Child resistant trigger pump

US4441633A · kind A · utility

Inventor

• Robert A. Bennett · Easton, US

Key dates

• Filing date: Oct 26, 1981
• Grant date: Apr 10, 1984
• Expiry date: Oct 26, 2001

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B11/1057
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A manually operable trigger pump has a pump body, a circular cap disposed below the body and adapted to engage a container having material to be pumped out, a generally vertical trigger pivotally coupled at its upper end to the body and a linkage coupled at one end to the trigger intermediate its ends and extending from the coupled end into the body. The trigger has a surface adjacent the body. The surface has a longitudinally extending groove therein. A locking device is detachably securable to and is manually rotatable about the cap. A generally horizontal arm integral at one end with the device extends radially outward from the cap. The other end of the arm has a tip which is engagable with and disengagable from the trigger surface groove. The device is rotatable to a locked position at which the tip engages the groove. At this point, when the trigger is squeezed, the movement of the trigger is insufficient to actuate the pump. However, if the trigger is pivoted in opposite direction and at the same time the device is rotated to move the tip out of engagement with the groove, the pump is then unlocked and can be operated normally.