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US 5,397,271 AGranted
Articulated transmission joint of the slidable type
AssigneeGKN Automotive AG
InventorBernard Poulin
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AssigneeGKN Automotive AG
InventorBernard Poulin
Estimating the term…
Articulated transmission joint (10) of the slidable type comprising a transmission joint body (12) and a tripod element (14) having three radial arms (16) each of which arms is slidable between two planar surface portions (36) through the medium of two articulation elements (18) which are pivotally mounted on a spherical trunnion (21) of the tripod element (14), each articulation element (18) defining a planar surface (20) which is cooperative with one of the planar surface portions (36). The joint body (12) comprises three bearing ways each comprising two tracks (38) each of which tracks is constituted by a member defining a planar surface portion (36) and a convex cylindrical surface portion (40) which is cooperative with a complementary concave cylindrical bearing surface (42) formed in the joint body (12).
Articulated transmission joint of the slidable type comprising in combination:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
No related US applications are recorded in the indexed filing history.
The pins extending radially outwardly from the coupling part: having three pins, i.e. true tripod joints
One coupling part having radially projecting pins, e.g. tripod joints: with linear rolling bearings between raceway and trunnion mounted shoes
Homokinetic coupling: torque transmitted via radially extending pin
Couplings for transmitting rotation
Term ended 23 Jul 2013 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to an articulated transmission joint of the slidable type, in particular for an automobile vehicle.
The invention more particularly relates to a homokinetic transmission joint of the type comprising a transmission joint body, also termed barrel, and a tripod element having three radial arms evenly spaced apart around the axis of the tripod element, each arm carrying an articulation element of the transmission joint which is cooperative with an associated bearing way formed in the transmission joint body.
The document FR-A-2,506,872 discloses a homokinetic joint of this type in which each radial arm of the tripod element is slidable between two opposed planar surface portions of the joint body through the medium of two opposed articulation elements which are pivotally mounted on a spherical trunnion formed on the arm of the tripod element, each one of which has a planar surface which is cooperative with one of said planar surface portions of the transmission joint body.
Further features and advantages of the invention will be apparent from the following detailed description with reference to the accompanying drawing in which:
FIG. 1 is a cross-sectional view in a plane containing the axes of the arms of the tripod element of a homokinetic transmission joint constructed in accordance with the teaching of the invention, and
FIG. 2 is a sectional view taken on line 2--2 of FIG. 1.
The transmission joint 10 illustrated in FIGS. 1 and 2 comprises a transmission joint body 12, also termed a barrel, which may be for example connected to a driving element of an automobile vehicle transmission.
The transmission joint 10 further comprises a tripod element 14 having three radial arms 16 evenly spaced 120.degree. apart about the axis of rotation X--X of the tripod element.
The tripod element 14 may for example be connected to a driven element of the transmission of the vehicle. Each of the arms 16 is constructed in the shape of a spherical trunnion the centre C of which is located on the axis Y--Y of the radial arm of the tripod element which is concurrent with and perpendicular to the axis of rotation X--X of the tripod element 14.