All The Claims

1. A circulator, comprising:
a) at least three waveguide arms intersecting at a junction, at least a portion of said at least three waveguide arms and said junction defining a first wall and a second wall that are positioned in an opposing relationship;
b) at least one ferrite element positioned within said junction;
c) an impedance transformer positioned in proximity to said at least one ferrite element, said at least one impedance transformer projecting from said first wall; and
d) a recessed transformer positioned in proximity to said impedance transformer, said recessed transformer being recessed within said first wall.
2. A circulator as defined in claim 1, wherein each of said at least three waveguide arms comprises a rectangular tube, wherein opposing inner walls of said rectangular tubes create at least a portion of said first wall and said second wall.
3. A circulator as defined in claim 2, wherein said impedance transformer is a first impedance transformer in a set of two impedance transformers, said two impedance transformers being positioned respectively on said first wall and said second wall in an opposing manner.
4. A circulator as defined in claim 3, wherein each of said two impedance transformers includes at least three transformer arms that extend into respective ones of said at least three waveguide arms.
5. A circulator as defined in claim 3, wherein said recessed transformer is a first recessed transformer in a set of three recessed transformers, wherein each of said three recessed transformers is recessed within a first wall of a respective one of said at least three waveguide arms.
6. A circulator as defined in claim 5, wherein said set of three recessed transformers is a first set of three recessed transformers, said circulator further comprising a second set of three recessed transformers, wherein each of said recessed transformers in said second set of three recessed transformers is recessed within a second wall of a respective one of said at least three waveguide arms.
7. A circulator as defined in claim 5, wherein said first wall and said second wall are separated by a certain distance, wherein a distance between said two impedance transformer is less than said certain distance, and wherein a distance between two opposing ones of said recessed transformers is greater than said certain distance.
8. A circulator as defined in claim 1, wherein said impedance transformer is integrally formed with said first wall.
9. A waveguide circulator comprising three waveguide arms each comprising a first wall and a second wall, said three waveguide arms intersecting at a junction that includes at least one ferrite element therein, each of said three waveguide arms comprising:
i) an impedance transformer projecting from said first wall; and
ii) a recessed transformer that is recessed within said first wall.
10. A waveguide circulator as defined in claim 9, wherein said first wall and said second wall are opposing inner walls of a rectangular waveguide arm.
11. A waveguide circulator as defined in claim 10, wherein each of said three waveguide arms further comprises:
a) an impedance transformer projecting from said second wall; and
b) a recessed transformer that is recessed within said second wall.
12. A waveguide circulator as defined in claim 11, wherein said impedance transformer projecting from said first wall and said impedance transformer projecting from said second wall each include three transformer arms that extend respectively from said junction into said at least three waveguide arms.
13. A waveguide circulator as defined in claim 11, wherein said first wall and said second wall are separated by a certain distance, wherein a distance between said impedance transformers is less than said certain distance, and wherein a distance between two opposing ones of said recessed transformers is greater than said certain distance.
14. A method, comprising:
a) providing a waveguide circulator comprising:
i) at least three waveguide arms intersecting at a junction, the at least three waveguide arms and the junction defining a first wall and a second wall that are positioned in an opposing relationship;
ii) at least one ferrite element positioned within the junction; and
iii) at least one impedance transformer within the waveguide circulator in proximity to the at least one ferrite element, said impedance transformer projecting into the junction;

b) providing at least one recessed transformer into the first wall of the waveguide circulator.
15. A method as defined in claim 14, wherein providing the at least one recessed transformer into the first wall of the circulator comprises machining the at least one recessed transformer into the first wall of the circulator.
16. A method as defined in claim 14, wherein the circulator comprises a first portion and a second portion that are coupled together, said method further comprising separating the first portion of the circulator from the second portion prior to machining the at least one recessed transformer into the first wall.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A gas combustion apparatus for the combustion treatment of an ammonia-containing gas and a hydrogen sulfide-containing gas, said apparatus comprising:
a first combustion section in which a fuel and the ammonia-containing gas are introduced and burned;
a nitrogen oxide reduction section located downstream of the first combustion section, in which a portion of the hydrogen sulfide-containing gas is introduced and the nitrogen oxides transferred from the first combustion section are reduced under a reducing atmosphere; and
a second combustion section located downstream of the nitrogen oxide reduction section, in which the remaining hydrogen sulfide-containing gas, together with air, is introduced and burned.
2. A gas combustion apparatus as claimed in claim 1, wherein the cross section of the gas flow path extending from the first combustion section to the nitrogen oxide reduction section is made smaller than the cross sections of the first combustion section and the nitrogen oxide reduction section.
3. A gas combustion apparatus as claimed in claim 1, wherein a radiation shield is provided between the nitrogen oxide reduction section and the second combustion section.
4. A gas combustion apparatus as claimed in claim 2, wherein a radiation shield is provided between the nitrogen oxide reduction section and the second combustion section.

1. A surgical drape for lower extremity surgery, comprising:
a drape body divided bilaterally into an operative side and a non-operative side;
an open fenestration disposed on said operative side;
a nonoperative side fenestration disposed on said non-operative side;
an extremity tube having a closed first end and an open second end, said second end sealed to said nonoperative side fenestration.
2. The surgical drape of claim 1, wherein said drape body and said extremity tube are fabricated from fluid impermeable plastic, paper, or fabric.
3. The surgical drape of claim 1, wherein said operative side fenestration and said non-operative side fenestration each measure between 10 cm and 50 cm in diameter.
4. A surgical drape having an open operative fenestration and a second nonoperative fenestration having an extremity tube sealed over said second fenestration, wherein during drape passage, a nonoperative extremity of the patient is passed into said extremity tube while the patient’s operative extremity is brought forth through said open operative fenestration.
5. A surgical drape for use in connection with lower extremity surgery, including total hip replacement, said surgical drape comprising a drape body divided bilaterally to include an open fenestration and a sealed fenestration, said sealed fenestration having an extremity tube disposed over the fenestration opening, such that the extremity draped by the extremity tube can be mobilized freely to allow for intraoperative positioning to facilitate surgical procedures.

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 door hinge cum door checker of vehicles, the door hinge having a fixation arm mounted to a body of a vehicle, a rotary arm mounted to a door and a hinge pin rotatively connection the rotary arm relative to the fixation arm, wherein the fixation arm is integrally formed with the hinge pin disposed with a firs groove and a second groove and a stopper, while the rotary arm is formed at a roller insertedly accommodated into the first groove and the second groove of the hinge pin in response to opened degree of the door and a hitching jaw where the stopper is hitched, thereby performing the function of a door checker.
2. The door hinge cum door checker of vehicles as defined in claim 1, wherein the fixation arm is disposed with a round body formed at a mounting plate having a mounting hole, and the round body is formed thereabove and thereunder with the hinge pin includes a first groove where the roller is received when the door is half-opened and a second groove where the roller is accommodated when the door is fully opened, and a stopper of flatted square protruding piece is formed at an opposite side of the mounting plate at the round body.
3. The door hinge cum door checker of vehicles as defined in claim 1, wherein the rotary arm comprises:
an upper arm having a mounting groove inside an insertion hole at the round body rotated by being inserted into the hinge pin of the fixation arm, where the roller resiliently supported by a resilient member is disposed at the mounting groove, and the hitching jaw where the stopper of fixation arm is hitched is formed at a connecting body extensively formed from the round body;
a lower arm having a same shape and construction as those of the upper arm and being inserted into the hinge pin underneath the fixation arm; and
a coupling plate for being coupled to mounting plates while the upper arm and the lower arm are respectively inserted by upperlower hinge pins and for coupling the upper arm and the lower arm.
4. The door hinge cum door checker of vehicles an defined in claim 3, there are formed between the mounting plates of upper arm and the lower arm and the coupling plate coupling holes each of small diameter for inter-coupling therebetween while mounting holes each of large diameter are formed for coupling to the door.
5. The door hinge cum door checker of vehicles as defined in claim 1, wherein the fixation arm and the rotary arm are covered at a joint area thereof by a cap.