Dual mode pistol-grip grease gun
US5277339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1993 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | May 11, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16N3/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dual mode pistol grip grease gun that operates in either the volume mode or the pressure mode. The grease gun comprises a cylinder head, which has a handle fixed to it. Attached to the handle via a shiftable link is a lever, which has a U-shaped slot disposed at one end. The shiftable link is disposed in the U-shaped slot of the lever, and its position therein defines whether the grease gun is in the volume or the pressure mode. Rotatably attached to the lever is a piston, which enters the cylinder head when the lever is depressed. A stop disposed in the lever that rests against the piston keeps the span between the lever and the handle the same for both the volume and pressure modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.