Multi-angle all-purpose ratchet screwdriver

• US 5,329,834 A
• Filed: 06/07/1993
• Issued: 07/19/1994
• Est. Priority Date: 06/07/1993
• Status: Expired due to Fees

• Current Assignee: Wong, Jason
• Original Assignee: Wong, Jason
• Inventors: Wong, Jason
• Primary Examiner(s): MEISLIN, DEBRA S
• Application Number:
  US08/071,860
• Time in Patent Office: 407 Days
• Field of Search: 81/58.3, 81/58.4, 81/177.8, 81/177.1, 81/177.9, 81/177.4, 81/177.7, 81/489, 81/490, 81/437, 81/438, 81/439
• US Class Current: 81/58.3
• CPC Class Codes: B25B 13/461 with concentric driving and driven member
• CPC Class Codes: B25G 1/066 the grip itself being angularly adjustable
• CPC Class Codes: B25G 1/085 for screwdrivers, wrenches or spanners

Abstract

The invention herein relates to a kind of multi-angle all-purpose ratchet screwdriver that consists mainly of a serrated ratchet wheel on a screwdriver chuck, a ratchet-angle locking plate at the hinged juncture between the handle and the screw driver chuck, and a threaded positioner plate which, when tightened, exerts pressure on the ratchet wheel and the ratchet-angle locking plate, thus, securing the ratchet-angle locking plate against the ratchet wheel on the screwdriver chuck, while also attaining the objective of securing the ratchet-angle locking plate to the screwdriver chuck at various angles. Furthermore, there is a removable accessories holder inside the handle that is secured by a guide seat held against the accessories holder by a snap-fit fast-open cover, which allows the quick removal and replacement of the cover by simply pulling or pushing, and the accessories holder below can then be naturally slid out of the handle, without falling out unnecessarily, to attain the objective of changing screwdriver accessories.

Claims

1. A multi-angle all-purpose ratchet screwdriver comprising:

a screwdriver chuck having one end for holding different size fastener loosening tools and having another end formed as a U-shaped hinged section having two vertical arms formed with serrations which constitute a multi-angular ratchet wheel;

a handle having a hinge tab, a threaded section and grip section having a tubular space therein;

a positioner plate for screwing, securing and movement on the threaded section;

a ratchet-angle locking plate having a slot for inserting the hinge tab of the handle, and having two rows of toothed ridges which enmesh with said serrations;

a first connecting means for pivotally connecting said screwdriver chuck to said handle;

an accessories holder installed into the tubular space inside the handle for holding different size screw unfastening tools;

a seat guide secured onto an upper end of the grip section of the handle, and having a seat lock for insertion of a second connecting means, and having a securing tab; and

a cover having a seat lock on one end to connect to the seat lock of said seat guide for holding the inserted second connecting means, which enable the cover to be removed and replaced, and the cover having a catch for interlocking with the securing tab on the seat guide to prevent the accessories holder from slipping out of the handle,

wherein screw-on pressure produced by the positioner plate that is exerted on the toothed ridges on the ratchet-angle locking plate which are enmeshed with serrations of the multi-angle ratchet wheel allows firm adjustment over a varied range of angles.

2. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein the accessories holder, ensconced inside the tubular space of the handle for holding a screw unfastening tool.

3. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein the cover is a removable cover and wherein the accessories holder is slidable to slide out of the tubular space in the handle when said cover is removed.

4. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein the grip section of the handle has a shape of one of hexagonal, square, round, and square with rounded corners, and wherein the accessories holder, seat guide and cover with the handle having a shape according to the shape of the handle.

5. A multi-angle all-purpose ratchet screwdriver according to claim 1 further comprising a non-slip sleeve disposed on an outside surface of said grip section.

6. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein said grip section having securing tabs positioned in parallel juxtaposition on outer sides of said grip section, said securing tabs for insertion of said seat guide.

7. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein said ratchet-angle locking plate is disk shaped.

8. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein said first connecting means is a columnar shaft rod.

9. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein said accessories holder includes a plurality of troughs to hold said screw unfastening tools.

10. A multi-angle all-purpose ratchet screwdriver according to claim 9 wherein said troughs are semi-circular in shape.

11. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein said accessories holder includes guide grooves provided on right and left sides of a center line on sides of the accessories holder.

12. A multi-angle all-purpose ratchet screwdriver according to claim 11 wherein said seat guide has two oppositely positioned guide tabs located on an inside of said seat guide, said guide tabs for insertion into said guide grooves for alignment and tracking.

13. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein said second connecting means is a cotter pin and spring.

14. A multi-angle all-purpose ratchet screwdriver according to claim 1 wherein said positioner plate is conical with fluted exterior sides to increase surface friction and inside is threaded.