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US 2026/0165892 A1Published application
Hub Locking System for Wheelchairs
OwnerSteven M Ortizinventor
Life of this patent
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Abstract
The disclosed invention is a manual wheelchair locking mechanism with important operational improvements. A shift cable plunger assembly utilizes a locking pin that is modified to make it more reliable to engage with the locking disc. The locking disc is attached to a spoke assembly that is modified to provide improved spoke stability.
Claims10
An improved hub locking system for a wheelchair comprising:
- A) a handle movable between two positions, said handle is connected to a shift cable,
- B) said shift cable being connected to a pair of plunger assemblies, each said plunger assembly further comprising:
- a) a plunger with a pin end and a spring end,
- b) a spring positioned adjacent to said spring end,
- c) said plunger positioned inside a threaded sleeve, and
- d) a threaded cap attached to said threaded sleeve encompassing said spring,
- C) each said plunger assembly connected to a wheel lock assembly further comprising:
- a) a slotted disc with multiple slots to receive said pin end,
- b) two urethane discs positioned on either side of said slotted disc,
- c) a pair of half discs positioned adjacent to said urethane discs,
- d) said slotted disc, said urethane discs, and said half discs are axially aligned and connected together by screws,
- D) said handle operable to move said pin ends to be inserted into said slotted discs and be withdrawn from said slotted discs,
- E) whereby said handle is operable to prevent movement of said wheelchair.
10 more elements
A method for locking wheelchair wheels, comprising:
- A) moving a handle between two positions, said handle being connected to a shift cable,
- B) said shift cable being connected to a pair of plunger assemblies, each said plunger assembly comprising:
- a) a plunger with a pin end and a spring end,
- b) a spring positioned adjacent to said spring end,
- c) positioning said plunger inside a threaded sleeve,
- d) attaching a threaded cap to said threaded sleeve, encompassing said spring,
- C) connecting each plunger assembly to a wheel lock assembly, each said wheel lock assembly further comprising:
- a) a slotted disc with multiple slots to receive said pin end,
- b) two urethane discs,
- c) a pair of half discs,
- d) axially aligning and connecting said slotted disc, urethane discs, and half discs by screws,
- D) operating said handle to move said pin ends to be inserted into said slotted discs and withdrawn from said slotted discs,
- E) operating said handle to prevent movement of said wheelchair.
10 more elements
Dependencies are inferred from the claim text.