Back to results
US 4,791,828 AGranted
Crank handle apparatus
AssigneeLewisan Products, Inc.
InventorPaul S. Kaye
Life of this patent
Estimating the term…
Abstract
An improved crank handle apparatus including a rod with radial protrusions near its distal end and a rotatable handle having a passageway receiving the rod, the passageway including a proximal portion with keyways therealong for protrusion passage during assembly, a middle retaining portion ending the keyways, and a distal portion of larger cross-section to accommodate the protrusions in any rotational position.
Claims19
Crank handle apparatus for turning about a main axis comprising:
- a rod extending along an axis substantially parallel to the main axis from a proximal end to a distal end, the rod of first cross-section and having protrusion means near the distal end which extend radially beyond the first cross-section;
- a handle rotatably mounted on the rod with an inner end near the proximal end, an opposite outer end, and a passageway receiving the rod and including in series:
- a proximal portion extending from the inner end having keyway means therealong dimensioned to receive the protrusion means during assembly,
- a middle retaining portion ending the keyway, and
- a distal portion of second cross-section larger than the middle portion to accommodate therein the protrusion means in any rotational position.
2 more elements
Dependencies are inferred from the claim text.