Issued Patents All Time
Showing 101–122 of 122 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6220836 | Clamp device for a hand air pump | — | 2001-04-24 |
| 6196807 | Pressure gauge of a bicycle tire pump with accurate indication | — | 2001-03-06 |
| 6190142 | Manual air pumps having selectable high pressure and high pressure modes | — | 2001-02-20 |
| 6146116 | Pumping device with a pivotal lever for various valves | Louis Chuang | 2000-11-14 |
| 6135733 | Manual air pump having selectable high pressure and low pressure modes | — | 2000-10-24 |
| 6120265 | Two-stroke operable pump | — | 2000-09-19 |
| 6073645 | Pumping device with an internal pivotal tube for various valves | — | 2000-06-13 |
| 6070855 | Minor-amount release valve for a hand air pump | Louis Chuang | 2000-06-06 |
| 6065947 | Two-stroke operable pump | — | 2000-05-23 |
| 6050791 | Structure for connecting a head to a non-circular cylinder of a bicycle tire pump | — | 2000-04-18 |
| 6017196 | Bicycle inflator | — | 2000-01-25 |
| 5975109 | Retaining pin pumper devices of the type having a pivotal lever for various valves | — | 1999-11-02 |
| 5921269 | Tire inflator | — | 1999-07-13 |
| 5902097 | Pumping device with a clamping nozzle for various valves | — | 1999-05-11 |
| 5819781 | Pumping device with a pivotal lever for various valves | — | 1998-10-13 |
| 5779457 | Hand pump for pumping air of lower pressure and high pressure | Louis Chuang | 1998-07-14 |
| 5683234 | Hand pump apparatus having two pumping strokes and having an attachment member for engaging with different tire valves | Louis Chuang | 1997-11-04 |
| 5666990 | Attachment member for engaging with different tire valves | — | 1997-09-16 |
| 5645100 | Hand pump for engaging with different tire valves | Louis Chuang | 1997-07-08 |
| 5638865 | Hand pump attachment member for engaging with different tire valves | — | 1997-06-17 |
| 5624242 | Hand air pump for different types of valves | — | 1997-04-29 |
| 5551848 | Attachment mechanism for portable hand pump | Louis Chuang | 1996-09-03 |