US3711166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling the coefficient of friction between bearing surfaces
Assignee: QUAMCO Inc A DE CORP
•
Filing: 1971-03-03
•
Granted: 1973-01-16
•
Expires: 1991-03-03
Abstract
Abstract A self-lubricated pressure plate or journal for use in supporting relatively slowly moving heavy loads of the type imposed, for example, by long structural members such as beams which expand and contract under temperature changes. A fabricated sheet made of material which has the inherent capability of lowering the coefficient of friction as the pressure thereagainst is increased, rests against a first plate of novel surface configuration whereby the sheet, when under pressure by a smooth second plate, will provide a suitable sliding surface for the second plate and will be effectively secured without bonding against sliding movement with respect to the first plate. The first plate has raised or depressed areas of controlled size against which the load acting through the fabricated sheet principally bears resulting in a controlled and lower coefficient of friction at these bearing areas.
Inventors
- 👤 A Wayson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:11
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; E; E01; E01D; E01D19/00; E01D19/04; E04; E04B; E04B1/00; E04B1/36; F16C29/00; F16C29/02; F16C33/28; G; G21; G21C; G21C13/00; G21C13/02; G21C13/024; F16C2350/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
191 words
Means for supporting a load in a manner in which the load may move with relatively low frictional resistance, said means comprising a first plate having raised portions providing raised areas and lower portions providing lower areas adjacent said raised areas, a fabricated sheet of ''''TEFLON'''' TFE fibers or the like resting on one of the said areas of said first plate whereby when a load is applied to said sheet by a second plate having a smooth surface, said load will be supported substantially entirely by the said one areas of said first plate against which the said sheet initially rested and by the compressed areas of said sheet thereagainst, said load supporting areas lying in a common plane and comprising a much smaller percent of the total area of said first plate than the percent of the load supported by said supporting compressed areas, and said sheet will be anchored against lateral movement on said first plate by coaction of said raised portions and those parts of said sheet that are below the level of said raised areas at said lower areas after the said load has been applied.
Claim 2
Dependent Claim
191 words
Means for supporting a load in a manner in which the load may move with relatively low frictional resistance, said means comprising a first plate having raised portions providing raised areas and lower portions providing lower areas adjacent said raised areas, a fabricated sheet of ''''TEFLON'''' TFE fibers or the like resting on one of the said areas of said first plate whereby when a load is applied to said sheet by a second plate having a smooth surface, said load will be supported substantially entirely by the said one areas of said first plate against which the said sheet initially rested and by the compressed areas of said sheet thereagainst, said load supporting areas lying in a common plane and comprising a much smaller percent of the total area of said first plate than the percent of the load supported by said supporting compressed areas, and said sheet will be anchored against lateral movement on said first plate by coaction of said raised portions and those parts of said sheet that are below the level of said raised areas at said lower areas after the said load has been applied.
Claim 3
Dependent Claim
37 words
Means as set forth in claim 1, said fabricated sheet being sufficiently porous at the uncompressed areas to be able to receive and hold a lubricant for transfer to the surface of said load plate engaged thereby.
Claim 4
Dependent Claim
40 words
Means as set forth in claim 1 in which said sheet is imperforate and said raised portions are in the form of short posts having end surfaces which comprise said raised areas and which support said load through said sheet.
Claim 5
Dependent Claim
31 words
Means as set forth in claim 1 in which said raised portions are in the form of a plurality of ribs extending crosswise of the direction of movement of said load.
Claim 6
Dependent Claim
37 words
Means as set forth in claim 1 in which said sheet is imperforate and said raised portions are continuous and comprise the raised areas which support said load through said sheet and said lower areas are discontinuous.
Claim 7
Dependent Claim
59 words
Means as set forth in claim 1 said fabricating sheet having a plurality of openings therein matching the pattern of said raised portions so that said raised portions are positioned in said openings, that part of the total area of said first plate bearing the load through said compressed sheet being the said lower areas adjacent said raised portions.
Claim 8
Dependent Claim
58 words
Means as set forth in claim 1 in which said sheet is imperforate and said raised portions are in the form of short posts whose end surfaces are of substantially the same surface area and which comprise said raised areas which support said load through said sheet, said posts spaced according to a pattern on said first plate.
Claim 9
Dependent Claim
21 words
Means as set forth in claim 1, said first and second plates and said sheet between said plates being substantially hemispherical.
Claim 10
Dependent Claim
184 words
Means for supporting a load in a manner in which the loAd may move with relatively low frictional resistance, said means comprising a first plate having raised portions providing raised areas and lower portions providing lower areas adjacent said raised areas, a fabricated sheet of ''''TELFON'''' TFE fibers or the like resting on said raised areas of said first plate whereby when a load is applied to said sheet by a load plate having a smooth surface, said load will be supported substantially entirely by said raised areas against which the said sheet initially rested and by the compressed areas of said sheet thereagainst, said load supporting areas lying in a common plane and comprising a much smaller percent of the total area of said first plate than the percent of the load supported by said supporting compressed areas, and said sheet will be anchored against lateral movement on said first plate by the co-action of said raised portions and those parts of said sheet extending below the level of said raised portions at said lower areas after the said load has been applied.
Claim 11
Dependent Claim
184 words
Means for supporting a load in a manner in which the loAd may move with relatively low frictional resistance, said means comprising a first plate having raised portions providing raised areas and lower portions providing lower areas adjacent said raised areas, a fabricated sheet of ''''TELFON'''' TFE fibers or the like resting on said raised areas of said first plate whereby when a load is applied to said sheet by a load plate having a smooth surface, said load will be supported substantially entirely by said raised areas against which the said sheet initially rested and by the compressed areas of said sheet thereagainst, said load supporting areas lying in a common plane and comprising a much smaller percent of the total area of said first plate than the percent of the load supported by said supporting compressed areas, and said sheet will be anchored against lateral movement on said first plate by the co-action of said raised portions and those parts of said sheet extending below the level of said raised portions at said lower areas after the said load has been applied.
Claim 12
Dependent Claim
37 words
Means as set forth in claim 9, said fabricated sheet being sufficiently porous at the uncompressed areas to be able to receive and hold a lubricant for transfer to the surface of said load plate engaged thereby.
Claim 13
Dependent Claim
40 words
Means as set forth in claim 9 in which said sheet is imperforate and said raised portions are in the form of short posts having end surfaces which comprise said raised areas and which support said load through said sheet.
Claim 14
Dependent Claim
54 words
Means as set forth in claim 9 in which said sheet is imperforate and said raised areas are in the form of short posts of substantially the same surface area and which comprise said raised areas which support said load through said sheet, said posts spaced according to a pattern over said base plate.
Claim 15
Dependent Claim
37 words
Means as set forth in claim 9 in which said sheet is imperforate and said raised portions are in the form of a plurality of ribs extending cross-wise of the direction of said movement of said load.
Claim 16
Dependent Claim
24 words
Means as set forth in claim 9, said first plate and said load plate and the said sheet between said plates being substantially hemispherical.
Claim 17
Dependent Claim
140 words
Means for supporting a load in a manner in which the load may move with relatively low frictional resistance, said means comprising a first plate having a plurality of posts of substantially uniform height providing raised areas on their upper ends with lower areas therebetween, said raised areas lying in a common plane, a fabricated sheet of ''''TEFLON'''' TFE fibers or the like resting on said posts whereby when a load is applied to said sheet by a load plate having a smooth surface, said load acting through said sheet will be supported on the raised areas of said posts thereby to produce localized compressed areas in said sheet between said raised areas and said load plate and said sheet will be anchored against lateral movement on said first plate by the partial entry of said posts into said sheet.
Claim 18
Dependent Claim
140 words
Means for supporting a load in a manner in which the load may move with relatively low frictional resistance, said means comprising a first plate having a plurality of posts of substantially uniform height providing raised areas on their upper ends with lower areas therebetween, said raised areas lying in a common plane, a fabricated sheet of ''''TEFLON'''' TFE fibers or the like resting on said posts whereby when a load is applied to said sheet by a load plate having a smooth surface, said load acting through said sheet will be supported on the raised areas of said posts thereby to produce localized compressed areas in said sheet between said raised areas and said load plate and said sheet will be anchored against lateral movement on said first plate by the partial entry of said posts into said sheet.
Claim 19
Dependent Claim
36 words
Means as set forth in claim 15, said fabricated sheet being sufficiently porous at the uncompressed areas to be able to receive and hold a lubricant for transfer to the surface of said plate engaged thereby.
Claim 20
Dependent Claim
43 words
Means as set forth in claim 16, the height of said posts being such that when said sheet is compressed by said load against said posts, said sheet will also engage said lower areas but with less pressure than that against said posts.
Claim 21
Dependent Claim
32 words
Means as set forth in claim 15 in which said posts are of relatively large horizontal dimensions in relation to their height and the sheet engaging surfaces of said posts are non-planar.
Claim 22
Dependent Claim
26 words
Means as set forth in claim 15 in which said sheet is imperforate and said posts are spaced according to a pattern over said first plate.
Claim 23
Dependent Claim
24 words
Means as set forth in claim 15, said first plate and said load plate and the said sheet between said plates being substantially hemispherical.
Claim 24
Dependent Claim
145 words
Means for supporting a load in a manner in which the load may move with relatively low frictional resistance, said means comPrising a first plate having a continuous raised plane area broken by a plurality of holes which define lower areas and spaces thereabove arranged according to a predetermined pattern, a fabricated sheet of ''''TEFLON'''' TFE fibers or the like resting against said raised area whereby, when a load is applied to said sheet by a load plate having a smooth surface, said load acting through said sheet will be supported by said raised area and there will be produced a compressed area in said sheet corresponding to said raised area and said sheet will be anchored against lateral movement on said first plate by the location of at least some of the thickness of said sheet in the said spaces above said lower areas.
Claim 25
Dependent Claim
145 words
Means for supporting a load in a manner in which the load may move with relatively low frictional resistance, said means comPrising a first plate having a continuous raised plane area broken by a plurality of holes which define lower areas and spaces thereabove arranged according to a predetermined pattern, a fabricated sheet of ''''TEFLON'''' TFE fibers or the like resting against said raised area whereby, when a load is applied to said sheet by a load plate having a smooth surface, said load acting through said sheet will be supported by said raised area and there will be produced a compressed area in said sheet corresponding to said raised area and said sheet will be anchored against lateral movement on said first plate by the location of at least some of the thickness of said sheet in the said spaces above said lower areas.
Claim 26
Dependent Claim
40 words
Means as set forth in claim 21, said fabricated sheet being sufficiently porous at the uncompressed areas above said holes to be able to receive and hold a lubricant for transfer to the surface of said load plate engaged thereby.
Claim 27
Dependent Claim
31 words
Means as set forth in claim 21 in which said sheet has been preformed to have downwardly extending dimples located on said sheet at positions to be received in said holes.
Claim 28
Dependent Claim
28 words
Means as set forth in claim 23 in which the upper concave surface of said dimples will be below the plane of the surface of said raised area.
Claim 29
Dependent Claim
103 words
A sliding bearing for heavy loads comprising an upper load plate with a flat smooth under surface, an intermediate layer in the form of a fabricated sheet of ''''TEFLON'''' TFE fibers or the like, and a bottom base plate engaging and supporting the intermediate layer from below, said bottom base plate comprised of short closely spaced posts with flat upper surfaces relatively large in relation to the post height, said posts arranged according to a pattern, the upper surfaces of said posts constituting the sole supporting areas for said intermediate layer, said posts acting to secure the said intermediate layer against lateral movement.
Claim 30
Dependent Claim
103 words
A sliding bearing for heavy loads comprising an upper load plate with a flat smooth under surface, an intermediate layer in the form of a fabricated sheet of ''''TEFLON'''' TFE fibers or the like, and a bottom base plate engaging and supporting the intermediate layer from below, said bottom base plate comprised of short closely spaced posts with flat upper surfaces relatively large in relation to the post height, said posts arranged according to a pattern, the upper surfaces of said posts constituting the sole supporting areas for said intermediate layer, said posts acting to secure the said intermediate layer against lateral movement.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |