Patent ID: 7682098
Filing Date: 2010-03-23
Classification: B05C

Abstract:
1. A liquid applicator having a collapsible liquid reservoir comprising: a. an elongated outer chamber wall and a seal preventing leakage in the liquid reservoir and having a characteristic length; b. an inner piston having a length substantially equal to the characteristic length, wherein the inner piston is telescopically received in the outer chamber wall; c. an elongated intermediate chamber wall having a length substantially equal to the characteristic length and wherein the intermediate chamber wall is telescopically received in the outer chamber wall and located circumferentially intermediate the inner piston and the outer chamber wall, the intermediate chamber wall including an end cap having a first portion disposed circumferentially around the intermediate chamber wall and a second portion extending partially over an end of the intermediate chamber wall and defining an opening providing fluid communication between the liquid reservoirs formed by the intermediate and outer chamber walls, and including a seal preventing leakage in the liquid reservoir formed by the intermediate chamber wall, and