Abstract: A child resistant closure apparatus is provided that is easily opened by the aged and infirm. The child resistant closure apparatus has a container having a push-tab locking device that locks into place in a series of sawtooth projections on an inner surface of a closure. The closure is rotatably screwed onto the container whereby the push-tab locking device locks into one sawtooth projection. Screwing torque in the direction which would disengage the closure from the container is not possible unless the push-tab locking device is manipulated so that an end of a flexible arm is removed from the sawtooth projection.