Manual of U.S. Patent Classification
as of June 30, 2000

Class
193
CONVEYORS, CHUTES, SKIDS, GUIDES, AND WAYS

Class definitions may be accessed by clicking on the class title, above.
Subclass definitions may be accessed by clicking on the subclass number, below.

Patents classified in a subclass may be accessed by clicking on the " " icon following the subclass number, below.

( please note that links to definitions and classified patents may not be available for some classes and subclasses )

For search strategies, please refer to the Classification Index Explanation of Data web page.

Subclass		Title
ClassTitle		===> CONVEYORS, CHUTES, SKIDS, GUIDES, AND WAYS
1		MISCELLANEOUS
2R		CHUTES
3		. Loading or trimming
4		. Unloading
5		. . Vehicle wall supported
6		. . Extensible trough
7		. Fruit
8		. Mail
9		. Grain drill
10		. For rotary drum
11		. With sprayer
12		. Spiral
13		. . Switch
14		. Sectional, multiple-point discharge
15		. Vertically adjustable, bodily
16		. Horizontal and vertical swing
17		. Vertical swing
18		. . Counterweight
19		. . . Varied
20		. . . Valved
21		. . Valved
		. Horizontal swing
22		. . Swiveled sections
23		. . Multiple-point discharge
24		. Counterweight
25R		. Flexible wall
25A		. . Open-face chutes
25E		. . Individual elements
25AC		. . Ammunition chutes
25S		. . Resilient conduit or spring construction
25FT		. . Feed tracks
25B		. . Balloon or inflatable members
25C		. . Extensible, flexible chutes
27		. Zigzag
28		. . Switch
		. Vertical pipe
29		. . Multiple-point discharge
30		. . Telescopic
31R		. Switch
31A		. . Chute switches
32		. Retarder
33		. Wall
34		. . Vertical
2A		. Chute connections
2B		. Wall vibrators
2C		. Variable capacity troughs
2D		. Endless gravity
2E		. Cup
35R		ROLLERWAYS
36		. Switch
37		. Rollers
35A		. Abutments and brakes for roller conveyers
35SS		. Submerging and rising
35C		. Centering and clamps (guides, generally)
35TE		. Telescoping and extending
35F		. Flexible
35MD		. Multidirectional
35J		. Joints
35G		. Gates
35B		. Biased rollers
35S		. Spiral
38		SKIDWAYS
39		. Switch
40		. Retarder
41		SKIDS
42		ROLLER JACKS
44		ORIENTER
45		. Manual or mechanical means moves article to upset
46		. Grooved or twisted chute
47		. Article upset about fixed point
48		. Article upset about movable point
		******************************
		DIGESTS
		******************************
DIG 1		Coin chute
DIG 2		Indicators, safety devices and signals

Information Products Division -- Contacts

Questions regarding this report should be directed to:

U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231

tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov

---

Last Modified: 6 October 2000