Jar opener
A jar/bottle opener has a housing, a first pair of opposed jaws for gripping a jar or bottle and a second pair of opposed jaws for gripping a jar or bottle closure. A driven shaft operates the first and second jaws and turns the second jaws relative to the first jaws.
1. An opener for a container having a screw or twist off closure comprising:
a housing,
a rotational drive shaft having a stationary position,
a first rotational guide and a first spring connecting the first guide to the housing, the first spring having a deflected position storing rotational energy when the shaft is in the stationary position,
a second rotational guide coaxial with the first guide,
a first pair of opposed jaws slidably provided on the first guide,
a first coupling device connecting the first jaws to the housing so that rotation of the first guide causes movement of the first jaws along the first guide,
a second pair of opposed jaws slidably provided on the second guide,
a second coupling device connecting the second jaws to the shaft so that rotation of the shaft causes movement of the second jaws along the second guide, and
the shaft being rotatable in a first direction to move the second jaws to engage a closure of a container between the jaws, and thereby rotational energy in the first spring is released to move the first jaws to engage the container.
2. The opener of claim 1 further including a second spring connecting the second guide to the first guide, the second spring being deflectable to store rotational energy when the shaft rotates in the first direction.
3. The opener of claim 1 further including a switch for causing the shaft to rotate in an opposite direction after the closure has been rotated relative to the container.
4. The opener of claim 1 wherein the second coupling device includes a cam coupled to the shaft and arms between the cam and second jaws.
5. The jar opener of claim 1 wherein the shaft encloses a movable pin, the pin protruding from an end of the shaft and movable to start the shaft rotating when the container is placed between the jaws.