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US 5,690,300 AGranted
Interlocked core shaft
AssigneeDouble-E Inc.
InventorDon Iannucci
Life of this patent
Estimating the term…
Abstract
A core or a core shaft is formed from a plurality of identical, extruded pieces. Each piece has complementary grooves on opposite sides, so that the pieces interlock. Each piece extends the length of the core or core shaft. The pieces are held together by a series of pins and are connected to a core shaft journal or a core cap by a series of screws that fit into receptacles in the pieces. When used as a core shaft, each piece includes a channel for a bladder.
Claims19
A core comprising:
- a plurality of adjoining core lengths together forming a hollow core tube having an inner diameter and an outer diameter, each core length having an inner side, an outer side, a left side, and a right side;
- wherein the inner side, the outer side, the left side, and the right side of each core length form a channel extending a length of each core length;
- and wherein a portion of the left side of each core length fits into a portion of the right side of the adjoining core length;
- and
- a plurality of pins, each of the plurality of pins holding together two adjacent core lengths.
2 more elements
A core shaft assembly comprising:
- a plurality of adjoining core lengths together forming a hollow core shaft having an internal side and a core side, each core length having an inner side, an outer side, a left side, and a right side;
- wherein the inner side, the outer side, the left side, and the right side of each core length form a channel extending the length of each core length;
- and wherein a portion of the left side of each core length fits into a portion of the right side of the adjoining core length;
- and
- a journal assembly connected to the core shaft.
2 more elements
A core shaft assembly comprising:
- a plurality of adjoining core lengths together forming a hollow core shaft having an internal side and a core side, wherein the hollow core shaft includes a plurality of bladder channels;
- a plurality of bladder assemblies, each inserted into one of the plurality of bladder channels;
- and
- a plurality of leaves, each leaf including a single piece having a radial section extending out of the core shaft from one of the plurality of bladder channels and a gripping section extending from the radial section along a portion of the core side of the core shaft.
1 more element
Dependencies are inferred from the claim text.