Jack hammer专利检索-冲击压实机工程机械土方工程和土方机械专利检索查询-专利查询网

Jack hammer

阅读：776发布：2021-02-07

专利汇可以提供Jack hammer专利检索，专利查询，专利分析的服务。并且An improved manually actuated self-energizing jack hammer or driver useful as a demolition tool, a compactor, a post or pile driver, a digging tool and the like, composed of an inner anvil tube or barrel receiving a post or pile therein or mounting a tamper, a breaker, a cutter, a digger or the like tools and a tubular ram or hammer telescoped over and guided on the barrel with a recoil spring between the anvil and hammer for lifting the ram after it delivers a hammer blow to the anvil barrel. The inner tube or anvile barrel separates and insulates the driver member such as a fence post or tool from contact with the hammer ram and at the same time guides the ram to insure maximum direct delivery of force from the ram to the tool or post. Handles are provided on the ram for convenient grasping by a single operator to impart a rhythmic reciprocation to the ram aided by the recoil spring to deliver maximum impact blows through the anvil barrel to the tool or post with minimum manual effort. The telescoped barrel tube and ram tube are preferably non-circular in crosssection to prevent relative rotation of the tubes and a heavy hard steel hammer head is secured in the open top of the ram tube preferably in non-mating relation to provide an air vent. The guide tube or barrel also preferably has a heavy hard steel head on the top end thereof providing an anvil receiving the blows from the hammer head. A lock bolt is provided to selectively hold the tubes in telescoped relation.，下面是Jack hammer专利的具体信息内容。

权利要求

1. A driver tool which comprises a hollow guide tube having an anvil head secured to the top end thereof and a chuck secured to the bottom end thereof, a hollow driving ram tube telescoped over said guide tube in non-rotatable relation therewith having a hammer head Adapted to impact against the anvil head of said guide tube, a compression spring between the hammer head and anvil head effective to recoil the hammer head away from the anvil head after each blow of the hammer head against the ram head, said spring having a free extended length substantially less than the stroke of the ram tube on the guide tube, and elongated handles secured to the ram tube and extending in laterally spaced relation from opposite sides of the ram tube for a substantial portion of the length of the ram tube.

2. The driver tool of claim 1 wherein the guide tube and the ram tube have non-circular cross-section configurations in mating relation preventing relative rotation of the tubes.

3. The driver tool of claim 1 wherein the guide tube and the ram tube have oval cross-sectional shapes in mated non-rotating engagement.

4. The driver tool of claim 1 wherein the chuck is removable.

5. The driver tool of claim 1 wherein the guide tube has post guide means therein directing a post to engage the central portion of the anvil head.

6. A jack hammer which comprises telescoped tubes in non-rotating mated engagement, an anvil head secured to the inner tube, a hammer head secured to the outer tube, a coil spring between said heads effective to recoil the hammer head away from the anvil head after each blow of the hammer head against the anvil head, said spring having a free extended length less than the stroke of the outer tube on the inner tube, and elongated handle means secured to the outer tube having gripping portions in laterally spaced relation from opposite sides of the outer tube.

7. The jack hammer of claim 6 wherein said tubes are oval shaped.

8. The jack hammer of claim 8 wherein the outer tube is oval shaped, the hammer head is cylindrical and extends into the upper end of the outer tube and air vent passages are provided through the top end of the outer tube between the cylindrical hammer head and the oval tube.

9. The jack hammer of claim 8 wherein the tubes are cylindrical with cooperating lug and slots holding the tubes against relative rotation.

10. The jack hammer of claim 8 wherein the outer tube has elongated slots terminating adjacent the ends thereof and the inner tube has projections riding in the slots.

11. The jack hammer of claim 10 wherein the projections are the ends of a removable pin traversing the inner tube.

12. A driver tool which comprises a hollow guide tube having an anvil head secured to the top end thereof and a chuck secured to the bottom end thereof, a hollow driving ram tube telescoped over said guide tube in non-rotatable relation therewith having a hammer head adapted to impact against the anvil head of said guide tube, a compression spring between the hammer head and anvil head effective to recoil the hammer head away from the anvil head after each blow of the hammer head against the ram head, elongated handles secured to the ram tube and extending in laterally spaced relation from opposite sides of the ram tube for substantial portion of the length of the ram tube, and shock absorbing means connecting the handles to the ram tube.

13. A driver tool which comprises a hollow guide tube having an anvil head secured to the top end thereof and a chuck secured to the bottom end thereof, a hollow driving ram tube telescoped over said guide tube in non-rotatable relation therewith having a hammer head adapted to impact against the anvil head of said guide tube, a compression spring between the hammer head and anvil head effective to recoil the hammer head away from the anvil head after each blow of the hammer head against the ram head, elongated handles secured to the ram tube and extending in laterally spaced relation from opposite sides of the ram tube for a substantial portion of the length of the ram tube, a lock bolt carried by a handle, said ram tube having an aperture freely receiving said lock bolt, and said guide tube having a recess receiving the lock bolt when the recess is aligned witH the ram tube aperture whereby the ram tube and guide tube are locked together in telescoped relation.

14. A jack hammer which comprises telescoped tubes in non-rotating mated engagement, an anvil head secured to the inner tube, a cylindrical hammer head secured to the outer tube, a coil spring between said heads extending into the hollow interior of the cylindrical head effective to recoil the hammer head away from the anvil head after each blow of the hammer head against the anvil head, and elongated handle means secured to the outer tube having gripping portions in laterally spaced relation from opposite sides of the outer tube.

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Jack hammer

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