Telescopic crutch and walking stick
OwnerPatrick Champignyinventor
Life of this patent
Estimating the term…
Abstract
A telescopic combined crutch and walking stick, having a lower ground-engaging tube; a middle tube mounted slidably and non-rotatably in the ground engaging tube and lockingly therein for positioning it in the lower tube in one of several selectable positions; and an upper tube mounted slidably and non-rotatably in middle tube and lockingly therein for positioning it in the middle tube in one of several selectable positions. The tubes are of a length such that, when they are fully retracted one into the other, the length of the combined crutch and stick is about 1/3 the length when fully extended. The combination further includes an armpit support mounted at the upper end of the upper tube, and a walking stick handle mounted at the upper end of the middle tube.
Claims16
A telescopic combined crutch and walking stick, comprising:
- a lower ground-engaging tube:
- a middle tube slidably mounted in said ground engaging tube;
- first locking means in the middle tube for positioning said middle tube in said lower tube in one of several selectable positions;
- an upper tube slidably mounted in said middle tube, said upper tube having a free upper end;
- second locking means in the upper tube for positioning said upper tube in said middle tube in one of several selectable positions;
- an armpit support mounted at the upper end of said upper tube;
- and
- a walking stick handle mounted at the upper end of said middle tube;
- wherein said lower, middle and upper tubes are of a length such that, when said tubes are fully retracted one into the other, the length of said combined crutch and stick is about 1/3 the length thereof when fully extended;
- wherein said middle tube and said lower tube are each formed with aligned holes through and spaced along the walls thereof;
- wherein said first locking means mounted in the middle tube for positioning said middle tube in said lower tube comprises a first detent knob transversally extending inside of and at the lower end of said middle tube, and spring means for resiliently pressing said first knob into a hole of said aligned holes of said lower tube when in registry therewith;
- wherein said second locking means mounted in the upper tube for positioning said upper tube in said middle tube comprises a second detent knob, transversally extending inside of and at the lower end of said upper tube, and spring for means resiliently pressing said second knob into a hole of said aligned holes of said middle tube when in registry therewith;
- and
- wherein said combined crutch and walking stick further comprises means for preventing relative rotation of said lower, middle and upper tubes and means for blocking all but one of said aligned holes of said lower tube and all but one of said aligned holes of said middle tube.
Dependencies are inferred from the claim text.