Air pump having pressure gauge thereon
US6558129B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Oct 23, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B33/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air pump comprises a base with footplate, an upright cylinder upwardly extended from the base, a inflation piston unit for reciprocating motion in the upright cylinder to pump air out of the upright cylinder, a flexible air tube connected to the upright cylinder, an inflation nozzle connected to one end of the flexible air tube for output of compressed air, and a pressure gauge mounted in a chamber in the base and disposed in air communication with the upright cylinder and adapted to measure the pressure of air of an inflatable device to which the inflation nozzle is fastened. The pressure gauge has a face marked with indication signs in the negative form, and a cover hinged to the base and adapted to close the pressure gauge. The cover has a mirror disposed at an inner side and adapted to reflect the image of the reading of the indication signs of the pressure gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.