Pump jack base
OwnerJeffrey G Goodwin, Howard W Hughesinventors
Life of this patent
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Abstract
A pump jack base (10) for a pole (12) of a pump jack scaffold (14) comprising a base plate (16). A facility (18) is for securing the base plate (16) to a generally flat support surface (20). A structure (22) is for holding a lower end of the pole (12) of the pump jack scaffold (14). An assembly (24) is for attaching the holding structure (22) to the base plate (16) in an adjustable manner. The pole (12) can be positioned within one hundred and eighty degree angle with respect to the base plate (16) to compensate for the pitch and slope of the generally flat support surface (20).
Claims13
A pump jack base for connection to a pole of a pump jack scaffold, said pump jack base comprising:
- a) a base plate;
- b) means for securing said base plate to a generally flat support surface;
- c) means for holding a lower end of the pole of the pump jack scaffold;
- and
- d) means for attaching said holding means to said base plate in an adjustable manner, so that the pole can be positioned within one hundred and eighty degree angle with respect to said base plate to compensate for the pitch and slope of the generally flat support surface, wherein said holding means is a cup having tapered lower ends, said cup is adapted to receive the lower end of the pole of the pump jack scaffold therein, said cup including:
- i) a stop plate slightly narrower along two opposite long edges than inner area of said cup;
- and
- ii) means for retaining said stop plate within said cup, so as to prevent the lower end of the pole from dropping all the way down into said cup, said means for retaining being a weld applied between two opposite short edges of said stop plate and two inner abutting surfaces of said cup, so that two spaces are provided therebetween for moisture dispersion.
A pump jack base for connection to a pole of a pump jack scaffold, said pump jack base comprising:
- a) a base plate being a flat thin rectangular member having beveled corners;
- b) means for securing said base plate to a generally flat support surface;
- c) means for holding a lower end of the pole of the pump jack scaffold;
- and
- d) means for attaching said holding means to said base plate in an adjustable manner, so that the pole can be positioned within one hundred and eighty degree angle with respect to said base plate to compensate for the pitch and slope of the generally flat support surface, wherein said holding means is a cup having tapered lower ends, said cup is adapted to receive the lower end of the pole of the pump jack scaffold therein, said cup including:
- i) a stop plate slightly narrower along two opposite long edges than inner area of said cup;
- and
- ii) means for retaining said stop plate within said cup, so as to prevent the lower end of the pole from dropping all the way down into said cup, said means for retaining being a weld applied between two opposite short edges of said stop plate and two inner abutting surfaces of said cup, so that two spaces are provided therebetween for moisture dispersion.
Dependencies are inferred from the claim text.