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US 2026/0235161 A1Published application
Torsional Equilibrium Suspension Bushing
AssigneePullman Incorporated
InventorJoseph F. CERRI, III
Life of this patent
Estimating the term…
Abstract
An elastomeric bushing comprises a first bushing subassembly and a second bushing subassembly positioned within an outer tube. A first inner sleeve of the first bushing subassembly includes castellations biasedly engaged with castellations of a second inner sleeve of the second bushing subassembly. The castellations are biasedly engaged with one another in a torsional direction.
Claims17
An elastomeric bushing comprising:
- an outer tube;
- a first bushing subassembly positioned within the outer tube and including a first inner sleeve, a first elastomeric bumper disposed around and directly engaging the first inner sleeve, and a first outer sleeve disposed around the first inner sleeve and the first elastomeric bumper;
- and
- a second bushing subassembly positioned within the outer tube and including a second inner sleeve, a second elastomeric bumper disposed around and directly engaging the second inner sleeve, and a second outer sleeve disposed around the second inner sleeve and the second elastomeric bumper, wherein the first inner sleeve and the second inner sleeve each include circumferentially spaced apart castellations biasedly engaged with one another in a torsional direction.
1 more element
A method of manufacturing an elastomeric bushing, comprising:
- aligning castellations of a first inner sleeve of a first bushing subassembly with castellations of a second inner sleeve of a second bushing subassembly;
- axially translating and press fitting a first outer sleeve of the first bushing subassembly and a second outer sleeve of the second bushing subassembly within an outer tube;
- engaging the castellations of the first bushing subassembly with the castellations of the second bushing subassembly before completion of the axially translating of the first and second outer sleeves;
- continuing to axially translate the first and second outer sleeves to elastically deform a first elastomeric bumper of the first bushing subassembly and elastically deform a second elastomeric bumper of the second bushing subassembly to bias the first inner sleeve and the second inner sleeve toward one another;
- rotating the first inner sleeve and the second inner sleeve relative to each other to torsionally deform the first and second elastomeric bumpers and misalign the castellations;
- and
- positioning the first and second inner sleeves relative to one another such that the castellations of the first bushing subassembly interdigitate with and torsionally load against the castellations of the second bushing assembly.
4 more elements
Dependencies are inferred from the claim text.