US3643522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction bearing liner fabrication
Assignee: Menasco Aerospace Ltd
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Filing: 1970-08-31
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Granted: 1972-02-22
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Expires: 1990-08-31
Abstract
Abstract A low friction nut liner for lining the interior of the nut member of a jackscrew type actuating mechanism. The nut liner is cut longitudinally into three arcuate segments, one segment being cut along two parallel planes. The three segments are bonded at the interior of the nut member with an epoxy adhesive which contains aluminum particles for improved heat transfer from the liner to the nut member. The liner is mounted in the nut member by inserting each segment, in turn, axially into the nut member and then moving it radially outwardly against the inner wall of the nut member. The segment having parallel cuts is inserted last by similarly moving it axially into the nut member and then moving it parallel to its cuts into the remaining gap.
Inventors
- 👤 John Peter Fullam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:07
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; B; B64; B64C; B64C9/00; B64C9/02; F16H25/00; F16H25/18; F16H25/20; F16H25/24; F16H2025/249; F16H25/22; F16H25/2204; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18744; Y10T74/19; Y10T74/19991
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
59 words
A liner for lining the interior of a bearing member of engaged bearing and shaft members, the liner comprising: at least three mating, arcuate segments, each segment havIng terminal edge surfaces interfacing with terminal edge surfaces of two other segments, the interfacing surfaces at the terminal edges of at least one segment being substantially perpendicular to a common plane.
Claim 2
Dependent Claim
59 words
A liner for lining the interior of a bearing member of engaged bearing and shaft members, the liner comprising: at least three mating, arcuate segments, each segment havIng terminal edge surfaces interfacing with terminal edge surfaces of two other segments, the interfacing surfaces at the terminal edges of at least one segment being substantially perpendicular to a common plane.
Claim 3
Dependent Claim
79 words
said bearing member is a nut member threadedly engaged to the screw member and linked to the second body, the nut member comprising: a. an outer shell; and b. said liner seated in said outer shell, having interior threads cooperating with the threads of the screw member and attached by a suitable bonding agent to the interior of the outer shell; wherein rotation of one member relative to the other moves one of said bodies relative to the other.
Claim 4
Dependent Claim
79 words
said bearing member is a nut member threadedly engaged to the screw member and linked to the second body, the nut member comprising: a. an outer shell; and b. said liner seated in said outer shell, having interior threads cooperating with the threads of the screw member and attached by a suitable bonding agent to the interior of the outer shell; wherein rotation of one member relative to the other moves one of said bodies relative to the other.
Claim 5
Dependent Claim
25 words
A liner according to claim 1, wherein the interfacing surfaces at the terminal edges of said one section are planar and parallel to each other.
Claim 6
Dependent Claim
27 words
A liner according to claim 2, wherein the interfacing surfaces at the terminal edges of said one section are parallel to the central axis of the liner.
Claim 7
Dependent Claim
30 words
A liner according to claim 3, wherein the planes of the interfacing surfaces at the terminal edges of said one section are equidistant from the central axis of the liner.
Claim 8
Dependent Claim
24 words
A liner according to claim 4, wherein the liner has three segments divided by three parallel, substantially equally spaced, interfacing pairs of edge surfaces.
Claim 9
Dependent Claim
28 words
A screw-type actuator having a bearing member, a shaft member and a liner according to claim 1, for moving a first body relative to a second body, wherein:
Claim 10
Dependent Claim
32 words
An actuator according to claim 6, wherein the interior of the outer shell and the exterior of the liner have mating threaded surfaces which substantially parallel the internal threads of the liner.
Claim 11
Dependent Claim
16 words
An actuator according to claim 6, wherein the bonding agent has heat conductor particles mixed therein.
Claim 12
Dependent Claim
17 words
An actuator according to claim 8, wherein the bonding agent comprises an epoxy adhesive having aluminum therein.
Claim 13
Independent Claim
178 words
A method for fabricating and mounting a conforming liner in the interior walls of a curved-wall cavity formed in a body so that the exterior wall of the liner is adhered to the wall of the cavity, the method comprising the steps of: a. forming the liner into a plurality of segments including at least one arcuate segment formed by a pair of dividing cuts perpendicular to a common plane; b. coating at least one of the coadhering surfaces with a suitable adhesive; c. positioning all the segments except said one segment on the cavity wall in matingly adjoining relationship leaving a gap having said perpendicular cuts at opposite sides for receiving said one segment, said segments being positioned by an initial approximately axial insertion of each segment into the cavity followed by an approximately radial movement to the cavity wall; and d. positioning said one segment in the gap by initially inserting it approximately axially into the cavity and then moving it approximately parallel to said pair of cuts into the gap and against the cavity wall.
Claim 14
Independent Claim
178 words
A method for fabricating and mounting a conforming liner in the interior walls of a curved-wall cavity formed in a body so that the exterior wall of the liner is adhered to the wall of the cavity, the method comprising the steps of: a. forming the liner into a plurality of segments including at least one arcuate segment formed by a pair of dividing cuts perpendicular to a common plane; b. coating at least one of the coadhering surfaces with a suitable adhesive; c. positioning all the segments except said one segment on the cavity wall in matingly adjoining relationship leaving a gap having said perpendicular cuts at opposite sides for receiving said one segment, said segments being positioned by an initial approximately axial insertion of each segment into the cavity followed by an approximately radial movement to the cavity wall; and d. positioning said one segment in the gap by initially inserting it approximately axially into the cavity and then moving it approximately parallel to said pair of cuts into the gap and against the cavity wall.
Claim 15
Dependent Claim
26 words
A method according to claim 10, wherein an expandable mandrel is inserted into the assembled liner and expanded to clamp the liner against the cavity walls.
Claim 16
Dependent Claim
69 words
A method according to claim 11, for inserting a liner in an outer shell to fabricate a nut member for a screw type actuator, wherein prior to cutting a liner into segments mating threads are formed on the interior of the liner and on the interior of the outer shell and similar threads are formed on the interior of the liner for threadedly engaging the screw of said actuator.
Claim 17
Dependent Claim
47 words
A liner according to claim 1 wherein said liner is bonded to the bearing member by an adhesive composition for bonding two surfaces and for providing improved heat transfer between the surfaces, the composition comprising: a. an adhesive; and b. heat conductor particles dispersed in said adhesive.
Claim 18
Dependent Claim
12 words
A composition according to claim 13 wherein said particles are metallic particles.
Claim 19
Dependent Claim
11 words
A composition according to claim 14 wherein the particles include aluminum.
Claim 20
Dependent Claim
11 words
A composition according to claim 14 wherein the particles include copper.
References Cited (Backward Citations)
US2441580A
Cited
US3081644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |