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US 10,107,098 B2Granted
Bore wear compensating bit holder and bit holder block
AssigneeThe Sollami Company
InventorPhillip Sollami
Life of this patent
Estimating the term…
Abstract
A bit assembly includes a base block and a bit having a forward body portion and a shank. The bit includes a diametrically expanding retainer circumferentially disposed around a shank of the bit adapted to maintain the interference contact between the bit and the base block as the diameter of a bore of the base block increases from use. The bit assembly also includes a sealing gasket that forms a force fit between a washer disposed about the shank of the bit and the base block.
Claims21
A bit comprising:
- a bit body;
- a shank axially depending from the bit body;
- a retainer disposed circumferentially about the shank, the retainer comprising a slot axially extending along a length of the retainer;
- and
- a washer disposed circumferentially about the shank, the washer comprising an aperture including a first portion, a second portion, and a third portion disposed between the first portion and the second portion, the first portion tapered axially inwardly from a front face of the washer towards the third portion and the second portion tapered axially outwardly from the third portion to a rear face of the washer, the washer adapted to engage a location adjacent a forward end of the retainer.
2 more elements
A bit comprising:
- a bit body;
- a shank axially depending from the bit body;
- a retainer disposed circumferentially about the shank, the retainer comprising a slot axially extending along a length of the retainer;
- a washer disposed circumferentially about the shank, the washer adapted to engage a location adjacent a forward end of the retainer;
- and
- a sealing gasket disposed circumferentially about the shank, the sealing gasket adapted to form a seal between the washer and a base block.
3 more elements
A bit comprising:
- a bit body;
- a shank axially depending from the bit body;
- a retainer disposed circumferentially about the shank, the retainer comprising a slot axially extending along a length of the retainer;
- a washer disposed circumferentially about the shank;
- an annular groove on a rear face of the washer;
- and
- a sealing gasket disposed in the annular groove, the sealing gasket adapted to form a seal between the washer and a base block.
4 more elements
A combination bit and base block comprising:
- the bit comprising:
- a bit body;
- a shank axially depending from the bit body;
- a retainer disposed circumferentially about the shank, the retainer comprising a slot axially extending along a length of the retainer;
- and
- a washer disposed circumferentially about the shank, the washer comprising an aperture including a first portion, a second portion, and a third portion disposed between the first portion and the second portion, the first portion tapered axially inwardly from a front face of the washer towards the third portion and the second portion tapered axially outwardly from the third portion to a rear face of the washer, the washer adapted to engage a location adjacent a forward end of the retainer;
- and
- the base block comprising a bore adapted to make an interference contact with the retainer of the bit.
5 more elements
A combination bit and base block comprising:
- the bit comprising:
- a bit body;
- a shank axially depending from the bit body;
- a retainer disposed circumferentially about the shank, the retainer comprising a slot axially extending along a length of the retainer;
- and
- a washer disposed circumferentially about the shank, the washer adapted to engage a location adjacent a forward end of the retainer;
- the base block comprising a bore adapted to make an interference contact with the retainer of the bit;
- and
- a sealing gasket disposed circumferentially about the shank, the sealing gasket adapted to form a seal between the washer and the base block.
6 more elements
A combination bit and base block comprising:
- the bit comprising:
- a bit body;
- a shank axially depending from the bit body;
- a retainer disposed circumferentially about the shank, the retainer comprising a slot axially extending along a length of the retainer;
- a washer disposed circumferentially about the shank;
- an annular groove on a rear face of the washer;
- and
- a sealing gasket disposed in the annular groove, the sealing gasket adapted to form a seal between the washer and the base block;
- and
- the base block comprising a bore adapted to make an interference contact with the retainer of the bit.
7 more elements
A combination bit and base block comprising:
- the bit comprising:
- a bit body;
- a shank axially depending from the bit body;
- a retainer disposed circumferentially about the shank, the retainer comprising a slot axially extending along a length of the retainer;
- and
- a washer disposed circumferentially about the shank, wherein an aperture of the washer includes a first tapered portion adjacent a second tapered portion;
- and
- the base block comprising a bore adapted to make an interference contact with the retainer of the bit, wherein an enlargement of the base block bore allows the retainer outer diameter to enlarge and a leading tapered surface of the retainer impinging on the second tapered surface of the washer moves the washer towards the bit body.
5 more elements
Dependencies are inferred from the claim text.