Heat shield for firearm suppressors and method

1 . The combination of a ventilating heat guard coaxially mounted to a firearm suppressor;

wherein said suppressor comprises:

an oblong outer shell having a central axial bore allowing the passage of a projectile therethrough from a proximal end to a distal end;

a radially outwardly projecting peripheral beveled shoulder;

wherein said heat guard comprises:

a body having an inner void shaped and dimensioned to accommodate said suppressor;

said body having a proximal opening to said void and a distal opening to said void;

a radially inwardly projecting beveled stop surface;

wherein said beveled stop surface bears against said beveled shoulder, preventing axial movement of said guard with respect to said suppressor in a first axial direction;

wherein said combination further comprises:

said guard further comprising a plurality of angularly spaced apart inwardly extending radial lugs located near a proximal end of said guard;

said suppressor further comprising a plurality of notches engaged by said lugs;

thereby preventing angular movement of said guard with respect to said suppressor.

2 . The combination of claim 1 , wherein said combination further comprises:

said beveled shoulder having a first bevel angle;

said beveled stop surface having a second bevel angle;

wherein a sum of said first bevel angle and said second bevel angle is substantially 90 degrees.

3 . The combination of claim 2 , wherein said first and second bevel angles are substantially 45 degrees.

4 . The combination of claim 1 , wherein said combination further comprises:

said suppressor further comprising:

a proximal journal;

a distal journal axially spaced apart from said proximal journal;

said guard further comprising:

a proximal bearing supported upon said proximal journal;

a distal bearing supported upon said distal journal.

5 . The combination of claim 4 , wherein said combination further comprises:

said proximal bearing having a proximal bearing inner diameter;

said distal bearing having a distal bearing inner diameter;

said proximal journal having a proximal journal outer diameter commensurate with said proximal bearing inner diameter;

said distal journal having a distal journal outer diameter commensurate with said distal bearing inner diameter.

6 . The combination of claim 5 , wherein said combination further comprises:

said proximal bearing having a first plural number of radially inwardly projecting angularly spaced apart proximal stand-off spokes;

said distal bearing having a second plural number of radially inwardly projecting angularly spaced apart distal stand-off spokes separating distal ventilation gaps.

7 . The combination of claim 1 , wherein said combination further comprises:

said guard further comprising a plurality of angularly spaced apart radial vents extending through said body to said inner void;

wherein said vents are located proximal to said beveled stop surface.

8 . The combination of claim 1 , wherein each of said lugs comprises a radially inward facing surface having a first angular dimension that is wider than an angular dimension of a more radially outward portion of said lug.

9 . The combination of a ventilating heat guard coaxially mounted to a firearm suppressor;

wherein said suppressor comprises:

an oblong outer shell having a central axial bore allowing the passage of a projectile therethrough from a proximal end to a distal end;

a radially outwardly projecting peripheral beveled shoulder;

wherein said heat guard comprises:

a body having an inner void shaped and dimensioned to accommodate said suppressor;

said body having a proximal opening to said void and a distal opening to said void;

a radially inwardly projecting beveled stop surface;

wherein said beveled stop surface bears against said beveled shoulder, preventing axial movement of said guard with respect to said suppressor in a first axial direction;

wherein said combination further comprises:

a disk-shaped axial bearing surface located near said proximal opening;

and wherein said suppressor further comprises:

a circumferential groove near said proximal end;

a snap-ring resting within said groove;

a wave spring compressed between said snap-ring and said axial bearing surface.

10 . The combination of claim 9 , wherein said combination further comprises:

said axial bearing surface being located with a well extending distally from a distal end of said guard.

11 . The combination of a ventilating heat guard coaxially mounted to a firearm suppressor;

wherein said suppressor comprises:

an oblong outer shell having a central axial bore allowing the passage of a projectile therethrough from a proximal end to a distal end;

a radially outwardly projecting peripheral beveled shoulder;

wherein said heat guard comprises:

a body having an inner void shaped and dimensioned to accommodate said suppressor;

said body having a proximal opening to said void and a distal opening to said void;

a radially inwardly projecting beveled stop surface;

wherein said beveled stop surface bears against said beveled shoulder, preventing axial movement of said guard with respect to said suppressor in a first axial direction;

wherein said combination further comprises:

said guard further comprising a plurality of axially oblong angularly spaced apart slits extending radially through said body from an outer surface to said void;

wherein said slits are located distal to said beveled stop-surface.

12 . The combination of claim 11 , wherein said combination further comprises:

said suppressor further comprising a heat radiator structure formed on said outer shell;

said guard further comprising said slits being located radially outward from said heat radiator structure.

13 . A method for protecting a user from burns by a firearm suppressor, said method comprises:

selecting a suppressor having an outer shell having a beveled shoulder;

selecting a guard having an inner void that can accommodate said suppressor, and having complimentary beveled stop-surface extending into said void;

aligning said guard angularly with said suppressor so that angular alignment structures line up;

inserting coaxially a proximal end of said suppressor into a distal opening of said guard until said beveled shoulder contacts said beveled stop-surface;

locking the axial position of said suppressor with respect to said guard;

firing said firearm until said suppressor becomes dangerously hot;

touching the guard without being burned; and,

applying torque to said guard to remove said guard from said suppressor while said suppressor is dangerously hot.