초록 ▼

The present invention is a safety braking system for a hand-pushed rollator, which allows the user to engage different operation modes: a park mode, a walk mode, and a brake mode. The present invention comprises a wheel mechanism, a cable assembly, and a handlebar mechanism. The wheel mechanism allo

The present invention is a safety braking system for a hand-pushed rollator, which allows the user to engage different operation modes: a park mode, a walk mode, and a brake mode. The present invention comprises a wheel mechanism, a cable assembly, and a handlebar mechanism. The wheel mechanism allows a wheel to rotate during walk mode, to engage the wheel with a parking brake during park mode, and to engage the wheel with a friction brake during brake mode. The wheel mechanism pivots the parking brake and the friction brake on a lever in order to switch between the different operation modes. The handlebar mechanism allows the user to shift between the different operation modes and is engaged to the wheel mechanism through the cable assembly. The handlebar mechanism uses two levers that are pushed and pulled by the user in order to shift between the different operation modes.

대표청구항 ▼

1. A safety braking system for a hand-pushed rollator comprises, a wheel mechanism;a cable assembly;a handle bar mechanism;said wheel mechanism comprises a wheel, a plurality of wheel teeth, a frame, an extension, an axle, an axle nut, a brake arm, an arm pin, an arm nut, a plurality of arm teeth, a

1. A safety braking system for a hand-pushed rollator comprises, a wheel mechanism;a cable assembly;a handle bar mechanism;said wheel mechanism comprises a wheel, a plurality of wheel teeth, a frame, an extension, an axle, an axle nut, a brake arm, an arm pin, an arm nut, a plurality of arm teeth, a friction brake, a tire, a brake system return spring, a stop, and a cable retainer;said cable assembly comprises a first cable ferrule, a second cable ferrule, a cable wire, and a cable housing;said handle bar mechanism comprises a lever housing, a handlebar, a screw, a lower lever, a pivot fastener, a grip, an upper lever, a switch, a lower lever stop, an upper lever spring, an upper lever stop, and a pair of lever pins;said frame being positioned adjacent to said wheel;said axle being perpendicularly connected to said frame;said wheel being rotatably attached to said axle with said axle nut;said arm pin being positioned above said wheel and being perpendicularly connected to said frame;said brake arm being pivotally attached to said arm pin with said arm nut;said extension being positioned above said brake arm and being connected to said frame;said lever housing being perpendicularly traversed through by said handlebar;said lever housing being attached to said handlebar with said screw;said handlebar being encircled and attached to said grip;said grip being positioned adjacent to said lever housing along said handlebar;said lower lever being inserted into by said lever housing;said lower lever being pivotally attached to said lever housing by said pivot fastener;said lower lever stop jutting out of said lever housing opposite to said lower lever and adjacent to said handlebar;said lower lever stop being connected adjacent to said lower lever within said lever housing;said upper lever being positioned around said handlebar and said lever housing;said upper lever being pivotally attached to said handlebar and said lever housing with said pair of lever pins;said upper lever spring being attached to said upper lever and said lever housing;said switch being positioned along said handlebar;said switch being connected adjacent to said upper lever;said upper lever stop being connected to said upper lever opposite to said switch; andsaid lower lever stop being positioned adjacent to said upper lever stop; and said plurality of arm teeth being perpendicularly connected to said brake arm adjacent to said arm pin. 2. The safety braking system for a hand-pushed rollator as claimed in claim 1 comprises, said plurality of wheel teeth being radially positioned around said axle and being perpendicularly connected to said wheel adjacent to said frame;said wheel being encircled by and attached to said tire;said stop being perpendicularly connected to said brake arm adjacent to said plurality of arm teeth; andsaid friction brake being perpendicularly connected to said brake arm and being positioned adjacent to said arm pin opposite of said plurality of arm teeth. 3. The safety braking system for a hand-pushed rollator as claimed in claim 2 comprises, said plurality of arm teeth being positioned adjacent to said plurality of wheel teeth;said friction brake being positioned adjacent to said tire;said brake system return spring being attached to said brake arm adjacent to friction brake;said extension being attached to said brake system return spring opposite of said brake arm;said first cable ferrule being connected and positioned on said extension opposite said brake system return spring; andsaid first cable ferrule being traversed through by said cable wire and being attached to said brake arm adjacent to said plurality of arm teeth with said cable retainer. 4. The safety braking system for a hand-pushed rollator as claimed in claim 1 comprises, said second cable ferrule being connected to said lever housing opposite to said lower lever;said second cable ferrule being traversed through by said cable wire;said lever housing being traversed into by said cable wire; andsaid cable wire being attached to said lower lever. 5. The safety braking system for a hand-pushed rollator as claimed in claim 1 comprises, said cable wire being encircled by said cable housing between said first cable ferrule and said second cable ferrule. 6. A safety braking system for a hand-pushed rollator comprises, a wheel mechanism;a cable assembly;a handle bar mechanism;said wheel mechanism comprises a wheel, a rim, a plurality of wheel teeth, a frame, an extension, an axle, an axle nut, a brake arm, a plurality of arm teeth, a friction brake, a tire, and a brake system return spring;said cable assembly comprises a first cable ferrule, a second cable ferrule, a cable wire, and a cable housing;said handle bar mechanism comprises a lever housing, a handlebar, a screw, a lower lever, a pivot fastener, a grip, an upper lever, a switch, a lower lever stop, an upper lever spring, an upper lever stop, and a pair of lever pins;said lever housing being perpendicularly traversed through by said handlebar;said lever housing being attached to said handlebar with said screw;said handlebar being encircled and attached to said grip; andsaid grip being positioned adjacent to said lever housing along said handlebar; and said friction brake and said plurality of arm teeth being perpendicularly connected to said brake arm. 7. The safety braking system for a hand-pushed rollator as claimed in claim 6 comprises, said plurality of wheel teeth being radially positioned around said axle;said plurality of wheel teeth being encircled by said rim;said rim being encircled by and attached to said tire;said wheel being connected adjacent to said plurality of wheel teeth and to said rim;said frame being positioned adjacent to said plurality of wheel teeth and said rim opposite to said wheel;said axle being perpendicularly connected to said frame;said wheel being rotatably attached to said axle with said axle nut;said frame being encircled by said brake arm adjacent to said axle;said frame being encircled by said brake system return spring;said brake system return spring being positioned adjacent to said brake arm opposite of said axle;said frame being encircled and connected to said extension;said extension being positioned adjacent to said brake system return spring opposite of said brake arm;said friction brake being positioned in between said rim and said plurality of wheel teeth;said plurality of arm teeth being connected to said friction brake adjacent to said plurality of wheel teeth;said first cable ferrule being connected to said brake arm; andsaid cable wire being traversing through said first cable ferrule and being connected to said brake arm. 8. The safety braking system for a hand-pushed rollator as claimed in claim 6 comprises, said lower lever being inserted into by said lever housing;said lower lever being pivotally attached to said lever housing by said pivot fastener;said lower lever stop jutting out of said lever housing opposite to said lower lever and adjacent to said handlebar; andsaid lower lever stop being connected adjacent to said lower lever within said lever housing. 9. The safety braking system for a hand-pushed rollator as claimed in claim 8 comprises, said upper lever being positioned around said handlebar and said lever housing;said upper lever being pivotally attached to said handlebar and said lever housing with said pair of lever pins;said upper lever spring being attached to said upper lever and said lever housing;said switch being positioned along said handlebar;said switch being connected adjacent to said upper lever;said upper lever stop being connected to said upper lever opposite to said switch; andsaid lower lever stop being positioned adjacent to said upper lever stop. 10. The safety braking system for a hand-pushed rollator as claimed in claim 8 comprises, said second cable ferrule being connected to said lever housing opposite to said lower lever;said second cable ferrule being traversed through by said cable wire;said lever housing being traversed into by said cable wire; andsaid cable wire being attached to said lower lever. 11. The safety braking system for a hand-pushed rollator as claimed in claim 6 comprises, said cable wire being encircled by said cable housing between said first cable ferrule and said second cable ferrule. 12. A safety braking system for a hand-pushed rollator comprises, a wheel mechanism;a cable assembly;a handle bar mechanism;said wheel mechanism comprises a wheel, a plurality of wheel teeth, a frame, an extension, an axle, an axle nut, a brake arm, an arm pin, an arm nut, a plurality of arm teeth, a friction brake, a tire, a brake system return spring, a stop, and a cable retainer;said cable assembly comprises a first cable ferrule, a second cable ferrule, a cable wire, and a cable housing;said handle bar mechanism comprises a lever housing, a handlebar, a screw, a lower lever, a pivot fastener, a grip, an upper lever, a switch, a lower lever stop, an upper lever spring, an upper lever stop, and a pair of lever pins;said frame being positioned adjacent to said wheel;said axle being perpendicularly connected to said frame;said wheel being rotatably attached to said axle with said axle nut;said arm pin being positioned above said wheel and being perpendicularly connected to said frame;said brake arm being pivotally attached to said arm pin with said arm nut;said extension being positioned above said brake arm and being connected to said frame;said lever housing being perpendicularly traversed through by said handlebar;said lever housing being attached to said handlebar with said screw;said handlebar being encircled and attached to said grip;said grip being positioned adjacent to said lever housing along said handlebar;said cable wire being encircled by said cable housing between said first cable ferrule and said second cable ferrule; and said plurality of arm teeth being perpendicularly connected to said brake arm adjacent to said arm pin. 13. The safety braking system for a hand-pushed rollator as claimed in claim 12 comprises, said plurality of wheel teeth being radially positioned around said axle and being perpendicularly connected to said wheel adjacent to said frame;said wheel being encircled by and attached to said tire;said stop being perpendicularly connected to said brake arm adjacent to said plurality of arm teeth;said friction brake being perpendicularly connected to said brake arm and being positioned adjacent to said arm pin opposite of said plurality of arm teeth;said plurality of arm teeth being positioned adjacent to said plurality of wheel teeth;said friction brake being positioned adjacent to said tire;said brake system return spring being attached to said brake arm adjacent to friction brake;said extension being attached to said brake system return spring opposite of said brake arm;said first cable ferrule being connected and positioned on said extension opposite said brake system return spring; andsaid first cable ferrule being traversed through by said cable wire and being attached to said brake arm adjacent to said plurality of arm teeth with said cable retainer. 14. The safety braking system for a hand-pushed rollator as claimed in claim 12 comprises, said lower lever being inserted into by said lever housing;said lower lever being pivotally attached to said lever housing by said pivot fastener;said lower lever stop jutting out of said lever housing opposite to said lower lever and adjacent to said handlebar;said lower lever stop being connected adjacent to said lower lever within said lever housing;said upper lever being positioned around said handlebar and said lever housing;said upper lever being pivotally attached to said handlebar and said lever housing with said pair of lever pins;said upper lever spring being attached to said upper lever and said lever housing;said switch being positioned along said handlebar;said switch being connected adjacent to said upper lever;said upper lever stop being connected to said upper lever opposite to said switch;said lower lever stop being positioned adjacent to said upper lever stop;said second cable ferrule being connected to said lever housing opposite to said lower lever;said second cable ferrule being traversed through by said cable wire;said lever housing being traversed into by said cable wire; andsaid cable wire being attached to said lower lever.