US3726046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum transfer apparatus
Assignee: DREHER M KG
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Filing: 1971-09-01
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Granted: 1973-04-10
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Expires: 1991-09-01
Abstract
Abstract A frame is provided with at least two axially parallel cylindrical rollers on which a drum can be supported on its axially spaced wheels. The drum has axially projecting central pins, and a servicing arrangement is adjacent the frame so that the drum may be moved into the servicing arrangement and back to the frame, for servicing and operating purposes. The servicing arrangement has a guide surface extending from the region of the cylindrical rollers outwardly of the frame and having a free edge remote from the rollers. Two or more support elements are provided having edge faces provided with notches into which the axially projecting pins of the drum can engage when the drum rolls on its wheels over the guide surface and off the free edge.
Inventors
- 👤 M Dreher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
178 words
In an apparatus as described, in combination, at least one drum having a circumferential wall, support wheels at opposite axial ends of said drum and projecting radially beyond said wall, and axially projecting pins at said opposite axial ends; support means adapted to receive said drum for rotatably supporting the same on said support wheels thereof; and servicing means adjacent said support means for rollingly receiving said drum from and returning it to said support means, said servicing means comprising a guide surface for said support wheels extending away from said support means and having a free edge remote from the latter, at least two support elements projecting at least in part upwardly of said guide surface in the region of said opposite axial ends, and at least one recess on each of said support elements at a side of said free edge which is remote from said support means and located at such a level that the respective pins will enter into said recesses when said support wheels roll off said guide surface beyond said free edge.
Claim 2
Dependent Claim
178 words
In an apparatus as described, in combination, at least one drum having a circumferential wall, support wheels at opposite axial ends of said drum and projecting radially beyond said wall, and axially projecting pins at said opposite axial ends; support means adapted to receive said drum for rotatably supporting the same on said support wheels thereof; and servicing means adjacent said support means for rollingly receiving said drum from and returning it to said support means, said servicing means comprising a guide surface for said support wheels extending away from said support means and having a free edge remote from the latter, at least two support elements projecting at least in part upwardly of said guide surface in the region of said opposite axial ends, and at least one recess on each of said support elements at a side of said free edge which is remote from said support means and located at such a level that the respective pins will enter into said recesses when said support wheels roll off said guide surface beyond said free edge.
Claim 3
Dependent Claim
17 words
In an apparatus as defined in claim 1, wherein said guide surface is at least substantially horizontal.
Claim 4
Dependent Claim
46 words
In an apparatus as defined in claim 1, said pins being coaxial with one another and with said wheels, and wherein said wheels each have a predetermined radius, and wherein the distance of said recesses from said free edge is slightly greater than said predetermined radius.
Claim 5
Dependent Claim
31 words
In an apparatus as defined in claim 1, each of said recesses being bounded by an edge portion having, at a side closer to said free edge, a concavely arcurate contour.
Claim 6
Dependent Claim
70 words
In an apparatus as defined in claim 1, each of said recesses being bounded by an edge portion having, at a side closer to said free edge, a contour so selected that on movement of said pins into and out of said recesses in contact with said edge portion, said wheels are immediately proximal to said free edge and said guide surface is tangential to the periphery of said wheels.
Claim 7
Dependent Claim
47 words
In an apparatus as defined in claim 1, said servicing means further comprising at least one additional recess on each of said support elements and remote from said free edge by a distance which is different from that by which the respective one recess is remote therefrom.
Claim 8
Dependent Claim
44 words
In an apparatus as defined in claim 6, wherein said additional recess of each support element is located intermediate said free edge and said one recess, and at a level above said support surface which is lower than the level of said one recess.
Claim 9
Dependent Claim
34 words
In an apparatus as defined in claim 1, wherein said support elements have edge faces which are directed upwardly away from said guide surface, and wherein said recesses are provided in said edge faces.
Claim 10
Dependent Claim
29 words
In an apparatus as defined in claim 8, wherein said edge faceS are inclined upwardly of said guide surface in direciton away from said support means and free edge.
Claim 11
Dependent Claim
21 words
In an apparatus as defined in claim 9, wherein said edge faces are substantially smooth except for said recesses provided therein.
Claim 12
Dependent Claim
80 words
In an apparatus as defined in claim 9, said pins being coaxial with one another and with said wheels, and said wheels having a predetermined radius; and wherein said edge faces each have a first end portion closer to said free edge and spaced upwardly of said guide surface by a distance smaller than said radius, and a second end portion farther from said free edge and spaced upwardly of said guide surface by a distance greater than said radius.
Claim 13
Dependent Claim
26 words
In an apparatus as defined in claim 9, said recesses each having a lower side closer to, and a higher side farther from said free edge.
Claim 14
Dependent Claim
29 words
In an apparatus as defined in claim 12, wherein the depth of said recesses at said lower side thereof is a fraction of the diameter of the respective pins.
Claim 15
Dependent Claim
30 words
In an apparatus as defined in claim 1, said servicing means further comprising wall means defining a receptacle downwardly spaced from said recess, and screen means accommodated in said receptacle.
Claim 16
Dependent Claim
84 words
In an apparatus as defined in claim 1, said support means comprising a pair of axially parallel cylindrical rollers at least one of which is driven in rotation; and wherein said servicing means comprises guide rails located beneath said rollers extending longitudinally thereof, at least one mounting rail extending in part underneath said guide rails, and connecting portions connecting said mounting rail with said guide rails movable longitudinally of the latter so as to enable deplacement of said servicing means axially of said rollers.
Claim 17
Dependent Claim
39 words
An apparatus as defined in claim 15, wherein said mounting rail is of hollow trough-shaped configuration; said servicing means further comprising wall means defining a receptacle downwardly spaced from said recesses, and said mounting rail communicating with said receptacles.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |