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US 4,903,820 AGranted
Idler rollers for belt conveyors
OwnerEdward R. Fyfeinventor
Life of this patent
Estimating the term…
Abstract
A conveyor belt advances over an assembly of cylindrical idler rollers. Each idler roller includes a cylindrical body rotatable about an axially disposed tubular shaft. Air under pressure enters the proximal end of the tubular shaft and advances through the tubular shaft to be discharged through openings in the distal end of the tubular shaft. The air under pressure leaving the distal end of the tubular shaft advances through the space between the inner wall of the cylindrical body of the idler roller and the outer wall of the tubular shaft to be vented to atmosphere for reducing heat build-up in the idler roller.
Claims24
A conveyor idler roller for a belt conveyor comprising:
- (a) a cylindrical body over which said belt conveyor advances formed with a central opening along the axis thereof, said central opening having an open end;
- (b) a tubular shaft insertable into said central opening through the open end thereof and disposed within said central opening with the axis thereof coextensive with the axis of said cylindrical body, said cylindrical body being freely rotatable about the axis of said tubular shaft for the advancement of said belt conveyor thereover, said tubular shaft having a proximal end and a distal end with an opening at said proximal end and with an opening at said distal end,
- (c) said cylindrical body and said tubular shaft cooperating to form means therebetween disposed in the vicinity of the open end of said central opening for preventing axial displacement of said cylindrical body along said tubular shaft while permitting said cylindrical body to rotate freely about the axis of said tubular shaft and for inhibiting the penetration of foreign matter in said central opening of said cylindrical body;
- and
- (d) a source of coolant communicating with the opening at the proximal end of said tubular shaft, said coolant advancing through said tubular shaft and discharging through said opening in the distal end of said tubular shaft, said coolant advancing through a space between said cylindrical body and said tubular shaft to be vented to atmosphere at said proximal end of said tubular shaft for reducing heat build-up in said idler roller.
2 more elements
A conveyor idler roller for a belt conveyor comprising:
- (a) a cylindrical body formed with a central opening, said central opening having an open end at one end of said cylindrical body;
- (b) a tubular shaft insertable into said central opening through the open end of said central opening at said one end of said cylindrical body and disposed within said central opening coaxially with the axis of said cylindrical body, said cylindrical body being rotatable freely about the axis of said tubular shaft, said tubular shaft having a proximal end and a distal end with an opening at said proximal end and with an opening at said distal end,
- (c) said cylindrical body and said tubular shaft cooperating to form means therebetween disposed adjacent said one end of said cylindrical body for preventing axial displacement of said cylindrical body along said tubular shaft while permitting said cylindrical body to rotate freely about the axis of said tubular shaft and for inhibiting the penetration of foreign matter in said central opening of said cylindrical body;
- (d) a cap secured to said one end of said cylindrical body, said cap having a central opening to receive the proximal end of said shaft;
- and
- (e) a source of coolant communicating with the opening at the proximal end of said tubular shaft, said coolant advancing through said tubular shaft and discharging through the opening in the distal end of said tubular shaft, said coolant advancing in a space between said cylindrical body and said tubular shaft to be vented to atmosphere at said proximal end of said tubular shaft for reducing heat build-up in said idler roller.
3 more elements
A conveyor idler roller for a belt conveyor comprising:
- (a) a cylindrical body formed with a central opening along the axis thereof;
- (b) a tubular shaft disposed within said central opening with the axis thereof coextensive with the axis of said cylindrical body, said cylindrical body being rotatable freely about the axis of said tubular shaft, said tubular shaft being formed with a radially extending groove extending inwardly from the cylindrical wall of said tubular shaft, said tubular shaft having a proximal end and a distal end with an opening at said proximal end and with an opening at said distal end;
- (c) a plurality of angularly spaced screws extending radially from the exterior wall of said cylindrical body into said central opening and into said groove to prevent axial displacement of said cylindrical body along said tubular shaft while permitting said cylindrical body to rotate freely about the axis of said tubular shaft;
- and
- (d) a source of coolant communicating with the opening at the proximal end of said tubular shaft, said coolant advancing through said tubular shaft and discharging through said opening in the distal end of said tubular shaft, said coolant advancing in a space between said cylindrical body and said tubular shaft to be vented to atmosphere at the proximal end of said tubular shaft for reducing heat build-up in said idler roller.
2 more elements
A conveyor idler roller for a belt conveyor comprising:
- (a) a cylindrical body over which said belt conveyor advances formed with a central opening along the axis thereof, said central opening having an open end:
- (b) a tubular shaft disposed in said central opening through the open end thereof and disposed within said central opening with the axis thereof coextensive with the axis of said cylindrical body, said cylindrical body being freely rotatable about the axis of said tubular shaft for the advancement of said belt conveyor thereover, said tubular shaft having a proximal end and a distal end with an opening at said proximal end and with an opening at said distal end;
- and
- (c) a source of coolant communicating with the opening at said proximal end of said tubular shaft, said coolant advancing through said tubular shaft and discharging through said opening in the distal end of said tubular shaft, said coolant advancing through a space between said cylindrical body and said tubular shaft to be vented to atmosphere at the said proximal end of said tubular shaft for reducing heat build-up in said idler roller.
1 more element
Dependencies are inferred from the claim text.