US3580532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trunnion mounting
Assignee: Lord Corp
•
Filing: 1970-03-02
•
Granted: 1971-05-25
•
Expires: 1990-03-02
Abstract
Abstract The service life of bonded elastomer trunnion mountings is improved by tapered annular grooves in the outer surfaces of the elastomer adjacent the split metal ring by which the mounting is seated in the trunnion support.
Inventors
- 👤 Regis V Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
F; F16; F16C; F16C27/00; F16C27/06; F16C27/063
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
206 words
A mounting comprising a housing having segmental parts secured together and having arcuate grooves arranged end to end and cooperating to provide an annular recess facing radially inward, a trunnion having an outer surface opposed to and spaced radially inward from said annular recess, a metal ring having segmental metal parts arranged end to end and seated in said recess, an annular body of elastomer comprising segments bonded to said metal parts, said body having an inside diameter less than the outside diameter of the trunnion whereby the elastomer is placed under radial compression between the trunnion and the metal parts, said elastomer at least in the region subjected to maximum load having annular grooves at opposite ends of the elastomer adjacent said metal parts with the apexes of the grooves spaced axially from each other and radially inward from the ends of the elastomer and with the side of the grooves diverging axially outward toward the ends of the elastomer at an acute angle whereby said radial compression of the elastomer causes the sides of the grooves to close at the apexes of the grooves and axially outward therefrom so as to protect the elastomer and said metal ring between the apexes of the grooves.
Claim 2
Dependent Claim
206 words
A mounting comprising a housing having segmental parts secured together and having arcuate grooves arranged end to end and cooperating to provide an annular recess facing radially inward, a trunnion having an outer surface opposed to and spaced radially inward from said annular recess, a metal ring having segmental metal parts arranged end to end and seated in said recess, an annular body of elastomer comprising segments bonded to said metal parts, said body having an inside diameter less than the outside diameter of the trunnion whereby the elastomer is placed under radial compression between the trunnion and the metal parts, said elastomer at least in the region subjected to maximum load having annular grooves at opposite ends of the elastomer adjacent said metal parts with the apexes of the grooves spaced axially from each other and radially inward from the ends of the elastomer and with the side of the grooves diverging axially outward toward the ends of the elastomer at an acute angle whereby said radial compression of the elastomer causes the sides of the grooves to close at the apexes of the grooves and axially outward therefrom so as to protect the elastomer and said metal ring between the apexes of the grooves.
Claim 3
Dependent Claim
21 words
The mounting of claim 1 in which the metal parts are bonded to a skin of elastomer merging into said body.
Claim 4
Dependent Claim
38 words
The mounting of claim 1 in which the inner sides of the grooves in the elastomer diverge from the outer sides of the grooves at an acute angle which increases axially outward from the apexes of the grooves.
Claim 5
Dependent Claim
19 words
The mounting of claim 1 in which the body has end faces which are convex in radial cross section.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |