US3705455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable roller surface for conveyor and application techniques therefor
Assignee: Martin Engineering Co
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Filing: 1971-01-28
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Granted: 1972-12-12
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Expires: 1991-01-28
Abstract
Abstract A resilient tubular sleeve of elastomeric material provided with a plurality of longitudinally-extending circumferentially-spaced cavities inwardly thereof to provide a replaceable surface for a conveyor roller. The cavities provide an intermittent series of compressible wall sections on the sleeve for engagement with and displacement by a conveyor belt in response to axial rotation of the roller to provide a seal cleaning roller surface. The tubular sleeve has a smaller internal diameter, in its unstressed condition, than the diameter of the roller on which it is mounted. The tubular sleeve is mounted on the roller by expanding its internal diameter sufficiently to permit it to slide axially along the roller to the desired position and thereafter permitting it to contact upon the roller surface and resiliently grip it. Improved techniques, tools and devices for effecting the mounting of the tubular sleeve on the roller for disclosed, as well as the utilization of these techniques for deforming the sleeve to provide a self-aligning conveyor roller.
Inventors
- 👤 John R Lovett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:06
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/06; B65G13/00; B65G13/02; B65G13/06; B65G39/07; B65G39/071; B65G39/073; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53652
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
In combination with a fluid pressure cylinder for mounting an expandable tubular sleeve on a roller, a starting plug slidably mounted within said cylinder for axial displacement therein in response to fluid pressure applied thereto, a radially disposed forward sealing surface on said plug for engaging one end of a roller nested in said cylinder, a peripheral sealing surface on said plug for engaging the wall of said cylinder to cause fluid pressure build-up in said cylinder rearwardly of said plug, and at least one fluid-metering passageway traversing said plug and having a forward discharge port outwardly of said forward sealing surface, whereby to direct fluid under pressure toward the opposite end of said roller.
Claim 2
Dependent Claim
115 words
In combination with a fluid pressure cylinder for mounting an expandable tubular sleeve on a roller, a starting plug slidably mounted within said cylinder for axial displacement therein in response to fluid pressure applied thereto, a radially disposed forward sealing surface on said plug for engaging one end of a roller nested in said cylinder, a peripheral sealing surface on said plug for engaging the wall of said cylinder to cause fluid pressure build-up in said cylinder rearwardly of said plug, and at least one fluid-metering passageway traversing said plug and having a forward discharge port outwardly of said forward sealing surface, whereby to direct fluid under pressure toward the opposite end of said roller.
Claim 3
Dependent Claim
38 words
A combination as defined in claim 1, wherein said forward sealing surface is annular and defines a central opening, and a receptacle communicating with said opening and extending rearwardly thereof to receive axially projecting portions of said roller.
Claim 4
Dependent Claim
48 words
A combination as defined in claim 1, wherein said forward sealing surface is of lesser diameter than the internal diameter of said cylinder, and said peripheral sealing surface comprises a peripheral flange extending rearwardly and outwardly from said forward sealing surface into wiping engagement with said cylinder wall.
Claim 5
Dependent Claim
16 words
A combination as defined in claim 1, wherein said sealing surfaces are formed of resilient material.
Claim 6
Dependent Claim
36 words
A combination as defined in claim 1, including radially-extending guide means provided on said plug and spaced rearwardly of said peripheral sealing means for engaging said cylinder and maintaining said plug in substantial coaxial alignment therewith.
Claim 7
Dependent Claim
18 words
A combination as defined in claim 5, whereIn said guide means comprise a plurality of circumferentially-spaced radial projections.
Claim 8
Dependent Claim
14 words
A combination as defined in claim 5, wherein said guide means comprises a disk.
Claim 9
Dependent Claim
85 words
A starting plug for use with a fluid pressure cylinder in mounting an expandable tubular sleeve on a roller, comprising a forward sealing surface on said plug adapted for engagement with the end of a roller, a flexible peripheral sealing surface on said plug for wiping engagement with the wall of a cylinder, and at least one fluid-metering passageway traversing said peripheral seal and having an exit port outwardly of said forward sealing surface, whereby to direct fluid-pressure toward the opposite end of the roller.
Claim 10
Dependent Claim
85 words
A starting plug for use with a fluid pressure cylinder in mounting an expandable tubular sleeve on a roller, comprising a forward sealing surface on said plug adapted for engagement with the end of a roller, a flexible peripheral sealing surface on said plug for wiping engagement with the wall of a cylinder, and at least one fluid-metering passageway traversing said peripheral seal and having an exit port outwardly of said forward sealing surface, whereby to direct fluid-pressure toward the opposite end of the roller.
Claim 11
Dependent Claim
152 words
In an apparatus for mounting an expandable tubular sleeve on a cylindrical roller of greater diameter than said sleeve, the combination of a fluid pressure cylinder of greater diameter than the roller, said cylinder having communication with a pressure source at one end thereof and being open at its opposite end to receive a roller slidably therein, a starting plug slidably mounted in said cylinder in sealing engagement therewith and presenting a sealing surface to an adjacent end of the roller, spreader means engageable with one end of the sleeve for spreading said end into overlying relationship with said open end of said cylinder, retaining means for securing said one end of the sleeve frictionally to the cylinder, and a pressure face on said starting plug exposed to said pressure source, whereby said starting plug will axially displace said roller into said sleeve in response to fluid pressure supplied to said cylinder.
Claim 12
Dependent Claim
152 words
In an apparatus for mounting an expandable tubular sleeve on a cylindrical roller of greater diameter than said sleeve, the combination of a fluid pressure cylinder of greater diameter than the roller, said cylinder having communication with a pressure source at one end thereof and being open at its opposite end to receive a roller slidably therein, a starting plug slidably mounted in said cylinder in sealing engagement therewith and presenting a sealing surface to an adjacent end of the roller, spreader means engageable with one end of the sleeve for spreading said end into overlying relationship with said open end of said cylinder, retaining means for securing said one end of the sleeve frictionally to the cylinder, and a pressure face on said starting plug exposed to said pressure source, whereby said starting plug will axially displace said roller into said sleeve in response to fluid pressure supplied to said cylinder.
Claim 13
Dependent Claim
37 words
A combination as defined in claim 9, wherein said retaining means comprises a circumferential rib projecting from the external surface of said cylinder adjacent said open end thereof and engageable with said spread end of the sleeve.
Claim 14
Dependent Claim
35 words
A combination as defined in claim 9, wherein said retaining means comprises a circumferential clamp member engageable with said spread end of the sleeve when said sleeve is in said overlying relationship to said cylinder.
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |