US20100050325A1 - Structure For adjusting inside Circumference of Helmet - Google Patents

Structure For adjusting inside Circumference of Helmet Download PDF

Info

Publication number
US20100050325A1
US20100050325A1 US12/202,375 US20237508A US2010050325A1 US 20100050325 A1 US20100050325 A1 US 20100050325A1 US 20237508 A US20237508 A US 20237508A US 2010050325 A1 US2010050325 A1 US 2010050325A1
Authority
US
United States
Prior art keywords
knob
cover
transmission gear
casing
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/202,375
Inventor
Tzu-Feng Wang-Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiann Lih Optical Co Ltd
Original Assignee
Jiann Lih Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiann Lih Optical Co Ltd filed Critical Jiann Lih Optical Co Ltd
Priority to US12/202,375 priority Critical patent/US20100050325A1/en
Assigned to JIANN LIH OPTICAL CO., LTD reassignment JIANN LIH OPTICAL CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WANG-LEE, TZU-FENG
Publication of US20100050325A1 publication Critical patent/US20100050325A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/10—Linings
    • A42B3/14—Suspension devices
    • A42B3/145—Size adjustment devices

Definitions

  • the present invention relates to a structure for adjusting an inside circumference of a helmet, and more particularly, to a strap assembly that is coupled to a safety helmet or a bicycle helmet and allows secure, flexible and rapid adjustment of a relative position of straps so as to match an inside circumference of the helmet with a user's head size.
  • a first conventional strap-adjusting structure includes a knob 10 , two straps 20 , a casing 30 , a cover 40 , a positioning gear 50 , a resilient element 503 , a transmission gear 504 and a washer 505 .
  • the knob 10 is placed into the casing 30 before the positioning gear 50 is put into the knob 10 , so that bevel teeth 501 on an outer side of the positioning gear 50 and teeth 502 on an outer periphery of the positioning gear 50 mesh respectively with bevel teeth 101 on an inner side of the knob 10 and projections 301 at an outer end of an inner periphery of the casing 30 .
  • the resilient element 503 and the washer 505 are sequentially put in place, wherein the washer 505 is located in a groove on an inner side of the casing 30 .
  • the two straps 20 are put in place in an overlapping manner and inserted by the transmission gear 504 , allowing a resilient fastener 102 at an inner end of the knob 10 to retain the transmission gear 504 .
  • the cover 40 is securely connected with the casing 30 , thereby completing the first conventional strap-adjusting structure.
  • a second conventional strap-adjusting structure is shown in FIGS. 2 and 3 and includes a knob 60 having an inner side annularly provided with bevel teeth 601 .
  • a gear 602 is protrudingly provided at a center of the bevel teeth 601 for meshing with teeth 901 alternately provided on an upper edge and a lower edge of slots formed respectively in two straps 90 , wherein the toothed slots jointly form a toothed groove.
  • a casing 70 has an outer side formed with an axle seat 701 at an appropriate position.
  • the axle seat 701 includes an outwardly extending engaging portion 702 provided bilaterally with projections 703 .
  • the engaging portion 702 can be fitted into the inner side of the knob 60 , so that the knob 60 is pivotable on the axle seat 701 while the projections 703 on the engaging portion 702 are engaged with the bevel teeth 601 on the inner side of the knob 60 .
  • a cover 80 is protrudingly provided with a resilient fastener 801 corresponding in position to a through hole 704 in the axle seat 701 of the casing 70 .
  • a central hole 603 of the knob 60 is retained by and pivotable on the resilient fastener 801 of the cover 80 .
  • the knob 60 , the casing 70 and the cover 80 are made of a plastic material. Therefore, a user only has to press and rotate the knob 60 for driving the projections 703 of the engaging portion 702 out of engagement with the bevel teeth 601 on the inner side of the knob 60 , while simultaneously driving the straps 90 meshed with the gear 602 of the knob 60 to move toward or away from each other, thereby adjusting a combined length of the straps 90 .
  • the present invention provides a novel configuration of a strap-adjusting assembly for use with a safety helmet or a bicycle helmet, with the hope that straps of a helmet can be conveniently and stably retained in place after strap length adjustment, so as to the secure the adjusted strap length.
  • a primary objective of the present invention is to provide a strap assembly coupled to a rear side of a safety helmet or a bicycle helmet.
  • a casing is bilaterally provided with apertures that allow two ends of a matching cover to be fitted therein.
  • the cover is centrally formed with a protruding section having a central hole and an inner periphery bilaterally provided with toothed portions.
  • a first driving portion on an inner side of a transmission gear can penetrate the hole of the cover so as to mesh with toothed portions alternately provided on an upper edge and a lower edge of slots formed respectively in two straps inserted into the apertures of the casing.
  • a tubular section centrally and protrudingly formed on the casing can penetrate a hole centrally formed in the transmission gear.
  • a second driving portion on an outer side of the transmission gear can be inserted into a resilient element and engaged with inner teeth centrally formed on a positioning gear.
  • the positioning gear has an outer periphery formed with teeth for meshing with the toothed portions on the inner periphery of the protruding section of the cover.
  • a knob penetrable by a threaded fastener and having an inner side formed with inner teeth is disposed adjacent to a side of the positioning gear, so that the threaded fastener passing through the knob is securely connected with the tubular section of the casing that penetrates the transmission gear.
  • the positioning gear By pressing the knob, the positioning gear is driven out of engagement with the toothed portions on the inner periphery of the protruding section of the cover, thereby allowing the knob to rotate an end of the transmission gear.
  • the first driving portion on the inner side of the transmission gear can drive the two straps inserted in the casing to move toward or away from each other in a predetermined manner.
  • the knob is released after a relative position of the straps is adjusted, so that the resilient element pushes the positioning gear outward to its original position, in which the positioning gear is engaged with and securely retained by the toothed portions on the inner periphery of the protruding section of the cover.
  • a secondary objective of the present invention is to provide the toothed portions on the inner periphery of the protruding section of the cover with chamfered inner edges, which are facing inward of the strap assembly, and to provide the teeth on the outer periphery of the positioning gear that mesh with the toothed portions on the inner periphery of the protruding section of the cover with chamfered outer edges, which are facing outward of the strap assembly, so that the positioning gear can be smoothly disengaged from or re-engaged with the toothed portions on the inner periphery of the protruding section of the cover.
  • a tertiary objective of the present invention is to provide the second driving portion on the outer side of the transmission gear with an unchamfered outer edge, which is facing outward of the strap assembly, and to provide the inner teeth on the inner side of the knob disposed adjacent to the side of the positioning gear with unchamfered inner edges, which are facing inward of the strap assembly, so that the second driving portion of the transmission gear cannot easily enter in between the inner teeth of the knob.
  • a relative position of the transmission gear and the two straps can be secured.
  • FIG. 1 is an exploded perspective view of a first conventional strap assembly
  • FIG. 2 is an exploded perspective view of a second conventional strap assembly
  • FIG. 3 is an exploded perspective view of the second conventional strap assembly from another viewing angle
  • FIG. 4 is a schematic drawing showing a strap assembly according to the present invention coupled to a helmet
  • FIG. 5 is an exploded perspective view of the strap assembly according to the present invention.
  • FIG. 6 is a plane view of the strap assembly according to the present invention.
  • FIG. 7 is a cross-sectional view taken along a line 70 - 70 in FIG. 6 ;
  • FIG. 8 is a cross-sectional top view of the strap assembly according to the present invention when not in operation.
  • FIG. 9 is a cross-sectional view taken along a line 90 - 90 in FIG. 8 .
  • a structure for adjusting an inside circumference of a helmet is implemented as a strap assembly 8 coupled to a rear side of a safety helmet or bicycle helmet 9 .
  • the strap assembly 8 comprises a casing 1 , a cover 2 , two straps 3 , a transmission gear 4 , a resilient element 5 , a positioning gear 6 , a knob 7 and a threaded fastener 73 .
  • the casing 1 is bilaterally provided with apertures 11 and is centrally and protrudingly formed with a tubular section 12 .
  • the casing 1 has an inner side connected with a pad 13 .
  • the cover 2 is a covering element shaped according to a width of the casing 1 and has two ends each formed as a reduced insertion end 21 . Moreover, the cover 2 is centrally formed with an outwardly extending protruding section 22 , which has a central through hole 24 and an inner periphery bilaterally provided with toothed portions 23 .
  • Each of the two straps 3 has one end formed with a slot 31 , wherein toothed portions 32 are provided alternately on an upper edge and a lower edge of one and the other of the slots 31 .
  • the transmission gear 4 has an inner side formed with a first driving portion 41 and an outer side formed with an outwardly extending second driving portion 43 , wherein the two sides are divided by a middle section formed with a flange 42 . Besides, the transmission gear 4 is centrally provided with a hole 44 .
  • the resilient element 5 can be inserted by the second driving portion 43 of the transmission gear 4 .
  • the positioning gear 6 has an inner side concavely formed with an accommodating space 61 for receiving an end of the resilient element 5 . Furthermore, the positioning gear 6 is centrally provided with inner teeth 62 for engaging with the second driving portion 43 of the transmission gear 4 .
  • the positioning gear 6 also has an outer periphery formed with teeth 63 , which can mesh with the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2 .
  • the knob 7 has an inner side formed with inner teeth 71 and an outer side formed with a through hole 72 for insertion by the threaded fastener 73 .
  • the insertion ends 21 at the two ends of the cover 2 are fitted into the apertures 11 bilaterally provided on the casing 1 .
  • the first driving portion 41 on the inner side of the transmission gear 4 is inserted into the hole 24 of the cover 2 , so as to mesh with the toothed portions 32 provided alternately on the upper edge and the lower edge of one and the other of the slots 31 of the two straps 3 , which are inserted into the apertures 11 formed bilaterally on the casing 1 , as shown in FIG. 6 .
  • the second driving portion 43 on the outer side of the transmission gear 4 is inserted into the resilient element 5 and engaged with the inner teeth 62 centrally formed on the positioning gear 6 , as shown in FIG. 8 .
  • the teeth 63 on the outer periphery of the positioning gear 6 mesh with the tooth portions 23 on the inner periphery of the protruding section 22 of the cover 2 , as shown in FIG. 9 .
  • the knob 7 is penetrated with the threaded fastener 73 and placed adjacent to a side of the positioning gear 6 , so that the threaded fastener 73 is securely connected with the tubular section 12 of the casing 1 that passes through the transmission gear 4 , thereby completing the strap assembly 8 shown in FIG. 4 .
  • the knob 7 when it is desired to adjust the strap assembly 8 so as to change a relative position of the straps 3 , the knob 7 is pressed to drive the positioning gear 6 out of engagement with the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2 , as shown in FIG. 7 . Then, the knob 7 is turned to rotate the second driving portion 43 of the transmission gear 4 , allowing the first driving portion 41 on the inner side of the transmission gear 4 to drive the two straps 3 inserted in the casing I to move toward or away from each other in a predetermined manner, as shown in FIG. 6 .
  • the knob 7 is released, allowing the resilient element 5 to push the positioning gear 6 outward to its original position, as shown in FIG. 8 , in which the positioning gear 6 once again meshes with and is retained by the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2 .
  • the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2 have inner edges formed with chamfers 231 , wherein the inner edges are facing inward of the strap assembly 8 .
  • the teeth 63 on the outer periphery of the positioning gear 6 that mesh with the toothed portions 23 have outer edges formed with chamfers 631 , wherein the outer edges are facing outward of the strap assembly 8 .
  • the positioning gear 6 can be smoothly disengaged from and re-engaged with the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2 .
  • the second driving portion 43 on the outer side of the transmission gear 4 has an unchamfered outer edge, which is facing outward of the strap assembly 8 , while the inner teeth 71 on the inner side of the knob 7 have unchamfered inner edges, which are facing inward of the strap assembly 8 , as shown in FIG. 8 , so that the second driving portion 43 of the transmission gear 4 cannot easily enter in between the inner teeth 71 of the knob 7 .
  • a relative position of the transmission gear 4 and the two straps 3 can be secured.

Abstract

A structure for adjusting inside circumference of a helmet is implemented as a strap assembly coupled to a rear side of a safety helmet or bicycle helmet and includes a casing and a cover fitted therein. The cover is sequentially connected with a transmission gear, a resilient element, a positioning gear and a knob. By pressing the knob, the positioning gear is disengaged from toothed portions on an inner periphery of the cover, thereby allowing the knob to rotate an end of the transmission gear. Consequently, a first driving portion of the transmission gear drives two straps inserted in the casing to move toward or away from each other. The knob is released after a relative position of the straps is adjusted. The resilient element returns the positioning gear into engagement with the toothed portions on the inner periphery of the cover.

Description

    BACKGROUND OF THE INVENTION
  • 1. Technical Field
  • The present invention relates to a structure for adjusting an inside circumference of a helmet, and more particularly, to a strap assembly that is coupled to a safety helmet or a bicycle helmet and allows secure, flexible and rapid adjustment of a relative position of straps so as to match an inside circumference of the helmet with a user's head size.
  • 2. Description of Related Art
  • Strap-adjusting assemblies of existing safety helmets come in a variety of configurations to adapt to different head shapes, and allow convenient adjustment of strap length. Two conventional strap assemblies for use with safety helmets are described below for example. Referring to FIG. 1, a first conventional strap-adjusting structure includes a knob 10, two straps 20, a casing 30, a cover 40, a positioning gear 50, a resilient element 503, a transmission gear 504 and a washer 505. During assembly of this strap-adjusting structure, the knob 10 is placed into the casing 30 before the positioning gear 50 is put into the knob 10, so that bevel teeth 501 on an outer side of the positioning gear 50 and teeth 502 on an outer periphery of the positioning gear 50 mesh respectively with bevel teeth 101 on an inner side of the knob 10 and projections 301 at an outer end of an inner periphery of the casing 30. Then, the resilient element 503 and the washer 505 are sequentially put in place, wherein the washer 505 is located in a groove on an inner side of the casing 30. Next, the two straps 20 are put in place in an overlapping manner and inserted by the transmission gear 504, allowing a resilient fastener 102 at an inner end of the knob 10 to retain the transmission gear 504. Finally, the cover 40 is securely connected with the casing 30, thereby completing the first conventional strap-adjusting structure.
  • A second conventional strap-adjusting structure is shown in FIGS. 2 and 3 and includes a knob 60 having an inner side annularly provided with bevel teeth 601. A gear 602 is protrudingly provided at a center of the bevel teeth 601 for meshing with teeth 901 alternately provided on an upper edge and a lower edge of slots formed respectively in two straps 90, wherein the toothed slots jointly form a toothed groove. In addition, a casing 70 has an outer side formed with an axle seat 701 at an appropriate position. The axle seat 701 includes an outwardly extending engaging portion 702 provided bilaterally with projections 703. The engaging portion 702 can be fitted into the inner side of the knob 60, so that the knob 60 is pivotable on the axle seat 701 while the projections 703 on the engaging portion 702 are engaged with the bevel teeth 601 on the inner side of the knob 60. A cover 80 is protrudingly provided with a resilient fastener 801 corresponding in position to a through hole 704 in the axle seat 701 of the casing 70. Thus, a central hole 603 of the knob 60 is retained by and pivotable on the resilient fastener 801 of the cover 80.
  • The knob 60, the casing 70 and the cover 80 are made of a plastic material. Therefore, a user only has to press and rotate the knob 60 for driving the projections 703 of the engaging portion 702 out of engagement with the bevel teeth 601 on the inner side of the knob 60, while simultaneously driving the straps 90 meshed with the gear 602 of the knob 60 to move toward or away from each other, thereby adjusting a combined length of the straps 90.
    • BRIEF SUMMARY OF THE INVENTION
  • The present invention provides a novel configuration of a strap-adjusting assembly for use with a safety helmet or a bicycle helmet, with the hope that straps of a helmet can be conveniently and stably retained in place after strap length adjustment, so as to the secure the adjusted strap length.
  • A primary objective of the present invention is to provide a strap assembly coupled to a rear side of a safety helmet or a bicycle helmet. Therein, a casing is bilaterally provided with apertures that allow two ends of a matching cover to be fitted therein. The cover is centrally formed with a protruding section having a central hole and an inner periphery bilaterally provided with toothed portions. A first driving portion on an inner side of a transmission gear can penetrate the hole of the cover so as to mesh with toothed portions alternately provided on an upper edge and a lower edge of slots formed respectively in two straps inserted into the apertures of the casing. A tubular section centrally and protrudingly formed on the casing can penetrate a hole centrally formed in the transmission gear. A second driving portion on an outer side of the transmission gear can be inserted into a resilient element and engaged with inner teeth centrally formed on a positioning gear. The positioning gear has an outer periphery formed with teeth for meshing with the toothed portions on the inner periphery of the protruding section of the cover. A knob penetrable by a threaded fastener and having an inner side formed with inner teeth is disposed adjacent to a side of the positioning gear, so that the threaded fastener passing through the knob is securely connected with the tubular section of the casing that penetrates the transmission gear. By pressing the knob, the positioning gear is driven out of engagement with the toothed portions on the inner periphery of the protruding section of the cover, thereby allowing the knob to rotate an end of the transmission gear. Thus, the first driving portion on the inner side of the transmission gear can drive the two straps inserted in the casing to move toward or away from each other in a predetermined manner. The knob is released after a relative position of the straps is adjusted, so that the resilient element pushes the positioning gear outward to its original position, in which the positioning gear is engaged with and securely retained by the toothed portions on the inner periphery of the protruding section of the cover.
  • A secondary objective of the present invention is to provide the toothed portions on the inner periphery of the protruding section of the cover with chamfered inner edges, which are facing inward of the strap assembly, and to provide the teeth on the outer periphery of the positioning gear that mesh with the toothed portions on the inner periphery of the protruding section of the cover with chamfered outer edges, which are facing outward of the strap assembly, so that the positioning gear can be smoothly disengaged from or re-engaged with the toothed portions on the inner periphery of the protruding section of the cover.
  • A tertiary objective of the present invention is to provide the second driving portion on the outer side of the transmission gear with an unchamfered outer edge, which is facing outward of the strap assembly, and to provide the inner teeth on the inner side of the knob disposed adjacent to the side of the positioning gear with unchamfered inner edges, which are facing inward of the strap assembly, so that the second driving portion of the transmission gear cannot easily enter in between the inner teeth of the knob. Thus, a relative position of the transmission gear and the two straps can be secured.
    • BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
  • The invention as well as a preferred mode of use, further objectives and advantages thereof will be best understood by referring to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings, wherein:
  • FIG. 1 is an exploded perspective view of a first conventional strap assembly;
  • FIG. 2 is an exploded perspective view of a second conventional strap assembly;
  • FIG. 3 is an exploded perspective view of the second conventional strap assembly from another viewing angle;
  • FIG. 4 is a schematic drawing showing a strap assembly according to the present invention coupled to a helmet;
  • FIG. 5 is an exploded perspective view of the strap assembly according to the present invention;
  • FIG. 6 is a plane view of the strap assembly according to the present invention;
  • FIG. 7 is a cross-sectional view taken along a line 70-70 in FIG. 6;
  • FIG. 8 is a cross-sectional top view of the strap assembly according to the present invention when not in operation; and
  • FIG. 9 is a cross-sectional view taken along a line 90-90 in FIG. 8.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIGS. 5 and 8, a structure for adjusting an inside circumference of a helmet is implemented as a strap assembly 8 coupled to a rear side of a safety helmet or bicycle helmet 9. The strap assembly 8 comprises a casing 1, a cover 2, two straps 3, a transmission gear 4, a resilient element 5, a positioning gear 6, a knob 7 and a threaded fastener 73.
  • The casing 1 is bilaterally provided with apertures 11 and is centrally and protrudingly formed with a tubular section 12. In addition, the casing 1 has an inner side connected with a pad 13.
  • The cover 2 is a covering element shaped according to a width of the casing 1 and has two ends each formed as a reduced insertion end 21. Moreover, the cover 2 is centrally formed with an outwardly extending protruding section 22, which has a central through hole 24 and an inner periphery bilaterally provided with toothed portions 23.
  • Each of the two straps 3 has one end formed with a slot 31, wherein toothed portions 32 are provided alternately on an upper edge and a lower edge of one and the other of the slots 31.
  • The transmission gear 4 has an inner side formed with a first driving portion 41 and an outer side formed with an outwardly extending second driving portion 43, wherein the two sides are divided by a middle section formed with a flange 42. Besides, the transmission gear 4 is centrally provided with a hole 44.
  • The resilient element 5 can be inserted by the second driving portion 43 of the transmission gear 4.
  • The positioning gear 6 has an inner side concavely formed with an accommodating space 61 for receiving an end of the resilient element 5. Furthermore, the positioning gear 6 is centrally provided with inner teeth 62 for engaging with the second driving portion 43 of the transmission gear 4. The positioning gear 6 also has an outer periphery formed with teeth 63, which can mesh with the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2.
  • The knob 7 has an inner side formed with inner teeth 71 and an outer side formed with a through hole 72 for insertion by the threaded fastener 73.
  • Referring to FIGS. 8 and 9, in order to assemble the casing 1, the cover 2, the two straps 3, the transmission gear 4, the resilient element 5, the positioning gear 6, the knob 7 and the threaded fastener 73, the insertion ends 21 at the two ends of the cover 2 are fitted into the apertures 11 bilaterally provided on the casing 1. The first driving portion 41 on the inner side of the transmission gear 4 is inserted into the hole 24 of the cover 2, so as to mesh with the toothed portions 32 provided alternately on the upper edge and the lower edge of one and the other of the slots 31 of the two straps 3, which are inserted into the apertures 11 formed bilaterally on the casing 1, as shown in FIG. 6. The second driving portion 43 on the outer side of the transmission gear 4 is inserted into the resilient element 5 and engaged with the inner teeth 62 centrally formed on the positioning gear 6, as shown in FIG. 8. Meanwhile, the teeth 63 on the outer periphery of the positioning gear 6 mesh with the tooth portions 23 on the inner periphery of the protruding section 22 of the cover 2, as shown in FIG. 9. Afterward, the knob 7 is penetrated with the threaded fastener 73 and placed adjacent to a side of the positioning gear 6, so that the threaded fastener 73 is securely connected with the tubular section 12 of the casing 1 that passes through the transmission gear 4, thereby completing the strap assembly 8 shown in FIG. 4.
  • Referring now to FIGS. 6 and 7, when it is desired to adjust the strap assembly 8 so as to change a relative position of the straps 3, the knob 7 is pressed to drive the positioning gear 6 out of engagement with the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2, as shown in FIG. 7. Then, the knob 7 is turned to rotate the second driving portion 43 of the transmission gear 4, allowing the first driving portion 41 on the inner side of the transmission gear 4 to drive the two straps 3 inserted in the casing I to move toward or away from each other in a predetermined manner, as shown in FIG. 6. After the relative position of the two straps 3 is adjusted, the knob 7 is released, allowing the resilient element 5 to push the positioning gear 6 outward to its original position, as shown in FIG. 8, in which the positioning gear 6 once again meshes with and is retained by the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2.
  • As shown in FIG. 7, the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2 have inner edges formed with chamfers 231, wherein the inner edges are facing inward of the strap assembly 8. Meanwhile, the teeth 63 on the outer periphery of the positioning gear 6 that mesh with the toothed portions 23 have outer edges formed with chamfers 631, wherein the outer edges are facing outward of the strap assembly 8. Thus, the positioning gear 6 can be smoothly disengaged from and re-engaged with the toothed portions 23 on the inner periphery of the protruding section 22 of the cover 2.
  • On the other hand, the second driving portion 43 on the outer side of the transmission gear 4 has an unchamfered outer edge, which is facing outward of the strap assembly 8, while the inner teeth 71 on the inner side of the knob 7 have unchamfered inner edges, which are facing inward of the strap assembly 8, as shown in FIG. 8, so that the second driving portion 43 of the transmission gear 4 cannot easily enter in between the inner teeth 71 of the knob 7. Thus, a relative position of the transmission gear 4 and the two straps 3 can be secured.

Claims (3)

1. A structure for adjusting an inside circumference of a helmet, implemented as a strap assembly coupled to a rear side of a safety helmet or a bicycle helmet and comprising a casing bilaterally provided with apertures which can be passed through by two straps, respectively, and be fitted in by two ends of a cover centrally formed with a hole, so that driving components and a knob for adjusting a relative position of the two straps can be assembled with the casing and the cover, the structure being characterized in:
the cover fitted in the casing being centrally formed with a protruding section having the hole and an inner periphery bilaterally provided with toothed portions, so that a first driving portion formed on an inner side of a transmission gear can penetrate the hole of the cover while a tubular section centrally and protrudingly formed on the casing can penetrate a hole centrally formed on the transmission gear;
the transmission gear further having an outer side formed with a second driving portion which can be inserted into a resilient element and engaged with a positioning gear centrally formed with inner teeth, wherein the positioning gear has an outer periphery formed with teeth which can mesh with the toothed portions on the inner periphery of the protruding section of the cover; and
the knob having an inner side formed with inner teeth and being penetrable by a threaded fastener, wherein the knob is disposed adjacent to a side of the positioning gear, so that the threaded fastener passing through the knob can be securely connected with the tubular section of the casing that passes through the transmission gear;
wherein the knob can be pressed to drive the positioning gear out of engagement with the toothed portions on the inner periphery of the protruding section of the cover, allowing an end of the transmission gear to be rotated by the knob, so that the first driving portion formed on the inner side of the transmission gear drives the two straps inserted in the casing to move toward or away from each other in a predetermined manner, and wherein the knob can be released after the relative position of the two straps is adjusted, allowing the resilient element to push the positioning gear outward to its original position, in which the positioning gear once again meshes with and is retained by the toothed portions on the inner periphery of the protruding section of the cover.
2. The structure for adjusting the inside circumference of the helmet as claimed in claim 1, wherein the toothed portions on the inner periphery of the protruding section of the cover have chamfered inner edges, which are facing inward of the strap assembly, while the teeth on the outer periphery of the positioning gear that mesh with the toothed portions on the inner periphery of the protruding section of the cover have chamfered outer edges, which are facing outward of the strap assembly, thereby allowing the positioning gear to be smoothly disengaged 15 from and reengaged with the toothed portions on the inner periphery of the protruding section of the cover.
3. The structure for adjusting the inside circumference of the helmet as claimed in claim 1, wherein the second driving portion on the outer side of the transmission gear has an unchamfered outer edge, which is facing outward of the strap assembly, while the inner teeth on the inner side of the knob have unchamfered inner edges, which are facing inward of the strap assembly, so that the second driving portion of the transmission gear cannot easily enter in between the inner teeth of the knob, thereby securing a relative position of the transmission gear and the two straps.
US12/202,375 2008-09-01 2008-09-01 Structure For adjusting inside Circumference of Helmet Abandoned US20100050325A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/202,375 US20100050325A1 (en) 2008-09-01 2008-09-01 Structure For adjusting inside Circumference of Helmet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/202,375 US20100050325A1 (en) 2008-09-01 2008-09-01 Structure For adjusting inside Circumference of Helmet

Publications (1)

Publication Number Publication Date
US20100050325A1 true US20100050325A1 (en) 2010-03-04

Family

ID=41723157

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/202,375 Abandoned US20100050325A1 (en) 2008-09-01 2008-09-01 Structure For adjusting inside Circumference of Helmet

Country Status (1)

Country Link
US (1) US20100050325A1 (en)

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100229286A1 (en) * 2007-10-10 2010-09-16 Lars-Olov Ahlgren Head Suspension Having Transition Arms and Rear Support
US20110088148A1 (en) * 2009-10-21 2011-04-21 Minson Enterprises Co., Ltd. Adjustable head band for a helmet
US20110112448A1 (en) * 2008-10-15 2011-05-12 Shenzhen Breo Technology Co., Ltd. Head massager and its helmet
EP2389823A1 (en) * 2010-05-27 2011-11-30 Zedel Safety helmet with improved adjustment
WO2012071802A1 (en) * 2010-11-29 2012-06-07 深圳市轻松科技股份有限公司 Adjustable helmet and head massager
US20120144565A1 (en) * 2010-12-13 2012-06-14 Otos Wing Co., Ltd. Head band
EP2457459A3 (en) * 2010-11-26 2012-08-15 Dräger Safety AG & Co. KGaA A protective helmet with a head-width adjusting device adjustable from the exterior
US20130105466A1 (en) * 2011-11-02 2013-05-02 Hakko Corporation Solder Handling Assembly
JP2013531147A (en) * 2010-07-13 2013-08-01 ファンナー・シュッツベクライドゥング・ゲーエムベーハー Interior structure for protective helmet
US20130219596A1 (en) * 2012-02-27 2013-08-29 Quality Manufacturing Hard hat suspension
US20140101828A1 (en) * 2012-10-11 2014-04-17 Honeywell International Inc. Protective headgear assembly
US20140188019A1 (en) * 2012-12-28 2014-07-03 Shenzhen Breo Technology Co., Ltd. Neck massager
US20150059066A1 (en) * 2013-08-30 2015-03-05 Mine Safety Appliances Company Suspension Connection Arrangement for a Suspension System of a Safety Helmet
US20150107006A1 (en) * 2013-10-21 2015-04-23 Minson Enterprises Co., Ltd. Adjustable headband device for a helmet
CN104984483A (en) * 2015-07-23 2015-10-21 武汉海纳川科技有限公司 Adjustable helmet and helmet type therapeutic apparatus
US20150359676A1 (en) * 2014-06-16 2015-12-17 Illinois Tool Works, Inc. Headgear for protective headwear
WO2016005604A1 (en) 2014-07-11 2016-01-14 Sennheiser Electronic Gmbh & Co. Kg Headphone unit or hearing protection with a headband
KR101605186B1 (en) 2014-12-16 2016-03-21 주식회사 동명 Head band adjusting apparatus and safety cap equipping thereof
WO2016041434A1 (en) * 2014-09-17 2016-03-24 深圳市倍轻松科技股份有限公司 Adjustable helmet and helmet massager
USD767829S1 (en) * 2015-02-04 2016-09-27 Tecmen Electronics Co., Ltd. Belt for welding helmet
US20170006949A1 (en) * 2015-07-09 2017-01-12 Sunday Afternoons, Inc. Sizing mechanism for headwear
US20170238643A1 (en) * 2016-02-23 2017-08-24 A.C.E. International Head Gear
US9814622B2 (en) 2015-06-12 2017-11-14 Illinois Tool Works Inc. Bump cap for face protection members
USD803486S1 (en) 2016-05-20 2017-11-21 Illinois Tool Works Inc. Protective helmet
USD804107S1 (en) 2016-05-20 2017-11-28 Illinois Tool Works Inc. Protective helmet
US20180042774A1 (en) * 2016-08-10 2018-02-15 Tecmen Electronics Co., Ltd. Headband arrangement and welding helmet equipped with the same
US9999546B2 (en) 2014-06-16 2018-06-19 Illinois Tool Works Inc. Protective headwear with airflow
CN108837325A (en) * 2018-07-02 2018-11-20 湖北益健堂科技股份有限公司 Adjustable cervical therapeutic equipment
CN109380817A (en) * 2017-08-02 2019-02-26 宏碁股份有限公司 Frenulum adjusts structure
US10365494B2 (en) * 2017-06-20 2019-07-30 Acer Incorporated Adjustment structure of a bridle
US10390582B2 (en) 2014-12-05 2019-08-27 Two Guys And A Hat Inc. Protective headgear
US10670870B2 (en) * 2018-08-31 2020-06-02 Starvr Corporation Head-mounted display
US10702003B2 (en) 2014-12-26 2020-07-07 Illinois Tool Works Inc. Apparatus for reducing angular velocity of protective shells associated with protective headwear
US11033433B2 (en) 2014-06-16 2021-06-15 Illinois Tool Works Inc Removable shield for protective headwear
US11058586B2 (en) 2015-06-12 2021-07-13 Illinois Tool Works Inc. Hard hat adapter for a welding face member
US20210219647A1 (en) * 2020-01-20 2021-07-22 Honeywell International Inc. Ratchet mechanism for head protection device
US11147333B2 (en) * 2016-08-10 2021-10-19 Tecmen Electronics Co., Ltd. Headband arrangement and welding helmet equipped with the same
US11163333B2 (en) * 2019-03-29 2021-11-02 Htc Corporation Head-mounted display
EP3903617A1 (en) 2020-04-30 2021-11-03 Dräger Safety AG & Co. KGaA Protective helmet with telescopically adjustable head width
DE102020002610A1 (en) 2020-04-30 2021-11-04 Dräger Safety AG & Co. KGaA Protective helmet with a telescopic head width adjustment
DE102020002617A1 (en) 2020-04-30 2021-11-04 Dräger Safety AG & Co. KGaA Safety helmet with a multi-part actuation unit for adjusting the head width
US11166513B2 (en) * 2018-10-19 2021-11-09 E.D. Bullard Company Ratchet mechanism for protective helmet headband
US20220039499A1 (en) * 2020-08-07 2022-02-10 Sata Gmbh & Co. Kg Skull mounting system for headgear and headgear with skull mounting system
US11419391B2 (en) * 2017-09-15 2022-08-23 Hangzhou Amphenol Phoenix Telecom Parts Co., Ltd. Length adjuster on wearable device
USD1000714S1 (en) * 2021-04-20 2023-10-03 Lincoln Global, Inc. Headgear of a helmet
US11793260B2 (en) 2020-08-07 2023-10-24 Sata Gmbh & Co. Kg Skull mounting system for headgear, respiratory hood with headgear and method for fastening of headgear
US11969043B2 (en) * 2020-08-07 2024-04-30 Sata Gmbh & Co. Kg Skull mounting system for headgear and headgear with skull mounting system

Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205742A (en) * 1938-04-02 1940-06-25 Frederick M Bowers Adjustable headband
US2511234A (en) * 1945-05-11 1950-06-13 Sellstrom Mfg Company Adjustable headband
US2926406A (en) * 1959-03-27 1960-03-01 Edwards George Zahnor Length adjustment mechanism
US3214809A (en) * 1963-12-20 1965-11-02 Kedman Company Length adjustment mechanism
US4548531A (en) * 1983-05-03 1985-10-22 United Technologies Corporation Method for chamfering the edges of gear teeth
US4942628A (en) * 1989-09-20 1990-07-24 Mine Safety Appliances Company Helmet suspension having ratchet adjustment
US5509333A (en) * 1993-01-28 1996-04-23 Rion; John D. Low profile ratchet adapter
US5950245A (en) * 1997-04-14 1999-09-14 Mine Safety Appliances Company Adjustable headband with a ratchet mechanism having different resistances
US6314588B1 (en) * 2001-01-03 2001-11-13 Kuo-Yun Fang Ring band adjustment structure of crash helmet
US6571475B1 (en) * 1999-04-09 2003-06-03 Samputensili S.P.A. Method of chamfering and deburring gear teeth, device implementing such a method, and relative tool
US20040060154A1 (en) * 2002-10-01 2004-04-01 North Safety Products Limited Length adjustment mechanism for a strap
US6939093B2 (en) * 2002-12-05 2005-09-06 Joseph L. Arvin Chamfer hob and method of use thereof
US20060015986A1 (en) * 2004-07-26 2006-01-26 Eric Bielefeld Flexible ratchet mechanism for the headband of protective headgear
US7043772B2 (en) * 2004-08-31 2006-05-16 E. D. Bullard Company Ratchet mechanism with unitary knob and pinion construction
US7174575B1 (en) * 2004-07-26 2007-02-13 E.D. Bullard Company Ratchet mechanism for the headband of protective headgear used in high temperature environments
US20080109947A1 (en) * 2006-11-01 2008-05-15 Lucie Dubois Adjustable locking mechanism for protective head gear
US20080184451A1 (en) * 2007-02-01 2008-08-07 Lemke Kenneth P Protective Headgear Assembly
US20080276354A1 (en) * 2007-05-08 2008-11-13 Stokes Peter L Helmet adjustment system
US20080295229A1 (en) * 2007-05-30 2008-12-04 Kenneth Fang Adjustable fitting ring structure
US20090031482A1 (en) * 2007-05-08 2009-02-05 Warrior Sports, Inc. Helmet adjustment system
US20090133180A1 (en) * 2005-12-01 2009-05-28 Shinnosuke Morita Sheet Processing Apparatus and Process of Producing Sheet
US20100113991A1 (en) * 2007-04-13 2010-05-06 Xu Liang Wu Head massager and distance adjustment device thereof

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205742A (en) * 1938-04-02 1940-06-25 Frederick M Bowers Adjustable headband
US2511234A (en) * 1945-05-11 1950-06-13 Sellstrom Mfg Company Adjustable headband
US2926406A (en) * 1959-03-27 1960-03-01 Edwards George Zahnor Length adjustment mechanism
US3214809A (en) * 1963-12-20 1965-11-02 Kedman Company Length adjustment mechanism
US4548531A (en) * 1983-05-03 1985-10-22 United Technologies Corporation Method for chamfering the edges of gear teeth
US4942628A (en) * 1989-09-20 1990-07-24 Mine Safety Appliances Company Helmet suspension having ratchet adjustment
US5509333A (en) * 1993-01-28 1996-04-23 Rion; John D. Low profile ratchet adapter
US5950245A (en) * 1997-04-14 1999-09-14 Mine Safety Appliances Company Adjustable headband with a ratchet mechanism having different resistances
US6571475B1 (en) * 1999-04-09 2003-06-03 Samputensili S.P.A. Method of chamfering and deburring gear teeth, device implementing such a method, and relative tool
US6314588B1 (en) * 2001-01-03 2001-11-13 Kuo-Yun Fang Ring band adjustment structure of crash helmet
US20040060154A1 (en) * 2002-10-01 2004-04-01 North Safety Products Limited Length adjustment mechanism for a strap
US6939093B2 (en) * 2002-12-05 2005-09-06 Joseph L. Arvin Chamfer hob and method of use thereof
US20060015986A1 (en) * 2004-07-26 2006-01-26 Eric Bielefeld Flexible ratchet mechanism for the headband of protective headgear
US7174575B1 (en) * 2004-07-26 2007-02-13 E.D. Bullard Company Ratchet mechanism for the headband of protective headgear used in high temperature environments
US7043772B2 (en) * 2004-08-31 2006-05-16 E. D. Bullard Company Ratchet mechanism with unitary knob and pinion construction
US20090133180A1 (en) * 2005-12-01 2009-05-28 Shinnosuke Morita Sheet Processing Apparatus and Process of Producing Sheet
US20080109947A1 (en) * 2006-11-01 2008-05-15 Lucie Dubois Adjustable locking mechanism for protective head gear
US20080184451A1 (en) * 2007-02-01 2008-08-07 Lemke Kenneth P Protective Headgear Assembly
US20100113991A1 (en) * 2007-04-13 2010-05-06 Xu Liang Wu Head massager and distance adjustment device thereof
US20080276354A1 (en) * 2007-05-08 2008-11-13 Stokes Peter L Helmet adjustment system
US20090031482A1 (en) * 2007-05-08 2009-02-05 Warrior Sports, Inc. Helmet adjustment system
US20080295229A1 (en) * 2007-05-30 2008-12-04 Kenneth Fang Adjustable fitting ring structure

Cited By (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100229286A1 (en) * 2007-10-10 2010-09-16 Lars-Olov Ahlgren Head Suspension Having Transition Arms and Rear Support
US9066552B2 (en) 2007-10-10 2015-06-30 3M Innovative Properties Company Head suspension having transition arms and rear support
US10709192B2 (en) 2007-10-10 2020-07-14 3M Innovative Properties Company Head suspension having transition arms and rear support
US8745770B2 (en) * 2007-10-10 2014-06-10 3M Innovative Properties Company Head suspension having transition arms and rear support
US20110112448A1 (en) * 2008-10-15 2011-05-12 Shenzhen Breo Technology Co., Ltd. Head massager and its helmet
US8740827B2 (en) * 2008-10-15 2014-06-03 Shenzhen Breo Technology Co., Ltd. Head massager and its helmet
US20110088148A1 (en) * 2009-10-21 2011-04-21 Minson Enterprises Co., Ltd. Adjustable head band for a helmet
US8370967B2 (en) * 2009-10-21 2013-02-12 Minson Enterprises Co., Ltd. Adjustable head band for a helmet
EP2389823A1 (en) * 2010-05-27 2011-11-30 Zedel Safety helmet with improved adjustment
FR2960388A1 (en) * 2010-05-27 2011-12-02 Zedel SAFETY HELMET WITH PERFECTIONAL ADJUSTMENT
US8856974B2 (en) 2010-05-27 2014-10-14 Zedel Safety helmet with improved adjustment
JP2013531147A (en) * 2010-07-13 2013-08-01 ファンナー・シュッツベクライドゥング・ゲーエムベーハー Interior structure for protective helmet
EP2457459A3 (en) * 2010-11-26 2012-08-15 Dräger Safety AG & Co. KGaA A protective helmet with a head-width adjusting device adjustable from the exterior
WO2012071802A1 (en) * 2010-11-29 2012-06-07 深圳市轻松科技股份有限公司 Adjustable helmet and head massager
US9380824B2 (en) 2010-11-29 2016-07-05 Shenzhen Breo Technology Co., Ltd. Adjustable helmet and head massager
US8875318B2 (en) * 2010-12-13 2014-11-04 Otos Wing Co., Ltd. Head band
US20120144565A1 (en) * 2010-12-13 2012-06-14 Otos Wing Co., Ltd. Head band
US9314863B2 (en) * 2011-11-02 2016-04-19 Hakko Corporation Solder handling assembly
US20130105466A1 (en) * 2011-11-02 2013-05-02 Hakko Corporation Solder Handling Assembly
US20130219596A1 (en) * 2012-02-27 2013-08-29 Quality Manufacturing Hard hat suspension
US20140101828A1 (en) * 2012-10-11 2014-04-17 Honeywell International Inc. Protective headgear assembly
US9554610B2 (en) * 2012-10-11 2017-01-31 Honeywell International, Inc. Protective headgear assembly
US20140188019A1 (en) * 2012-12-28 2014-07-03 Shenzhen Breo Technology Co., Ltd. Neck massager
US20150059066A1 (en) * 2013-08-30 2015-03-05 Mine Safety Appliances Company Suspension Connection Arrangement for a Suspension System of a Safety Helmet
US9949522B2 (en) * 2013-08-30 2018-04-24 Msa Technology, Llc Suspension connection arrangement for a suspension system of a safety helmet
US9161588B2 (en) * 2013-10-21 2015-10-20 Minson Enterprises Co., Ltd. Adjustable headband device for a helmet
US20150107006A1 (en) * 2013-10-21 2015-04-23 Minson Enterprises Co., Ltd. Adjustable headband device for a helmet
US10681953B2 (en) 2014-06-16 2020-06-16 Illinois Tool Works Inc. Headgear for protective headwear
US9999546B2 (en) 2014-06-16 2018-06-19 Illinois Tool Works Inc. Protective headwear with airflow
US11033433B2 (en) 2014-06-16 2021-06-15 Illinois Tool Works Inc Removable shield for protective headwear
US20150359676A1 (en) * 2014-06-16 2015-12-17 Illinois Tool Works, Inc. Headgear for protective headwear
US10299530B2 (en) * 2014-06-16 2019-05-28 Illinois Tool Works Inc. Headgear for protective headwear
US10098403B2 (en) 2014-06-16 2018-10-16 Illinois Tool Works Inc. Headgear for protective headwear
US20180271200A1 (en) * 2014-06-16 2018-09-27 Illinois Tool Works, Inc. Headgear for protective headwear
US10034510B2 (en) 2014-06-16 2018-07-31 Illinois Tool Works Inc. Headgear for protective headwear
US10016008B2 (en) 2014-06-16 2018-07-10 Illinois Tool Works Inc. Headgear for protective headwear
DE102014213534A1 (en) * 2014-07-11 2016-01-14 Sennheiser Electronic Gmbh & Co. Kg Earpiece or ear protection with a headband
WO2016005604A1 (en) 2014-07-11 2016-01-14 Sennheiser Electronic Gmbh & Co. Kg Headphone unit or hearing protection with a headband
WO2016041434A1 (en) * 2014-09-17 2016-03-24 深圳市倍轻松科技股份有限公司 Adjustable helmet and helmet massager
US10390582B2 (en) 2014-12-05 2019-08-27 Two Guys And A Hat Inc. Protective headgear
KR101605186B1 (en) 2014-12-16 2016-03-21 주식회사 동명 Head band adjusting apparatus and safety cap equipping thereof
US10702003B2 (en) 2014-12-26 2020-07-07 Illinois Tool Works Inc. Apparatus for reducing angular velocity of protective shells associated with protective headwear
USD767829S1 (en) * 2015-02-04 2016-09-27 Tecmen Electronics Co., Ltd. Belt for welding helmet
US9814622B2 (en) 2015-06-12 2017-11-14 Illinois Tool Works Inc. Bump cap for face protection members
US11058586B2 (en) 2015-06-12 2021-07-13 Illinois Tool Works Inc. Hard hat adapter for a welding face member
US20170006949A1 (en) * 2015-07-09 2017-01-12 Sunday Afternoons, Inc. Sizing mechanism for headwear
CN104984483A (en) * 2015-07-23 2015-10-21 武汉海纳川科技有限公司 Adjustable helmet and helmet type therapeutic apparatus
US20170238643A1 (en) * 2016-02-23 2017-08-24 A.C.E. International Head Gear
USD803486S1 (en) 2016-05-20 2017-11-21 Illinois Tool Works Inc. Protective helmet
USD804107S1 (en) 2016-05-20 2017-11-28 Illinois Tool Works Inc. Protective helmet
US11147333B2 (en) * 2016-08-10 2021-10-19 Tecmen Electronics Co., Ltd. Headband arrangement and welding helmet equipped with the same
US20180042774A1 (en) * 2016-08-10 2018-02-15 Tecmen Electronics Co., Ltd. Headband arrangement and welding helmet equipped with the same
US10729202B2 (en) * 2016-08-10 2020-08-04 Tecmen Electronics Co., Ltd. Headband arrangement and welding helmet equipped with the same
US10365494B2 (en) * 2017-06-20 2019-07-30 Acer Incorporated Adjustment structure of a bridle
CN109380817A (en) * 2017-08-02 2019-02-26 宏碁股份有限公司 Frenulum adjusts structure
US11419391B2 (en) * 2017-09-15 2022-08-23 Hangzhou Amphenol Phoenix Telecom Parts Co., Ltd. Length adjuster on wearable device
CN108837325A (en) * 2018-07-02 2018-11-20 湖北益健堂科技股份有限公司 Adjustable cervical therapeutic equipment
US10670870B2 (en) * 2018-08-31 2020-06-02 Starvr Corporation Head-mounted display
US11166513B2 (en) * 2018-10-19 2021-11-09 E.D. Bullard Company Ratchet mechanism for protective helmet headband
US11163333B2 (en) * 2019-03-29 2021-11-02 Htc Corporation Head-mounted display
US20210219647A1 (en) * 2020-01-20 2021-07-22 Honeywell International Inc. Ratchet mechanism for head protection device
US11712082B2 (en) * 2020-01-20 2023-08-01 Honeywell International Inc. Ratchet mechanism for head protection device
DE102020002610A1 (en) 2020-04-30 2021-11-04 Dräger Safety AG & Co. KGaA Protective helmet with a telescopic head width adjustment
DE102020002617A1 (en) 2020-04-30 2021-11-04 Dräger Safety AG & Co. KGaA Safety helmet with a multi-part actuation unit for adjusting the head width
EP3903617A1 (en) 2020-04-30 2021-11-03 Dräger Safety AG & Co. KGaA Protective helmet with telescopically adjustable head width
US11707103B2 (en) 2020-04-30 2023-07-25 Dräger Safety AG & Co. KGaA Safety helmet with telescopically adjustable head size
US20220039499A1 (en) * 2020-08-07 2022-02-10 Sata Gmbh & Co. Kg Skull mounting system for headgear and headgear with skull mounting system
US11793260B2 (en) 2020-08-07 2023-10-24 Sata Gmbh & Co. Kg Skull mounting system for headgear, respiratory hood with headgear and method for fastening of headgear
US11969043B2 (en) * 2020-08-07 2024-04-30 Sata Gmbh & Co. Kg Skull mounting system for headgear and headgear with skull mounting system
USD1000714S1 (en) * 2021-04-20 2023-10-03 Lincoln Global, Inc. Headgear of a helmet

Similar Documents

Publication Publication Date Title
US20100050325A1 (en) Structure For adjusting inside Circumference of Helmet
US8370967B2 (en) Adjustable head band for a helmet
US6314588B1 (en) Ring band adjustment structure of crash helmet
US5950245A (en) Adjustable headband with a ratchet mechanism having different resistances
US7445195B1 (en) Pulley
US7124664B1 (en) Ratchet wrench
US7669298B2 (en) Buckle assembly
US20080172848A1 (en) Shoelace fastening assembly
US20130239375A1 (en) Ratchet buckle for helmets
US20110219523A1 (en) Swimming goggles
US7066054B2 (en) Ratchet wrench
WO2018036074A1 (en) Sliding-type locking buckle
US6691378B1 (en) Buckle device for a pair of swimming/diving goggles
KR101674630B1 (en) Fitting device for helmet
CN109445110B (en) Electronic device
KR100450890B1 (en) Grit of cooking vessel
TWI430759B (en) Adjust the buckle
US6874391B2 (en) One-way ratchet wrench
US8899826B2 (en) Encased timepiece
TWM638514U (en) Work cap and chinstrap unit
TWI728919B (en) Hat band adjustment structure
KR102279908B1 (en) Device for adjusting headband length of hard hat
CN114063293A (en) Head-mounted glasses device and binding band adjusting mechanism thereof
CN213606649U (en) Pressurization tourniquet
KR200288001Y1 (en) Grit of cooking vessel

Legal Events

Date Code Title Description
AS Assignment

Owner name: JIANN LIH OPTICAL CO., LTD,TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WANG-LEE, TZU-FENG;REEL/FRAME:021466/0175

Effective date: 20080806

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION