# US 11,305,599 B2 · Leaf spring suspension system for a vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,599 B2 - Document ID: US11305599B2 - Status: Granted - Kind: B2 - Application number: 17/081,870 - Filed: 2020-10-27 - Published: 2021-02-11 - Granted: 2022-04-19 - Earliest claimed: 2015-11-10 - Assignees: Rassini Suspensiones, S.A. De C.V. - Applicants: Rassini Suspensiones, S.A. De C.V. - Inventors: Anthony Berlingieri; Jose G. Delgado; Ramon Heberto Diego Guedea; Robert W. Friedrichs; Chris Galea; Jesus Ernesto Meza; Jose Roberto Frausto Rodriguez; Jose G. Ruiz Juarez; James N. Zeimet - Web page: https://patentgrep.com/patent/US11305599B2 ## CPC - B60G 11/12: Links, pins, or bushes - B60G 11/04: arranged substantially parallel to the longitudinal axis of the vehicle - B60G 11/113: Mountings on the axle (B60G11/107 takes precedence) - F16F 1/26: Attachments or mountings ({F16F1/182, F16F1/22} B60G11/10 take precedence) - F16F 3/023: {composed only of leaf springs} - B60G 9/00: Resilient suspensions of a rigid axle or axle housing for two or more wheels {(the axle being a part of a set of tandem axles B60G5/00-B60G5/065; with leaf springs B60G11/02-B60G11/08)} - B60G 2202/112: longitudinally arranged - B60G 2204/121: Mounting of leaf springs - B60G 2204/41: Elastic mounts, e.g. bushings - B60G 2204/4306: Bracket or knuckle for rigid axles, e.g. for clamping - F16F 2230/0005: Attachment, e.g. to facilitate mounting onto confer adjustability - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract A leaf spring suspension system for a vehicle includes a chassis rail. Also included is a pivot block operatively coupled to the chassis rail and rotatable relative to the chassis rail. Further included is a leaf spring operatively coupled to the pivot block proximate an end of the leaf spring. Yet further included is a half leaf spring operatively coupled to the pivot block proximate a first end of the half leaf spring and operatively coupled to a vehicle axle proximate a second end of the half leaf spring. ## Claims ### Claim 1 A leaf spring suspension system for a vehicle comprising: a chassis rail; a pivot block operatively coupled to the chassis rail and rotatable relative to the chassis rail; a leaf spring operatively coupled to the pivot block proximate an end of the leaf spring; a half leaf spring operatively coupled to the pivot block proximate a first end of the half leaf spring and operatively coupled to a vehicle axle proximate a second end of the half leaf spring; and a hinge assembly operatively coupled to the leaf spring and to the vehicle axle, the hinge assembly rotatable about the vehicle axle during displacement of the leaf spring. ### Claim 2 (depends on 1) The leaf spring suspension system of claim 1, further comprising a bushing operatively coupled to the chassis rail, the bushing providing a bearing surface for the pivot block to rotate about. ### Claim 3 (depends on 1) The leaf spring suspension system of claim 1, wherein the pivot block rotates in response to a braking or acceleration event of the vehicle. ### Claim 4 (depends on 3) The leaf spring suspension system of claim 3, wherein forces from the leaf spring are imparted on the half leaf spring with the pivot block during a braking or acceleration event of the vehicle. ### Claim 5 (depends on 1) The leaf spring suspension system of claim 1, wherein the hinge assembly comprises a revolute joint. ### Claim 6 (depends on 1) The leaf spring suspension system of claim 1, wherein the hinge assembly is operatively coupled to the leaf spring with at least one mechanical fastener. ### Claim 7 (depends on 1) The leaf spring suspension system of claim 1, wherein each of the leaf spring and the half leaf spring is not directly coupled to the chassis rail. ### Claim 8 A leaf spring suspension system for a vehicle comprising: a chassis rail; a bushing directly coupled to the chassis rail in a fixed manner; a pivot block mounted to the bushing and rotatable relative to the bushing; a leaf spring clamped to the pivot block proximate an end of the leaf spring; a half leaf spring clamped to the pivot block proximate a first end of the half leaf spring and operatively coupled to a vehicle axle proximate a second end of the half leaf spring; and wherein each of the leaf spring and the half leaf spring are not directly coupled to the chassis rail. ### Claim 9 (depends on 8) The leaf spring suspension system of claim 8, wherein the pivot block rotates in response to a braking or acceleration event of the vehicle. ### Claim 10 (depends on 9) The leaf spring suspension system of claim 9, wherein forces from the leaf spring are imparted on the half leaf spring with the pivot block during a braking or acceleration event of the vehicle. ### Claim 11 (depends on 8) The leaf spring suspension system of claim 8, further comprising a hinge assembly operatively coupled to the leaf spring and to the vehicle axle, the hinge assembly rotatable about the vehicle axle during displacement of the leaf spring. ### Claim 12 (depends on 11) The leaf spring suspension system of claim 11, wherein the hinge assembly comprises a revolute joint. ### Claim 13 (depends on 11) The leaf spring suspension system of claim 11, wherein the hinge assembly is operatively coupled to the leaf spring with at least one mechanical fastener.