Patent illustrations are a critical part of any well-done patent application, as they provide a deeper understanding of an invention through the power of visualization. However, sometimes they are more bizarre than helpful. Here’s a look at some of the wackiest patent drawings from real published patents.

1. Patent No. 6739933 – A Wearable drink holder

2. Patent No. 6313371 – Flatulence deodorizer

3. Patent No. 6,360,693 – Animal Toy

4. Patent No. 6293874 – User-operated amusement apparatus for kicking the user’s buttocks

5. Patent No. 5966743 – Substance dispensing headgear

6. Patent No. 20050233676 – Inflatable Ride-on Toy Animals

7. Patent No. 3216423 – Apparatus for facilitating the birth of a child by centrifugal force

8. Patent No. 4344424 – Anti-eating face mask

9. Patent No. 6490999 – Collar apparatus enabling secure handling of a snake by tether

10. Patent No. 269766 – Animal-trap

11. Patent No. 6206000 – Canine scuba diving apparatus

12. Patent No. 398984 – Flying-machine

13. Patent No. 7484328 – Finger mounted insect dissuasion device and method of use

14. Patent No. 118435 – Improvement in creeping-dolls

15. Patent No. 4233942 – Animal ear protectors

16. Patent No. 5443036 – Method of exercising a cat

17. Patent No. 5031161 – Life expectancy timepiece

18. Patent No. 5606748 – Feminine undergarment with calendar

19. Patent No. 6681419 – Forehead support apparatus

20. Patent No. 5971829 – Motorized ice cream cone

21. Patent No. 5901666 – Pet display clothing

22. Patent No. 8291634  – Motion decoy system

23. Patent No. 790063 – Double bicycle for looping the loop

24. Patent No. 20030019894 – Device for the quick and easy use of a small size cellular telephone

25. Patent No. 20090195392 – Laugh detector and system and method for tracking an emotional response to a media presentation