Patent ID: 9739417
Date: 2017-08-22
CPC Classifications: F16N

Claim:
1. A grease gun comprising: a press head, a barrel detachably coupled to the press head, a connector formed at the press head for connecting a cartridge that is adapted to be accommodated in the barrel, the cartridge having a peripheral wall and a front end, the connector having a sealing surface, a support for supporting the cartridge, the support being formed at the barrel in a rear end portion facing away from the press head, and a spring adapted to bias the cartridge against the press head, the spring being positioned in the barrel between the support and the rear end of the peripheral wall of the cartridge, with one end of the spring engaging the peripheral wall of the cartridge and biasing, via the peripheral wall, the front end of the cartridge against the sealing surface of the connector, thereby to establish a tight connection between the cartridge and the press head.