1. A low energy wood screw comprising:
a countersunk head having a recess for accommodating a driving tool;
a shank extending from the head to a gimlet point tip, the shank having a tapered neck, main threads, lower threads, and a point;
a plurality of crown ribs extending outwardly from said head and neck;
wherein the main threads have a lead of from about 1.6 to about 2.0 times the lead of a standard screw thread;
wherein the main threads are arranged between the neck and the lower threads, and wherein the main threads have a thread form including an outer tip having a substantially linear profile and a rounded root having a concave profile; and
wherein the lower threads are arranged between the main threads and the point tip, and wherein the lower threads have an asymmetrical thread form profile.
2. The screw of claim 1, further comprising an unthreaded body portion arranged between the main threads and the neck.
3. The screw of claim 1, wherein the body diameter is greater than the main thread minor diameter.
4. The screw of claim 1, wherein the lower threads have a leading flank angle greater than its following flank angle.
5. The screw of claim 1, wherein the lower threads are thread-forming threads.
6. The screw of claim 1, wherein the main threads and the lower threads are right-handed.
7. The screw of claim 1, wherein the head taper angle is steeper than the taper of the neck.
8. The screw of claim 1, wherein at least one of the plurality of ribs has a linear tapered profile.
9. The screw of claim 1, wherein at least one of the plurality of ribs includes an outer edge extending from the head diameter to the lower extent of the neck and includes two flank surfaces extending from the edge to the head and neck.
10. The screw of claim 1, wherein the plurality of ribs consists of from six to ten ribs.
11. The screw of claim 1, wherein the plurality of ribs consists of eight ribs.
12. The screw of claim 1, wherein the concave profile of the main thread root form is an arc of a circle.
13. The screw of claim 1, wherein the main threads and the lower threads meet to make a continuous thread start.
14. The screw of claim 1, wherein the main thread linear tip height is about 32% to about 52% of the main thread height.
15. The screw of claim 1, wherein the main thread linear tip height is about 42% of the main thread height.
16. The screw of claim 1, wherein the lower thread extends towards the head farther than the point.
17. The screw of claim 1, wherein the intersection point of the rounded root with the minor diameter shank surface is located at a distance from a central axis of the main thread that is about 90 percent to about 110 percent of a height of the main thread.
18. The screw of claim 1, wherein the main thread tip has a thread angle of from about 20 to about 40 degrees.
19. The screw of claim 1, wherein the main thread tip has a thread angle of about 30 degrees.
20. The screw of claim 1, wherein crests of the threads of the lower threads are arranged on a convex curve of the asymmetrical profile.
21. The screw of claim 1, wherein the screw includes a lubricating coating.
22. The screw of claim 21, wherein the coating is a water soluble wax.
23. A wood screw comprising:
a head including a recess for accommodating a driving tool; and
a shank coupled to the head and having a threaded section,
wherein the screw is metric size 5\xd750 and the energy required to insert the screw into a Beech wood work-piece is less than about 90 pound-inch-second.
24. A screw as in claim 23, wherein the energy required to insert the screw into a Beech wood work-piece is less than about 80 pound-inch-second.
25. A screw as in claim 23, wherein the energy required to insert the screw into a Beech wood work-piece is less than about 70 pound-inch-second.
26. A screw as in claim 23, wherein the energy required to insert the screw into a Beech wood work-piece is less than about 60 pound-inch-second.
27. A screw as in claim 23, wherein the energy required to insert the screw into a Beech wood work-piece is about 53 pound-inch-second.
28. A wood screw comprising:
a head including a recess for accommodating a driving tool; and
a shank coupled to the head and having a threaded section,
wherein the energy required to insert the screw into a Beech wood work-piece is less than about 90 percent of the energy required to insert a European standard screw into the work-piece.
29. A screw as in claim 28, wherein the energy required to insert the screw into the work-piece is less than about 80 percent of the energy required to insert a European standard screw into the work-piece.
30. A screw as in claim 28, wherein the energy required to insert the screw into the work-piece is about 70 percent of the energy required to insert a European standard screw into the work-piece.
31. A screw as in claim 28, wherein the energy required to insert the screw into the work-piece is less than about 60 percent of the energy required to insert a European standard screw into the work-piece.
32. A screw as in claim 28, wherein the energy required to insert the screw into the work-piece is about 53 percent of the energy required to insert a European standard screw into the work-piece.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A quick disconnect assembly for precise connection and disconnection of components, the quick disconnect assembly comprising:
a first component having a first fitting and a second component having a second fitting, wherein the first fitting is configured to seat against the second fitting;
a receiver secured to the first fitting, wherein the receiver is configured to correspondingly house the second fitting upon selective insertion of the second fitting into the receiver, wherein the receiver includes a contact face, a fork end brace, and a threaded aperture;
a fork having a contact face, a base portion, and two legs with leg ends, the base portion including a securement knob with threadings, wherein rotation of the securement knob advances or retracts the threadings;
whereby insertion of the ends of the legs under the fork end brace of the receiver and rotation of the fork legs about the fork end brace causes the contact face of the fork to seat against the contact face of the receiver, and whereby tightening of the securement knob causes the threadings of the fork to secure into the threaded aperture of the receiver, thereby securing the fork against the receiver.
2. The quick disconnect assembly of claim 1, wherein the legs of the fork are shaped and sized to seat over the second component.
3. The quick disconnect assembly of claim 1, wherein securing the fork to the receiver affixes the second fitting against the first fitting and within the receiver.
4. The quick disconnect assembly of claim 1, wherein the receiver includes a plurality of depressions, and the fork legs include a plurality of protrusions that are positioned and configured to correspondingly mate with the depressions in the receiver, and wherein insertion of the ends of the legs under the fork end brace of the receiver and rotation of the fork legs about the fork end brace causes the protrusions on the fork legs to seat into the depressions within the receiver when the fork is secured against the receiver.
5. The quick disconnect assembly of claim 1, wherein securing the fork against the receiver creates substantially evenly distributed pressure between the first fitting and the second fitting.
6. The quick disconnect assembly of claim 1, wherein the receiver includes a plurality of protrusions, and the fork legs include a plurality of depressions that are positioned and configured to correspondingly mate with the protrusions on the receiver, and wherein insertion of the ends of the legs under the fork end brace of the receiver and rotation of the fork legs about the fork end brace causes the depressions in the fork legs to seat onto the protrusions on the receiver when the fork is secured against the receiver.
7. The quick disconnect assembly of claim 1, wherein the threadings penetrate through the base portion of the fork.
8. The quick disconnect assembly of claim 1, wherein the quick disconnect assembly secures the first component to the second component without the use of loose parts or tools.
9. The quick disconnect assembly of claim 1, wherein the fork is operatively connected to the second component.
10. The quick disconnect assembly of claim 1, wherein the first component comprises an amplifier, the first fitting comprises a mating wave guide fitting, the second component comprises a wave guide, and the second fitting comprises a wave guide end fitting, whereby the quick disconnect assembly is used to secure the wave guide to the amplifier in an antenna system.
11. A quick disconnect assembly for precise connection and disconnection of components, the quick disconnect assembly comprising:
a wave guide having a wave guide end fitting and an amplifier having a mating wave guide fitting, wherein the wave guide end fitting is configured to seat against the mating wave guide fitting;
a receiver secured to the mating wave guide fitting, wherein the receiver is configured to correspondingly house the wave guide end fitting upon selective insertion of the wave guide end fitting into the receiver, wherein the receiver includes a contact face, a fork end brace, and a threaded aperture;
a fork having a contact face, a base portion, and two legs with leg ends, the base portion including a securement knob with threadings, wherein rotation of the securement knob advances or retracts the threadings;
whereby insertion of the ends of the legs under the fork end brace of the receiver and rotation of the fork legs about the fork end brace causes the contact face of the fork to seat against the contact face of the receiver, and whereby tightening of the securement knob causes the threadings of the fork to secure into the threaded aperture of the receiver, thereby securing the fork against the receiver.
12. The quick disconnect assembly of claim 11, wherein the legs of the fork are shaped and sized to seat over the second component.
13. The quick disconnect assembly of claim 11, wherein securing the fork to the receiver affixes the second fitting against the first fitting and within the receiver.
14. The quick disconnect assembly of claim 11, wherein the receiver includes a plurality of depressions, and the fork legs include a plurality of protrusions that are positioned and configured to correspondingly mate with the depressions in the receiver, and wherein insertion of the ends of the legs under the fork end brace of the receiver and rotation of the fork legs about the fork end brace causes the protrusions on the fork legs to seat into the depressions within the receiver when the fork is secured against the receiver.
15. The quick disconnect assembly of claim 11, wherein the fork creates substantially evenly distributed pressure between the first fitting and the second fitting.
16. The quick disconnect assembly of claim 11, wherein the receiver includes a plurality of protrusions, and the fork legs include a plurality of depressions that are positioned and configured to correspondingly mate with the protrusions on the receiver, and wherein insertion of the ends of the legs under the fork end brace of the receiver and rotation of the fork legs about the fork end brace causes the depressions in the fork legs to seat onto the protrusions on the receiver when the fork is secured against the receiver.
17. The quick disconnect assembly of claim 11, wherein the threadings penetrate through the base portion of the fork.
18. The quick disconnect assembly of claim 11, wherein the quick disconnect assembly secures the first component to the second component without the use of loose parts or tools.
19. The quick disconnect assembly of claim 11, wherein the fork is operatively connected to the second component.
20. An antenna system including a quick disconnect assembly for precise connection and disconnection of components, the quick disconnect assembly of the antenna system comprising:
a wave guide having a wave guide end fitting and an amplifier having a mating wave guide fitting, wherein the wave guide end fitting is configured to seat against the mating wave guide fitting;
a receiver secured to the mating wave guide fitting, wherein the receiver is configured to correspondingly house the wave guide end fitting upon selective insertion of the wave guide end fitting into the receiver, wherein the receiver includes a contact face, a fork end brace, and a threaded aperture;
a fork having a contact face, a base portion, and two legs with leg ends, the base portion including a securement knob with threadings, wherein rotation of the securement knob advances or retracts the threadings;
whereby insertion of the ends of the legs under the fork end brace of the receiver and rotation of the fork legs about the fork end brace causes the contact face of the fork to seat against the contact face of the receiver, and whereby tightening of the securement knob causes the threadings of the fork to secure into the threaded aperture of the receiver, thereby securing the fork against the receiver.