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US 6,945,742 B2Granted
Portable manhole cover remover
OwnerDave Robertsinventor
Life of this patent
Estimating the term…
Abstract
A manhole cover remover, including an attachment; a support; a pivot arm having a proximal end hinged to the support and the pivot arm having a distal end; a connector joining the attachment to the distal end of the pivot arm; a winch joined to the distal end of the pivot arm; and a power source, the power source in operable communication with the winch and method of use including the steps of rotating a pivot arm down toward a manhole over; connecting the pivot arm to the manhole cover; and winching the pivot arm upward.
Claims15
A manhole cover remover, comprising:
- an attachment, the attachment being a magnet;
- a support, the support including uprights, wheels, cross bars and a base plate;
- at least one outrigger, the at least one outrigger including a horizontal arm, an attachment plate joining the horizontal arm to the support, a castor joined to the horizontal arm and a handle hingedly joined to the horizontal arm, the horizontal arm rotating between a vertical position such that the horizontal arm is positioned longitudinally against the support and a horizontal position such that the wheels of the support and the castor of the horizontal arm are positioned approximately equidistant in a circumferential manner about a manhole cover;
- a pivot arm, the pivot arm having a proximal end hinged to the support and the pivot arm having a distal end;
- a connector joining the attachment to the distal end of the pivot arm;
- a winch joined to the distal end of the pivot arm, the winch including a control and wiring;
- and
- a power source, the power source in operable communication with the magnet and the power source in operable communication with the winch.
5 more elements
A manhole cover remover, comprising:
- an attachment;
- a support;
- at least one outrigger joined to the support;
- a handle joined to the at least one outrigger, the handle having a use position wherein the handle is oriented approximately ninety degrees relative to the at least one outrigger and a collapsed position wherein the handle is oriented generally parallel to the at least one outrigger;
- a pivot arm, the pivot arm having a proximal end hinged to the support;
- a connector joining the attachment to the distal end of the pivot arm;
- a winch joined to the distal end of the pivot arm;
- and
- a power source, the power source in operable communication with the winch.
6 more elements
Dependencies are inferred from the claim text.