Hale Fire Pump Co.
47Patents
0Active
47Granted
37Portfolio score
Filing activity: Dec 24, 1975 → Sep 11, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5727933A | Pump and flow sensor combination | Mechanical Engineering; Lighting; Heating | 123 | Expired |
| US5018665A | Thermal relief valve | Physics | 76 | Expired |
| US5243761A | Portable rescue tool | Performing Operations; Transporting | 67 | Expired |
| US5411100A | Compressed air foam system | Physics | 52 | Expired |
| US4587862A | Transmission for pumps | Emerging Cross-Sectional Technologies | 52 | Expired |
| US4337830A | Pump assembly | Mechanical Engineering; Lighting; Heating | 51 | Expired |
| US5993183A | Gear coatings for rotary gear pumps | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5255747A | Compressed air foam system | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5427181A | Mixer for compressed air foam system | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5145014A | Air supply system for firefighting apparatus | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4064891A | Plural fluid proportioning apparatus | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4503812A | Starting system for a portable engine-pump unit | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4973028A | Rescue tool jaw | Human Necessities | 19 | Expired |
| US4712516A | Fuel supply for a rotary piston engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4506445A | Rescue cutter tool | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4633895A | Fluid proportioning apparatus | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4976319A | Water driven fan for firefighting | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4786239A | Pumping system selectably operable as a fire pump or a hydraulic pump | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| USD303533S | Housing for a portable pump | General | 16 | Expired |
| US4089345A | Discharge valve | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4643652A | Portable engine-pump assembly | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4448256A | Foam liquid proportioner | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4979693A | Portable hose reel | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4245952A | Pump | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4129402A | Self-priming centrifugal trash pump | Mechanical Engineering; Lighting; Heating | 13 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.