative rotation with the end of the conduit (28) engaging the shoulder (20).
Claim 9
Dependent Claim
27 words
A method as set forth in claim 6 wherein a fitting is attached to a conduit and characterized by creating a stress relief in the resultant assembly.
References Cited (Backward Citations)
US2933428A
Cited
US3395591A
Cited
US3434501A
Cited
US3435107A
Cited
US3917497A
Cited
US3994515A
Cited
US4441951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |