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A helmet has a shell with a front opening covered by a faceguard of elongated wire segments. Loopstraps engage around wire segments at sides and a crown of the shell and fasteners connect the loopstraps to the shell. The fasteners each have a nut extending from an inside of the helmet shell out into

A helmet has a shell with a front opening covered by a faceguard of elongated wire segments. Loopstraps engage around wire segments at sides and a crown of the shell and fasteners connect the loopstraps to the shell. The fasteners each have a nut extending from an inside of the helmet shell out into a hole of the shell and an aperture of the loopstrap, and a stud removably connected to the nut by pushing and turning the stud by about a quarter turn to lock the stud to the nut. A tension spring between a head of the stud and the loopstrap urges the stud away from the nut when the stud is rotated to unlock the stud for facilitating a quick removal of the stud from the nut and a quick disconnection of the loopstrap and faceguard from the helmet shell.

대표청구항 ▼

1. A protective helmet, comprising: a helmet shell (12) having opposite sides (28) and a crown (30) with front edges defining a front opening for exposing the face of a wearer of the helmet, the opposite sides and the crown each containing a hole (32) through the helmet shell and adjacent the front

1. A protective helmet, comprising: a helmet shell (12) having opposite sides (28) and a crown (30) with front edges defining a front opening for exposing the face of a wearer of the helmet, the opposite sides and the crown each containing a hole (32) through the helmet shell and adjacent the front opening; a faceguard (16) comprising a plurality of elongated wire segments (18) that are connected to each other, the faceguard extending across the opposite sides and downwardly from the crown of the helmet shell for covering at least a portion of the front opening;a first loopstrap (24) engaged around one wire segment (76) of the faceguard that has at least a portion that is adjacent one side (28) of the helmet shell (12) on one side of the front opening;a second loopstrap (25) engaged around one wire segment of the faceguard that is adjacent an opposite side of the helmet shell on an opposite side of the front opening;a third loopstrap (20) engaged around one wire segment (76) of the faceguard that has at least a portion that is adjacent the crown (30) of the helmet shell at a top of the front opening;each loopstrap having a curved loop (50) for receiving the wire segment to hold the loopstrap to the faceguard, and first (52) and second (54) elongated straps extending parallel to each other and from the loop (50), the straps (52, 54) each containing an aperture (56) spaced from the wire segment that is received in the loop, the apertures being aligned with each other, the first strap (52) lying adjacent the helmet shell (12) and the second strap (54) being spaced from the helmet shell, each of the aligned apertures of one loopstrap being over and aligned with one of the holes (32) of the sides or crown of the helmet shell; anda fastener extending through each set of the aligned apertures and helmet shell hole for connecting the faceguard to the helmet shell;at least the fasteners extending through the loopstrap apertures and helmet shell hole of the opposite sides of the helmet shell comprising:a nut (72) extending from an inside of the helmet shell out into the hole and into at least the aperture of the first strap (52);a stud (70) removably connected to the nut and extending from an outside of the helmet shell, into the aperture of the second strap (54) and into the nut (72);partial turn means between the nut and the stud for locking the stud to the nut when the stud is rotated by less than one half a revolution of the stud about its axis;at least a portion of an outer surface of the nut being non-circular and being closely engaged to an inner surface of the aperture of the first strap which is also non-circular so that the nut will not rotate in the aperture of the first strap when the stud is rotated;wherein the stud comprises an axial shaft (71) and the nut comprises a barrel having an interior for receiving the shaft of the stud, the partial turn means comprising a locking pin (74) extending across the nut interior and the stud having a helically twisting and radially extending channel (73) that opens at a free end (75) of the shaft for receiving the locking pin and twists in a partial turn in the shaft in a first axial direction away from the free end of the shaft to a blind base (77) of the channel where the channel forms a seat for the locking pin (74) that extends in a second opposite axial direction, the tension spring urging the locking pin to remain in the blind base of the channel, the stud having an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, and the nut having a head (79) connected to the barrel for engaging the helmet shell around the hole to fix a position of the nut in the helmet shell hole, the stud head (78) having an outer surface opposite of the free end with at least one screw-driver engaging opening (80, 82) therein; anda tension spring (90) between the stud and the nut for urging the stud away from the nut when the stud is rotated to unlock the stud from the nut for facilitating a quick removal of the stud from the nut and a quick disconnection of the loopstrap and faceguard from the helmet shell; andwherein the tension spring comprises a stack of wave rings (92) having crests that are connected to each other. 2. The protective helmet of claim 1, wherein the partial turn means is a quarter turn means. 3. The protective helmet of claim 1, wherein the fasteners of all of the first, second and third loopstraps are of the same type. 4. The protective helmet of claim 1, wherein the fasteners of all of the loopstraps are of the same type, there being two third loopstraps for connecting the faceguard to the helmet shell at two spaced locations on the helmet crown. 5. The protective helmet of claim 1, wherein the non-circular portion of the nut and the non-circular aperture of the first strap are octagonal. 6. The protective helmet of claim 1, wherein the stud has a shaft extending into the nut and an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, the wave rings of the tension spring being engages engaged around the stud shaft near the stud head and against the second strap around the aperture in the second strap. 7. The protective helmet of claim 1, wherein the stud has a shaft extending into the nut and an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, the wave rings of the tension spring being engages engaged around the stud shaft near the stud head, the non-circular portion of the nut and the non-circular aperture of the first strap being octagonal. 8. The protective helmet of claim 1, wherein the stud comprises a shaft for extending into the nut and a head connected to the shaft, the second strap (54) of each loopstrap including a peripheral wall (57) around the aperture (56) for stiffening the second strap and for surrounding the head of the stud, the tension spring comprising the stack of connected wave rings engaged around the stud shaft near the head for engaging the second strap around the aperture and inside the peripheral wall. 9. The protective helmet of claim 1, wherein the stud comprises a shaft for extending into the nut and a head (78) connected to the shaft, the second strap (54) of each loopstrap including a U-shaped peripheral wall (57) around the aperture (56) for stiffening the second strap and for surrounding the head of the stud, the tension spring comprising the stack of connected wave rings engaged around the stud shaft near the head for engaging the second strap around the aperture and inside the peripheral wall, the second strap also including a stiffening partition (59) extending across the second strap near the loop (50) of the second strap and between legs of the U-shaped peripheral wall (57), the peripheral wall extending onto the loop, and a buttress (60) extending perpendicularly of the stiffening partition and parallel to and between the legs of the peripheral wall onto the loop for further stiffening the second strap, the stud head (78) having an outer surface opposite on the free end with at least one screw-driver engaging opening (80, 82) therein. 10. The protective helmet of claim 1, wherein the stud comprises an axial shaft (71) and the nut comprises a barrel having an interior for receiving the shaft of the stud, the partial turn means comprising a locking pin (74) extending across the nut interior and the stud having a helically twisting and radially extending channel (73) that opens at a free end (75) of the shaft for receiving the locking pin and twists in a partial turn in the shaft in a first axial direction away from the free end of the shaft to a blind base (77) of the channel where the channel forms a seat for the locking pin (74) that extends in a second opposite axial direction, the channel twisting by about 90 degrees so that a quarter turn locks the stud to the nut, the tension spring urging the locking pin to remain in the blind base of the channel, the stud having an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, and the nut having a head (79) connected to the barrel for engaging the helmet shell to fix a position of the nut in the helmet shell hole, the wave rings of the tension spring being engaged around the stud shaft near the stud head and the non-circular portion of the nut and the non-circular aperture of the first strap being octagonal, the second strap (54) of each loopstrap including a U-shaped peripheral wall (57) around the aperture (56) for stiffening the secondstrap and for surrounding the head of the stud, the tension spring comprising the stack of connected wave rings engaged around the stud shaft near the head for engaging the second strap around the aperture and inside the peripheral wall, the second strap also including a stiffening partition (59) extending across the second strap near the loop (50) of the second strap and between legs of the U-shaped peripheral wall (57), the peripheral wall extending onto the loop, and a buttress (60) extending perpendicularly of the stiffening partition and parallel to and between the legs of the peripheral wall onto the loop for further stiffening the second strap, the stud head (78) having an outer surface opposite of the free end with at least one screw-driver engaging opening (80, 82) therein. 11. A protective helmet, comprising: a helmet shell (12) having opposite sides (28) and a crown (30) with front edges defining a front opening for exposing the face of a wearer of the helmet, the opposite sides and the crown each containing a hole (32) through the helmet shell and adjacent the front opening;a faceguard (16) comprising a plurality of elongated wire segments (18) that are connected to each other, the faceguard extending across the opposite sides and downwardly from the crown of the helmet shell for covering at least a portion of the front opening;a first loopstrap (24) engaged around one wire segment (76) of the faceguard that has at least a portion that is adjacent one side (28) of the helmet shell (12) on one side of the front opening;a second loopstrap (25) engaged around one wire segment of the faceguard that is adjacent an opposite side of the helmet shell on an opposite side of the front opening;a third loopstrap (20) engaged around one wire segment (76) of the faceguard that has at least a portion that is adjacent the crown (30) of the helmet shell at a top of the front opening; each loopstrap having a curved loop (50) for receiving the wire segment to hold the loopstrap to the faceguard, and first (52) and second (54) elongated straps extending parallel to each other and from the loop (50), the straps (52, 54) each containing an aperture (56) spaced from the wire segment that is received in the loop, the apertures being aligned with each other, the first strap (52) lying adjacent the helmet shell (12) and the second strap (54) being spaced from the helmet shell, each of the aligned apertures of one loopstrap being over and aligned with one of the holes (32) of the sides or crown of the helmet shell; anda fastener extending through each set of the aligned apertures and helmet shell holes for connecting the faceguard to the helmet shell;at least the fasteners extending through the loopstrap apertures and helmet shell hole of the opposite sides of the helmet shell comprising:a nut (72) extending from an inside of the helmet shell out into the hole and into at least the aperture of the first strap (52);a stud (70) removably connected to the nut and extending from an outside of the helmet shell, into the aperture of the second strap (54) and into the nut (72);partial turn means between the nut and the stud for locking the stud to the nut when the stud is rotated by less than one half a revolution of the stud about its axis;at least a portion of an outer surface of the nut being non-circular and being closely engaged to an inner surface of the aperture of the first strap which is also non-circular so that the nut will not rotate in the aperture of the first strap when the stud is rotated; anda tension spring (90) between the stud and the nut for urging the stud away from the nut when the stud is rotated to unlock the stud from the nut for facilitating a quick removal of the stud from the nut and a quick disconnection of the loopstrap from the helmet shell; the partial turn means being a quarter turn means and the fasteners of all of the loopstraps being of the same type; each stud comprising an axial shaft (71) and the nut comprising a barrel having an interior for receiving the shaft of the stud; the quarter turn means comprising a locking pin (74) extending across the nut interior and the stud having a 90 degree helically twisting and radially extending channel (73) that opens at a free end (75) of the shaft for receiving the locking pin and twists in a partial turn in the shaft in a first axial direction away from the free end of the shaft to a blind base (77) of the channel where the channel forms a seat for the locking pin (74) that extends in a second opposite axial direction, the tension spring urging the locking pin to remain in the blind base of the channel, the stud having a shaft extending into the nut and an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, and the nut having a head (79) connected to the barrel for engaging the helmet shell to fix a position of the nut in the helmet shell hole, the stud head (78) having an outer surface opposite of the free end with at least one screw-driver engaging opening (80, 82) therein; andwherein the tension spring comprises a stack of wave rings having crests that are connected to each other. 12. The protective helmet of claim 11, wherein the stud has a shaft extending into the nut and an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, the wave rings of the tension spring being engages engaged around the stud shaft near the stud head. 13. The protective helmet of claim 11, wherein the stud has a shaft extending into the nut and an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, the rings of the tension spring being engaged around the stud shaft near the stud head, the non-circular portion of the nut and the non-circular aperture of the first strap being octagonal. 14. The protective helmet of claim 11, wherein the stud comprises a shaft for extending into the nut and a head connected to the shaft, the second strap (54) of each loopstrap including a peripheral wall (57) around the aperture (56) for stiffening the second strap and for surrounding the head of the stud, the tension spring comprising the stack of connected wave rings engaged around the stud shaft near the head for engaging the second strap around the aperture and inside the peripheral wall. 15. The protective helmet of claim 11, wherein the stud comprises a shaft for extending into the nut and a head (78) connected to the shaft, the second strap (54) of each loopstrap including a U-shaped peripheral wall (57) around the aperture (56) for stiffening the second strap and for surrounding the head of the stud, the tension spring comprising the stack of connected wave rings engages engaged around the stud shaft near the head for engaging the second strap around the aperture and inside the peripheral wall, the second strap also including a stiffening partition (59) extending across the second strap near the loop (50) of the second strap and between legs of the U-shaped peripheral wall (57), the peripheral wall extending onto the loop, and a buttress (60) extending perpendicularly of the stiffening partition and parallel to and between the legs of the peripheral wall onto the loop for further stiffening the second strap, the stud head (78) having an outer surface opposite of the free end with at least one screw-driver engaging opening (80, 82) therein. 16. A protective helmet, comprising: a helmet shell (12) having opposite sides (28) and a crown (30) with front edges defining a front opening for exposing the face of a wearer of the helmet, the opposite sides and the crown each containing a hole (32) through the helmet shell and adjacent the front opening;a faceguard (16) comprising a plurality of elongated wire segments (18) that are connected to each other, the faceguard extending across the opposite sides and downwardly from the crown of the helmet shell for covering at least a portion of the front opening;a first loopstrap (24) engaged around one wire segment (76) of the faceguard that has at least a portion that is adjacent one side (28) of the helmet shell (12) on one side of the front opening;a second loopstrap (25) engaged around one wire segment of the faceguard that is adjacent an opposite side of the helmet shell on an opposite side of the front opening;a third loopstrap (20) engaged around one wire segment (76) of the faceguard that has at least a portion that is adjacent the crown (30) of the helmet shell at a top of the front opening;each loopstrap having a curved loop (50) for receiving the wire segment to hold the loopstrap to the faceguard, and first (52) and second (54) elongated straps extending parallel to each other and from the loop (50), the straps (52, 54) each containing an aperture (56) spaced from the wire segment that is received in the loop, the apertures being aligned with each other, the first strap (52) lying adjacent the helmet shell (12) and the second strap (54) being spaced from the helmet shell, each of the aligned apertures of one loopstrap being over and aligned with one of the holes (32) of the sides or crown of the helmet shell; anda fastener extending through each set of the aligned apertures and helmet shell hole for connecting the faceguard to the helmet shell, the fasteners each comprising:a nut (72) extending into the hole;a stud (70) removably connected to the nut and extending at least into the aperture of the second strap (54) and into the nut (72);quarter turn means between the nut and the stud for locking the stud to the nut when the stud is rotated by less than one half a revolution of the stud about its axis;wherein the stud comprises an axial shaft (71) and the nut comprises a barrel having an interior for receiving the shaft of the stud, the quarter turn means comprising a locking pin (74) extending across the nut interior and the stud having a helically twisting and radially extending channel (73) that opens at a free end (75) of the shaft for receiving the locking pin and twists in a partial turn in the shaft in a first axial direction away from the free end of the shaft to a blind base (77) of the channel where the channel forms a seat for the locking pin (74) that extends in a second opposite axial direction, the channel twisting by about 90 degrees so that a quarter turn locks the stud to the nut,at least a portion of an outer surface of the nut being non-circular and being closely engaged to an inner surface of the aperture of the first strap which is also non-circular so that the nut will not rotate in the aperture of the first strap when the stud is rotated;a tension spring (90) between the stud and the nut for urging the stud away from the nut when the stud is rotated to unlock the stud from the nut for facilitating a quick removal of the stud from the nut and a quick disconnection of the loopstrap and faceguard from the helmet shell;the tension spring urging the locking pin to remain in the blind base of the channel, the stud having an enlarged head (78) connected to the shaft for engaging the second strap to fix a position of the stud in the aligned apertures of the loopstrap, and the nut having a head (79) connected to the barrel for engaging the helmet shell to fix a position of the nut in the helmet shell hole;the tension spring comprises a stack of wave rings having crests that are connected to each other, the wave rings of the tension spring being engaged around the shaft of the stud near the enlarged head of the stud and the non-circular portion of the nut and the non-circular aperture of the first strap being octagonal.