Patent US3829180A successfully refreshed from Google Patents.
US3829180A
Copy Number
Expired / Lapsed
US
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Pad construction for tilting pad thrust bearing
Assignee: Delaware Capital Formation Inc
•
Filing: 1973-04-16
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Granted: 1974-08-13
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Expires: 1993-04-16
Overview & Biblio
Claims (11)
Citations (0)
Maintenance Schedule (3)
Categories & Tags (0)
Abstract
Abstract A tilting pad for a thrust bearing is formed of steel and faced with a layer of graphite-fiber composite material. This provides good bearing properties, a low coefficient of thermal expansion parallel to its surface, and a low coefficient of thermal conductivity transverse to its surface. The facing material insulates the bearing pad from oil-sheer heat and thus increases the load capacity of the pad by reducing the tendency to bend which is customarily caused by a temperature differential across a pad. The facing material is made of criss-crossed layers of graphite fibers embedded in a resin, the fibers being oriented in directions substantially parallel with the surface of the steel pad.
Inventors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:19
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/04; F16C17/06; F16C33/00; F16C33/02; F16C33/04; F16C33/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
16 words
The improvement defined in claim 1 wherein said facing material is a graphite fiber composite material.
Claim 2
Dependent Claim
24 words
The improvement defined in claim 2 wherein the fibers of said graphite fiber composite material are substantially parallel to the face of said pads.
Claim 3
Dependent Claim
20 words
The improvement defined in claim 3 wherein the fibers of said graphite fiber composite material are arranged in criss-crossed layers.
Claim 4
Dependent Claim
19 words
The improvement defined in claim 2 wherein said graphite fiber composite material comprises graphite fibers embedded in a resin.
Claim 5
Dependent Claim
20 words
The improvement defined in claim 5 wherein said resin is chosen from the group comprising epoxy, nylon, teflon, and polyimide.
Claim 6
Dependent Claim
17 words
The improvement defined in claim 4 wherein said criss-crossed layers of graphite fibers are embedded in epoxy.
Claim 7
Dependent Claim
22 words
The improvement defined in claim 1 wherein said facing material is bonded to the face of said pad by an epoxy cement.
Claim 8
Dependent Claim
18 words
The improvement defined in claim 1 wherein said facing material is between 0.01 and 0.1 inches in thickness.
Claim 9
Dependent Claim
13 words
The improvement defined in claim 1 wherein said pads are made of steel.
Claim 10
Dependent Claim
23 words
The improvement defined in claim 1 wherein the facing material includes fibers which are arranged substantially parallel to the face of said pads.
Claim 11
Dependent Claim
18 words
The improvement defined in claim 11 wherein the fibers of said facing material are arranged in criss-crossed layers.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Annuity Stage
Window Opens
Payment Deadline
Surcharge Period Until
Estimated Fee
Status
3.5 Years (Year 4) 1977-08-12
1978-02-11 1978-08-13
$2000.00
Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-12
1982-02-11 1982-08-13
$3760.00
Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-12
1986-02-11 1986-08-13
$7700.00
Window Closed / Lapsed