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US4044669A Expired / Lapsed US ⏱️ 0.0 years remaining

Rotary screen mounting device

Assignee: ALMEDAHLS AB
•
Filing: 1975-05-30
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Granted: 1977-08-30
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Expires: 1995-05-30
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Abstract

Abstract This invention relates to a device for releasably mounting thin walled cylindrical members in a machine involving rotary working operations, such as rotary screens used in rotary printing presses. The device comprises cylindrical end members adapted to be mounted on the rotary machine and adapted to fit within and engage inner peripheral flanges at the ends of the cylinder. The end members comprise an annular slot which contains a ring member expandible by suitable pressure means. Each ring member contains an outer annular groove adapted to engage the inner flange at each end of the cylinder upon expansion of the ring member thereby securing the ends of the cylinder on each end member. The ring member can be a steel band expandable by the action of a pressurized air tube mounted in the annular slot, or alternatively, the ring member can be an outer wedge ring disposed in the annular slot with an inner wedge ring in the slot which can be axially moved and thus radially moving the outer wedge ring. With the cylinder mounted between the end members, it is capable of being stretched in an axial direction.

Inventors

  • 👤 Harald Johan Luther

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 21:13
CPC Classifications
F; F16; F16C; F16C13/00; B; B41; B41F; B41F15/00; B41F15/14; B41F15/34; B41F15/38; F16C2226/00; F16C2226/10; F16C2226/16

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 178 words
A device for releasably mounting a thin walled cylindrical member in a rotary machine, whereby said cylindrical member can be installed and maintained in an axially stretched condition and used in rotary working operations, comprising a pair of cylindrical mounting members disposed in spaced axial alignment in said rotary machine, each of said mounting members comprising an annular outer peripheral slot, a radially outwardly expansible ring member containing an annular outer peripheral groove disposed in said slot within the outer periphery of each said mounting member, annular expansion means disposed in said slot for outwardly expanding said ring member, said thin walled member comprising a peripheral flange disposed on the inner annular surface of each end thereof, said peripheral flange of said thin walled member engaging said groove of said ring member and being retained therein upon expansion of said ring member, whereby when both of said flanges are engaged and retained in said respective groove members, said thin walled member can be axially stretched and maintained in an axially stretched condition for use in rotary working operations.
Claim 2
Independent Claim 178 words
A device for releasably mounting a thin walled cylindrical member in a rotary machine, whereby said cylindrical member can be installed and maintained in an axially stretched condition and used in rotary working operations, comprising a pair of cylindrical mounting members disposed in spaced axial alignment in said rotary machine, each of said mounting members comprising an annular outer peripheral slot, a radially outwardly expansible ring member containing an annular outer peripheral groove disposed in said slot within the outer periphery of each said mounting member, annular expansion means disposed in said slot for outwardly expanding said ring member, said thin walled member comprising a peripheral flange disposed on the inner annular surface of each end thereof, said peripheral flange of said thin walled member engaging said groove of said ring member and being retained therein upon expansion of said ring member, whereby when both of said flanges are engaged and retained in said respective groove members, said thin walled member can be axially stretched and maintained in an axially stretched condition for use in rotary working operations.
Claim 3
Dependent Claim 19 words
The device of claim 1 wherein said expansion means comprises fluid pressure means for radially expanding said ring member.
Claim 4
Dependent Claim 19 words
The device of claim 2 wherein said pressure means comprises an air tube which can be pressurized and inflated.
Claim 5
Dependent Claim 23 words
The device of claim 3 wherein said air tube is actuated by nipple disposed through a radially extending portion of said mounting member.
Claim 6
Dependent Claim 38 words
The device of claim 1 wherein said ring member has an inner wedged surface and said expansion means comprises an inner wedge means movable against said wedged surface of said ring means for radially expanding said ring means.
Claim 7
Dependent Claim 24 words
The device of claim 5 wherein said inner wedge means is actuated by screw means disposed through a radial portion of said mounting member.

References Cited (Backward Citations)

US2235730A Cited
US2890517A Cited
US2965025A Cited
US3176843A Cited
AT288446B Cited
US3702098A Cited
US3786749A Cited
US3893394A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-08-29 1981-02-28 1981-08-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-08-29 1985-02-28 1985-08-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-08-29 1989-02-28 1989-08-30 $7700.00 Window Closed / Lapsed

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