Stairway lift

A stairway lift, comprising:

• a guide disposable on treads of a stairway, said guide comprising a first side, a first rail provided on said first side, a chain rack provided on said first side and a second side opposite to said first side;
• a mobile body supported by said first rail, said mobile body comprising a drive sprocket engageable with said chain rack, an electric motor coupled with said drive sprocket for rotatively driving said drive sprocket, a follower sprocket engageable with said chain rack and rotatable as said mobile body moves along said chain rack, a rotation speed detection means for detecting the rotation speed of said follower sprocket and providing a rotation signal, and a brake for stopping said mobile body along said first rail in response to said rotation signal;
• a carrier;
• and
• a coupling arrangement coupling said mobile body and said carrier such that said carrier is removably supported by said mobile body on said second side of said guide and guided for travel by said guide, whereby said carrier can ascend and descend said stairway together with said mobile body.

A stairway lift, comprising:

• a guide disposable on treads of a stairway, said guide comprising a first side, a first rail provided on said first side, and a second side opposite to said first side;
• an electrically operated mobile body supported by said first rail;
• a carrier comprising a carrier body;
• and
• a coupling arrangement coupling said mobile body and said carrier such that said carrier is removably supported by said mobile body on said second side of said guide and guided for travel by said guide, said coupling arrangement comprising a first coupling on said carrier body and a second coupling on said mobile body, said first coupling comprising a first clamp member supported by said carrier body, a lever member rotatively supported by said first clamp member, and a second clamp member that is supported by said lever member and movable relative to said first clamp member upon rotation of said lever member, said first clamp member and said second clamp member together being operable to hold said second coupling therebetween upon operation of said lever member.

A stairway lift, comprising:

• a guide disposable on treads of a stairway, said guide comprising a first side, a first rail provided on said first side, and a second side opposite to said first side;
• an electrically driven mobile body supported by said first rail;
• a carrier having a plurality of guide rollers rotatively supported thereby;
• and
• a coupling arrangement coupling said mobile body and said carrier such that said carrier is removably supported by said mobile body on said second side of said guide and guided for travel by said guide, whereby said carrier can ascend and descend said stairway together with said mobile body;
• wherein said guide has a curved second rail on said second side thereof having said plurality of guide rollers of said carrier engageable therewith, said second rail having a shape such that said carrier is maintained in a horizontal posture when said plurality of guide rollers are engaged therewith;
• wherein said second rail comprises a guide rail, said plurality of guide rollers and said guide rail having a sectional shape such that said guide rail maintains engagement with said plurality of guide rollers and laterally supports said plurality of guide rollers;
• said carrier further comprises a roller frame movably supported on said carrier body;
• said plurality of guide rollers comprises a first guide roller rotatively supported on said carrier body and a second guide roller rotatively supported on said roller frame;
• and
• said roller frame is selectively movable between a first position in which said first and second guide rollers are maintained in engagement with said guide rail such that said carrier is movably supported by said guide and a second position in which said second guide roller is disengaged from said guide rail in order to allow said carrier to be released from said guide.

A stairway lift, comprising:

• a stairway having stairs with treads and a sidewall along said stairs, said stairs extending between a downstairs floor and an upstairs floor;
• a guide provided on said treads of said stairs along said sidewall such that a space is formed between said sidewall and said guide, said guide comprising a downstairs end, an upstairs end, a first side facing said sidewall, a first rail provided on said first side, a rack provided on said first side and extending along said sidewall, a power line arranged on said first side and extending along said sidewall and a second side facing away from said sidewall;
• a mobile body supported by said first rail in said space formed between said sidewall and said guide, said mobile body comprising a drive sprocket engageable with said rack, an electric motor coupled with said drive sprocket for rotatively driving said drive sprocket and a power supply member connected with said electric motor and contacting said power supply line;
• a carrier;
• a coupling arrangement coupling said mobile body and said carrier such that said carrier is removably supported by said mobile body on said second side of said guide and guided for travel by said guide, whereby said carrier can ascend and descend said stairway together with said mobile body;
• and
• a lift located in said downstairs floor adjacent to said downstairs end of said guide, said lift comprising a carrier stage that is vertically movably supported for movement between a first position in which said carrier stage is adjacent to said downstairs floor and a second position in which said carrier stage is raised from said downstairs floor and a drive cylinder for vertically moving said carrier stage, whereby said carrier can be vertically moved on said carrier stage for attachment to and detachment from said mobile body.

A stairway lift, comprising:

• a guide disposable on treads of a stairway, said guide comprising a first side, a first rail provided on said first side, and a second side opposite to said first side;
• an electrically driven mobile body supported by said first rail;
• a carrier comprising
• a mobile base having casters thereunder,
• a first frame erect on said mobile base,
• an entrance base movably supported relative to said first frame,
• a second frame movably supported by said entrance base,
• a pair of shutting members rotatively supported sides of said first frame, and
• a pair of gangway boards rotatively supported at ends of said entrance base,
• said mobile base being smaller than said entrance base,
• said first and second frames and said pair of gangway boards having erected positions at four sides of said entrance base,
• said pair of shutting members enclosing a space above said entrance base together with said first frame and said second frame when in closed positions for movement of said carrier along said guide, and
• said pair of shutting members being folded toward said first frame, said pair of gangway boards being folded toward said entrance base, said second frame being folded toward said entrance base, and said second frame and said entrance base being folded toward said first frame together when said carrier is in a non-use position;
• and
• a coupling arrangement coupling said mobile body and said carrier such that said carrier is removably supported by said mobile body on said second side of said guide and guided for travel by said guide, whereby said carrier can ascend and descend said stairway together with said mobile body.

A stairway lift, comprising:

• a guide disposable on treads of a stairway, said guide comprising a first side, a first rail provided on said first side, a chain rack provided on said first side and a second side opposite to said first side;
• a mobile body supported by said first rail, said mobile body comprising a drive sprocket engageable with said chain rack, and an electric motor coupled with said drive sprocket for rotatively driving said drive sprocket;
• a carrier;
• and
• a coupling arrangement coupling said mobile body and said carrier such that said carrier is removably supported by said mobile body on said second side of said guide and guided for travel by said guide, whereby said carrier can ascend and descend said stairway together with said mobile body.