초록 ▼

Jack-type tools for moving elements such as flooring elements by pulling and, alternatively, by pushing are shown and described. In an embodiment, the jack includes a base, a puller pivotably attached to the base, a ram extendable from the base, and a ram-drive mechanism in power-transmission relati

Jack-type tools for moving elements such as flooring elements by pulling and, alternatively, by pushing are shown and described. In an embodiment, the jack includes a base, a puller pivotably attached to the base, a ram extendable from the base, and a ram-drive mechanism in power-transmission relationship with the ram which is operative to extend the ram. The pivotably attached puller contacts a flooring element side portion during a pulling mode of operation and pivots out of the way so that the jack can push a flooring element during a pushing mode of operation. The ram extends from the base against a fixed surface such as a wall or cabinet to apply a force which pulls the flooring element with the puller to move the puller and flooring element away from the fixed surface and, alternatively, a force which pushes the flooring element by extension of the ram with the tool secured with respect to a subfloor or other support.

대표청구항 ▼

1. A jack for moving a flooring element by pulling or by pushing, the jack comprising: a base;a puller pivotably attached to the base capable of pivoting movement in a first direction to a position enabling puller contact with a flooring element side portion during flooring element pulling and, alte

1. A jack for moving a flooring element by pulling or by pushing, the jack comprising: a base;a puller pivotably attached to the base capable of pivoting movement in a first direction to a position enabling puller contact with a flooring element side portion during flooring element pulling and, alternatively, pivoting movement in an opposite direction to a position out of contact with a flooring element during flooring element pushing;a ram extendable from the base capable of applying (a) a force which pulls the flooring element by extension of the ram against a fixed surface with the puller in contact with the flooring element side portion thereby to move the puller and flooring element away from the fixed surface and, alternatively, (b) a force which pushes the flooring element by extension of the ram against the flooring element side portion with the jack secured to a support; anda ram-drive mechanism in power-transmission relationship with the ram operative to extend the ram. 2. The jack of claim 1 wherein the puller is capable of self-adjusting pivoting movement in the first direction for contact with the flooring element side portion based on a thickness of the flooring element. 3. The jack of claim 2 wherein the base includes a toe capable of placement against a flooring element top side proximate the puller to prevent lifting of the flooring element during application of the pulling force. 4. The jack of claim 3 wherein the puller comprises: a body pivotably attached to the base proximate the toe, the body defining a slot to permit travel of the ram through the puller when the base is on the support; anda flooring element contact portion extending away from the body for contact with the flooring element side portion. 5. The jack of claim 4 wherein the flooring-element contact portion is a flange. 6. The jack of claim 5 wherein: the body includes a pair of spaced-apart arms defining at least a portion of the slot therebetween, each arm being pivotably attached to the base on an opposite side of the toe; andthe flange extends across the arms. 7. The jack of claim 6 wherein the body includes a flange angle between a body top side and a pulling surface on the flange of about 83 degrees to about 87 degrees. 8. The jack of claim 6 wherein the ram comprises: a bar having a distal end; anda pusher attached to the bar distal end. 9. The jack of claim 8 wherein the pusher includes a front surface for contacting the fixed surface during flooring element pulling and, alternatively, the flooring element side portion during flooring element pushing. 10. The jack of claim 9 wherein the ram-drive mechanism comprises: a rack along the bar;a pinion meshed with the rack;a one-way clutch; anda lever which powers pinion rotation through the one-way clutch to extend the ram. 11. The jack of claim 10 wherein the base defines at least one fastener-receiving opening for receiving a fastener capable of securing the base to the support during flooring element pushing. 12. A jack for moving a flooring element by pulling or by pushing, the jack comprising: a base having an axis and a bottom which supports the jack on a surface;a puller pivotably attached to the base having a pulling surface generally normal to the axis, the puller being capable of pivoting movement to a pulling position in which the pulling surface is in contact with a flooring element side portion below the bottom and the surface supporting the jack and, alternatively, to a pushing position in which the pulling surface is above the bottom and out of contact with a flooring element;a ram extendable from the base along the axis capable of applying a pulling force in a direction opposite of ram extension through the puller against the flooring element side portion in contact with the pulling surface below the bottom and the surface supporting the jack and, alternatively, a pushing force through the ram in a direction of ram extension against the flooring element side portion above the bottom; anda ram-drive mechanism in power-transmission relationship with the ram operative to extend the ram. 13. The jack of claim 12 wherein the puller comprises: a body pivotably attached to the base extending outwardly from a base first end, the body defining a slot to permit travel of the ram through the puller when the puller is in the pushing position; anda flange extending away from the body for contact with the flooring element side portion when the puller is in the pulling position. 14. The jack of claim 13 wherein: the body includes a pair of spaced-apart arms defining at least a portion of the slot therebetween, each arm being pivotably attached to the base; andthe flange extends across the arms. 15. The jack of claim 14 wherein the puller is capable of self-adjusting pivoting movement to the pulling position for contact with the flooring element side portion based on a thickness of the flooring element. 16. The jack of claim 15 wherein the base includes a toe capable of placement against a flooring element top side proximate the puller to prevent lifting of the flooring element during application of the pulling force and each arm is pivotably attached to the base on an opposite side of the toe. 17. The jack of claim 16 wherein the body includes a flange angle between a body top side and the pulling surface of about 83 degrees to about 87 degrees. 18. The jack of claim 17 wherein the ram-drive mechanism comprises: a rack along the ram;a pinion meshed with the rack;a one-way clutch; anda lever which powers pinion rotation through the one-way clutch to extend the ram. 19. The jack of claim 18 wherein the base defines at least one fastener-receiving opening for receiving a fastener capable of securing the base to the support during flooring element pushing. 20. A jack for moving a flooring element by pulling or by pushing, the jack comprising: a base having a bottom an axis and a toe for placement against a flooring element top side during pulling;a puller pivotably attached to the base proximate the toe and having a pulling surface generally normal to the axis, the puller being capable of self-adjusting pivoting movement based on a thickness of the flooring element to a pulling position in which the pulling surface is in contact with a flooring element side portion below the bottom and the flooring element top side and, alternatively, self-adjusting pivoting movement to a pushing position in which the pulling surface is above the bottom and out of contact with a flooring element;a ram extendable from the base along the axis capable of applying a pulling force in a direction opposite of ram extension through the puller against the flooring element side portion in contact with the pulling surface below the bottom and the flooring element top side and, alternatively, a pushing force through the ram in a direction of ram extension against the flooring element side portion above the bottom; anda ram-drive mechanism in power-transmission relationship with the ram operative to extend the ram. 21. The jack of claim 20 wherein the puller comprises: a body pivotably attached to the base extending outwardly from a base first end, the body defining a slot to permit travel of the ram through the puller when the puller is in the pushing position; anda flange extending away from the body for contact with the flooring element side portion when the puller is in the pulling position. 22. The jack of claim 21 wherein: the body includes a pair of spaced-apart arms defining at least a portion of the slot therebetween, each arm being pivotably attached to the base; andthe flange extends across the arms. 23. The jack of claim 22 wherein the body includes a flange angle between a body top side and the pulling surface of about 83 degrees to about 87 degrees. 24. The jack of claim 22 wherein the ram-drive mechanism comprises: a rack along the ram;a pinion meshed with the rack;a one-way clutch; anda lever which powers pinion rotation through the one-way clutch to extend the ram. 25. The jack of claim 24 wherein the base defines at least one fastener-receiving opening for receiving a fastener capable of securing the base to a support during flooring element pushing.