High speed safety block assembly
OwnerJeff Habberstadinventor
Life of this patent
Estimating the term…
Abstract
A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety of the block assembly by preventing the block assembly from coming apart in the event of a screw failure. The sheave of the high speed safety block assembly includes a needle bearing which rolls on the bearing surface of the axle, permitting much higher loads and speeds when the high speed safety block assembly is used.
Claims7
A high speed safety block assembly, comprising:
- a first cheek plate and second cheek plate, the cheek plates each having a top end and a bottom end, the cheek plates also each having an inner surface with a recessed area with an axle hole located centrally therein, the first and second cheek plates each also having a pair of raised ear sections at top and bottom ends, the raised ear sections forming a slot between the ear and the inner surface of the cheek plates, such that, the ear sections on the first cheek plate interlock with the ear sections on the second cheek plate;
- an axle having a bearing surface, the axle being positioned between the first and second cheek plates, and fitting within the axle holes on the first and second cheek plates;
- and
- a sheave positioned between the first and second cheek plates, the sheave having a central hole with a needle bearing fixed within the central hole, the needle bearing of the sheave fitting onto the bearing surface of the axle
A high speed safety block assembly, comprising:
- a first cheek plate and second cheek plate, the cheek plates each having a top end and a bottom end, the cheek plates also each having an inner surface with a recessed area with an axle hole located centrally therein, the first and second cheek plates each also having a pair of raised ear sections at top and bottom ends, the raised ear sections forming a slot between the ear and the inner surface of the cheek plates, such that, the ear sections on the first cheek plate interlock with the ear sections on the second cheek plate, the cheek plates also each having a hole through the top and bottom ends;
- a hollow axle with a bearing surface and having a lubrication hole through the bearing surface, the axle being positioned between the first and second cheek plates, and press fit within the axle holes on the first cheek plate;
- and
- a sheave positioned between the first and second cheek plates, the sheave having a central hole with a needle bearing press fit within the central hole, the needle bearing of the sheave fitting onto the bearing surface of the axle.
Dependencies are inferred from the claim text.