# US 5,341,919 A · Pipe conveyor

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- Number: US 5,341,919 A
- Document ID: US5341919A
- Status: Granted
- Kind: A
- Application number: 07/968,576
- Filed: 1992-10-29
- Granted: 1994-08-30
- Earliest claimed: 1991-10-29
- Inventors: Katsuo Mizuno
- Web page: https://patentgrep.com/patent/US5341919A

## CPC

- B65G 19/14: for moving bulk material in closed conduits, e.g. tubes
- B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D)

## Abstract

A pipe conveyor comprising a conveyor pipe 1, a plurality of blades 2 each having a similar sectional configuration to that of the pipe 1, and an endless link chain 3 for linking the blades 2 at suitable intervals and capable of circulating, substances delivered into the pipe 1 being conveyed by the blades 2 which are moved within the pipe 1 in accordance with the circulation of the endless link chain 3, wherein each of the blades 2 comprises an elastic blade 21 having an outer diameter generally equal to or smaller than an inner diameter of the pipe 1, and a curved disc 22 secured to a rear surface of the elastic blade 21 and adapted to support the same.

## Claims

### Claim 1

A pipe conveyor comprising a conveyor pipe, a plurality of blades each having a similar sectional configuration to that of said pipe, and an endless link chain for linking said blades at suitable intervals and capable of circulating, substances delivered into said pipe being conveyed by said blades which are moved within said pipe in accordance with the circulation of said endless link chain, each of said blades comprising an elastic blade having an outer diameter no greater than an inner diameter of said pipe, and a support body secured to a rear surface of said elastic blade and adapted to support the same, wherein the elastic blade is concave and the support body is concave and of the same curvature as the elastic blade.

### Claim 2 (depends on 1)

A pipe conveyor as claimed in claim 1, wherein said elastic blade and said support body are part spherical.

### Claim 3

A pipe conveyor comprising a conveyor pipe, a plurality of blades each having a similar sectional configuration to that of said pipe, and an endless link chain for linking said blades at suitable intervals and capable of circulating, substances delivered into said pipe being conveyed by said blades which are moved within said pipe in accordance with the circulation of said endless link chain, each of said blades comprising an elastic blade having an outer diameter no greater than an inner diameter of said pipe, and a support body secured to a rear surface of said elastic blade and adapted to support the same, wherein both said endless link chain and said support body are offset toward one edge of said elastic blade, and said one edge of said elastic blade coincides with an edge of said support body at said one edge of said elastic blade.