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US 4,464,950 AGranted
Mechanical control by cable sliding axially in a flexible sheath
AssigneeSociete Anonyme D.B.A.
InventorJean Deligny
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AssigneeSociete Anonyme D.B.A.
InventorJean Deligny
Estimating the term…
The invention relates to a mechanical control by cable (10) sliding axially in a flexible sheath (12), equipped with an automatic adjustment device (40) for varying the length of the sheath as a function of the clearances appearing in the control, and of which one end (28) is connected to a receiving member (30) provided with elastic return means (36). According to the invention, the adjustment device (40) includes two telescopic sheath extensions (43,44) inserted between two consecutive portions (41,42) of the sheath to which they are fixed, a wedge-action locking member (62) disposed between the two sheath extensions (43,44) to interlock the latter by wedging during actuation of the mechanical control, and a control member (80) fixed to the locking member (62) and connected to the cable (10) by means of a friction connection (84,11), the control member (80) being entrained, during actuation of the control, in axial translation by the cable (10) in the direction corresponding to wedging of the locking member until the sheath extensions (43,44) are interlocked, the control member being entrained in axial translation by the cable in the direction corresponding to unlocking when the return force applied to the cable becomes less than a predetermined value.
Mechanical control for a cable sliding axially in a flexible sheath, equipped with an automatic adjustment device for varying the length of the sheath in response to clearances appearing in the control, one end of the cable being connected to a receiving member provided with elastic return means to impart a return force to the cable, said adjustment device including two telescopic sheath extensions inserted between two consecutive portions of the sheath to which they are fixed, said adjustment device comprising a wedge-action locking member disposed between the two telescopic sheath extensions to interlock the latter by wedging during actuation of the mechanical control, characterized in that said mechanical control comprises a control member fixed to the locking member and connected to the cable by means of a friction connection, said control member being movable directly by the cable in the direction corresponding to wedging of the locking member in order to actuate the locking member and interlock the two telescopic sheath extensions, said control member being movable directly by the cable in the direction corresponding to unlocking when the return force applied to the cable becomes less than a predetermined value and the two telescopic sheath extensions are unlocked.
A cable mechanical control including a continuous cable length slidingly extending in a flexible sheath means and an automatic adjustment device for varying the overall length of said sheath for taking-up play appearing in said control, said cable having one end connectable to a receiving member to be actuated provided with resilient return means, and its other end connectable to an actuating member for actuation of said cable in the direction opposite said return means, said sheath means comprising consecutive separate flexible sheath portions each prolongated by a tubular extension member intermediate the length of said cable, a releasable coupling device interposed between and cooperating selectively with said extension members for mutually coupling said extensions members during actuation of said control, and a, control member coupling directly said releasable coupling device to said cable for displacement in unison in both directions when no resisting force exceeding a determined value is opposed to displacement of said control member relative to said cable.
A cable mechanical control including a continuous cable length extending in a flexible sheath having consecutive separate flexible sheath portions each prolongated by a tubular extension member, each of said extension members being mutually telescopically arranged, a normally released releasable coupling device interposed between and cooperating selectively with said extension members, and a control member connected to said coupling device and frictionally engaging said cable to be driven therewith so as to actuate said coupling device for interlocking said extension members when said control is actuated.
Mechanical control according to clam 9, characterized in that said sheath extension members are formed by two rigid pieces of tubular shape received telescopically one inside the other and between which is received said releasable coupling device.
Dependencies are inferred from the claim text.