Abstract: In a method for producing a spring leaf (2) for a leaf spring, in particular a parabolic spring or suspension spring, wherein the spring leaf (2) comprises two end regions, a central region, a top side which is subjected to tensile stress in the operative state, and a bottom side (1) which is subjected to pressure in the operative state, at least one hole (3) is introduced into the bottom side (1). The bottom side (1) is peened locally in the region around the hole (3).
Type:
Grant
Filed:
October 16, 2018
Date of Patent:
December 27, 2022
Assignee:
Hendrickson Commercial Vehicle Systems Europe GmbH
Abstract: A spring leaf for a leaf spring (1) has an upper side (13), a lower side (14), two lateral sections extending between the upper side (13) and the lower side (14), a longitudinal axis (15), a section plane (III) extending perpendicularly to the upper side (13) and lower side (14) and through the longitudinal axis (15), two end sections (3a, 3b), and a middle section (4) extending between the end sections (3a, 3b). The middle section (4) has a clamping region (5). A main tension region (6a, 6b) is provided between at least one of the end sections (3a, 3b) and the clamping region (5), the thickness (S) of which decreases in the direction from the clamping region (5) to the end section (3a, 3b), in particular decreases parabolically.
Type:
Grant
Filed:
May 16, 2018
Date of Patent:
December 27, 2022
Assignee:
Hendrickson Commercial Vehicle Systems Europe GmbH
Abstract: A vehicle spring for a spring system, includes a spring body (20) and is produced, in particular rolled, from a profiled bar (1) made of a flat steel bar, in particular spring steel, in a hot deformation process. The profiled bar (1) or the spring body (20) has at least one material recess (6) which is provided over the length of the profiled bar or the spring body at least in some regions. The cross-sectional shape of the profiled bar (1) can be the same over the entire length of the profiled bar, whereas the cross-sectional shape in the spring body (20) can vary over the length of the spring body.
Type:
Grant
Filed:
July 18, 2017
Date of Patent:
January 12, 2021
Assignee:
Hendrickson Commercial Vehicle Systems Europe GmbH
Abstract: A spring, in particular a flat spring (5), for use in connection with a vehicle, has a middle region (6) which has a curve with a first curve direction, as well as two edge regions (7). In an unladen state, the edge regions (7) each have a curve with a second curve direction and vertices (10), with the second direction of curve being opposed to the first direction of curve. The flat spring (5) has a vertex axis (11) running through the vertices (10) of the curves of the edge regions (7). End regions (8) of the edge regions (7) are tilted away from the vertex axis (11) toward the side of the vertex axis (11) on which the middle region (6) lies.
Type:
Application
Filed:
December 4, 2015
Publication date:
December 28, 2017
Applicant:
Hendrickson Commercial Vehicle Systems Europe GmbH
Abstract: A vehicle spring for a spring system, includes a spring body (20) and is produced, in particular rolled, from a profiled bar (1) made of a flat steel bar, in particular spring steel, in a hot deformation process. The profiled bar (1) or the spring body (20) has at least one material recess (6) which is provided over the length of the profiled bar or the spring body at least in some regions. The cross-sectional shape of the profiled bar (1) can be the same over the entire length of the profiled bar, whereas the cross-sectional shape in the spring body (20) can vary over the length of the spring body.
Type:
Grant
Filed:
July 25, 2013
Date of Patent:
August 8, 2017
Assignee:
Hendrickson Commercial Vehicle Systems Europe GmbH