| 摘要 |
<p>A dispensing device (10) includes two chambers (14,16), one for holding a resin and another for a hardener. Each chamber has an exit port (26,28) formed in a neck (18) which contains passageways (17,19) leading to each of the chambers. The neck is equipped with external threads (24) which mate with internal threads (54) on a nozzle adjusting nut (50). A nozzle (36), which is carried by the nut (50), can be moved from an open position to a closed position in which a portion (37) of the nozzle's base (38) closes the ports (26,28). A divider (34) projects from the neck (18) at a location near and between the ports (26,28) and the nozzle (36) has a slot (42) to receive the divider (34). The divider serves to prevent mixing of the components until well after they exit the ports. The divider/slot arrangement further prevents relative rotation between the nozzle and the neck. Three separate sealing surfaces are formed on the base of the nozzle. One (40) is cylindrical and seals against an 0-ring (30) carried by the neck. Two others (48,49) are laterally disposed and are generally perpendicular to the axis of the device. The lateral sealing surfaces are on opposite sides of the slot (42) and move into and out of sealing engagement with the ports. The nut (50) operates as a valve to open and close the ports (26,28), and the nut acts as a retainer to non-rotatably hold the nozzle (36) on the neck.</p> |
