Patent US3770231A successfully refreshed from Google Patents.
US3770231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine mount with thrust limiting and damping means
Assignee: Caterpillar Inc
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Filing: 1972-06-02
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Granted: 1973-11-06
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Expires: 1992-06-02
Abstract
Abstract A bushing assembly employed in an engine mount comprises a cupshaped housing, an inner sleeve having a engine support trunnion mounted therein and an annular elastomeric bushing interposed between the housing and sleeve. An elastomeric pad is interposed between an end wall of the housing and an end of the trunnion to substantially absorb impact loads imposed thereon by the trunnion.
Inventors
- 👤 E Kirchgessner
- 👤 N Jones
- 👤 R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:21
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/38; F16F1/3807; F16F1/3814; B; B60; B60K; B60K5/00; B60K5/12; B60K5/1291
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
In an engine mount comprising a bushing assembly mounted between an engine and a support trunnion secured to a vehicle frame, the invention wherein said bushing assembly comprises a cup-shaped housing having an end wall spaced axially inwardly from an adjacent wall of said engine, a cylindrical sleeve mounted on said trunnion, an annular elastomeric bushing compressed between a cylindrical sidewall of said housing and said sleeve and combined thrust limiting damping means, including elastomeric pad means abutting said end wall, positioned closely adjacent to an end of said support trunnion to define a small axial clearance therebetween which is less than the axial shear limit of said elastomeric bushing for limiting the axial displacement of said support and for substantially absorbing impact loads imposed thereon solely by axial engagement with the end of said support trunnion.
Claim 2
Dependent Claim
137 words
In an engine mount comprising a bushing assembly mounted between an engine and a support trunnion secured to a vehicle frame, the invention wherein said bushing assembly comprises a cup-shaped housing having an end wall spaced axially inwardly from an adjacent wall of said engine, a cylindrical sleeve mounted on said trunnion, an annular elastomeric bushing compressed between a cylindrical sidewall of said housing and said sleeve and combined thrust limiting damping means, including elastomeric pad means abutting said end wall, positioned closely adjacent to an end of said support trunnion to define a small axial clearance therebetween which is less than the axial shear limit of said elastomeric bushing for limiting the axial displacement of said support and for substantially absorbing impact loads imposed thereon solely by axial engagement with the end of said support trunnion.
Claim 3
Dependent Claim
19 words
The invention of claim 1 wherein said end wall is integrally formed with the cylindrical wall of said housing.
Claim 4
Dependent Claim
23 words
The invention of claim 1 wherein said end wall is detachably secured to the cylindrical wall of said housing by annular flange means.
Claim 5
Dependent Claim
27 words
The invention of claim 1 wherein said combined thrust limiting and damping means further comprises a protective member mounted between said elastomeric pad and said support trunnion.
Claim 6
Dependent Claim
37 words
The invention of claim 4 wherein said protective member comprises a rigid disc interposed between said pad means and said trunnion in substantial parallel relationship with said end wall to protect said pad means against impact damage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |