US2014182476A1PendingUtilityA1

High capacity conveyor trolley and method

Assignee: FROST TECH LLCPriority: Dec 28, 2012Filed: Dec 23, 2013Published: Jul 3, 2014

Est. expiryDec 28, 2032(~6.5 yrs left)· nominal 20-yr term from priority

Inventors:Charles C. Frost

B61B 3/00

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Claims

Abstract

An overhead conveyor, components therefor and method for making same, in which the conveyor trolley utilizes load wheels having double row bearings, and is designed for a channel having a height “X,” but is built with a maximum allowable load value which is equal to or greater than the maximum allowable load value for a trolley used in channels of height greater than X.

Claims

exact text as granted — not AI-modified

1 . A conveyor trolley comprising: a body and a set of load wheels mounted on said body; said trolley body and said load wheels being dimensioned to be carried in a conveyor channel having a height “X,” but having an allowable load value which is equal to or greater than the maximum allowable load value for a trolley used in channels of height greater than X.

2 . The conveyor trolley of claim 1 comprising: said trolley load wheels having double row bearings.

3 . The conveyor trolley of claim 1 comprising: a 3 inch trolley having a load capacity of at least 1600 pounds.

4 . The conveyor trolley of claim 1 comprising: a 4 inch trolley having a load capacity of at least 4000 pounds.

5 . The conveyor trolley of claim 1 comprising: a 6 inch trolley having a load capacity of at least 8000 pounds.

6 . The conveyor trolley of claim 1 comprising: said load wheels having an outer tracking surface which is generally flat and inclined slightly to match the incline of the track flanges on which the load wheels will ride.

7 . The conveyor trolley of claim 6 comprising: each said load wheel having an outer tracking surface which is wider than the outer tracking surface on prior art wheels for a correspondingly sized trolley.

8 . The conveyor trolley of claim 6 in which said trolley body comprises two steel side-plates, each having a thickness of 7/16 to ½ of an inch.

9 . The conveyor trolley of claim 1 comprising: a 3 inch trolley having a wheel diameter of 2.0-2.2

10 . The conveyor trolley of claim 1 comprising: a 4 inch trolley having a wheel diameter of 2.7-2.9 inches.

11 . The conveyor trolley of claim 1 comprising: a 6 inch trolley having a wheel diameter of 3.2-3.8 inches.

12 . A conveyor trolley comprising: a body and a set of load wheels mounted on said body; each of said load wheels having a double row of bearings positioned next to and parallel to one another within the confines of said load wheel; and said load wheels having an outer tracking surface which is flat and inclined slightly to match the incline of the track flanges on which the load wheels will ride.

13 . The conveyor trolley of claim 12 comprising: each said load wheel having an outer tracking surface which is wider than the outer tracking surface on prior art wheels for a correspondingly sized trolley.

14 . The conveyor trolley of claim 13 comprising: a 3 inch trolley having a wheel diameter of 2.0-2.2 inches.

15 . The conveyor trolley of claim 13 comprising: a 4 inch trolley having a wheel diameter of 2.7-2.9 inches.

16 . The conveyor trolley of claim 13 comprising: a 6 inch trolley having a wheel diameter of 3.2-3.8 inches.

17 . The conveyor trolley of claim 12 comprising: a 3 inch trolley having a wheel diameter of 1.9-2.3.

18 . The conveyor trolley of claim 12 comprising: a 4 inch trolley having a wheel diameter of 2.5-3.0 inches.

19 . The conveyor trolley of claim 12 comprising: a 6 inch trolley having a wheel diameter of 3.2-3.8 inches.

20 . The conveyor trolley of claim 12 in which said trolley body comprises two steel side-plates, each having a thickness of 7/16 to ½ of an inch.

21 . An overhead conveyor comprising: a trolley having a body and a set of load wheels mounted on said body; said trolley body and said load wheels being dimensioned to be carried in a conveyor channel having a height “X,” but having an allowable load value which is equal to or greater than the maximum allowable load value for a trolley used in channels of height greater than X; and a channel for carrying said trolley, wherein the channel strength as determined by pounds of material per foot of track, are 50-75% greater than standard CEMA strengths for a channel of height X, as set forth in the table below:

Trolley
CEMA Strength
Claimed

Channel
Standards
Strengths

3″ I-Beam
5.7 lbs/foot
8.5-10 lbs/foot

4″ I-Beam
7.7 lbs/foot
11.5-13.5 lbs/foot

6″ I-Beam
12.5 lbs/foot
18.7-21.8 lbs/foot

3″ C-Channel
4.1 lbs/foot
6.1-7.2 lbs/foot

4″ C-Channel
5.4 lbs/foot
8.1-9.5 lbs/foot

6″ C-Channel
10.5 lbs/foot
15.7-18.4 lbs/foot

22 . The conveyor trolley of claim 21 comprising: said trolley load wheels having doable row bearings.

23 . The conveyor trolley of claim 22 comprising: said load wheels having an outer tracking surface which is generally flat and inclined slightly to match the incline of the track flanges on which the load wheels will ride.

24 . The conveyor trolley of claim 23 comprising: each said load wheel having an outer tracking surface which is wider than the outer tracking surface on prior art wheels for a correspondingly sized trolley.

25 . The conveyor trolley of claim 24 comprising: axels on said load wheels of ¾ to 1 inch in diameter.

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