US3764152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating chucks
Assignee: Bishop Eaves and Sons Ltd
•
Filing: 1971-11-18
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Granted: 1973-10-09
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Expires: 1991-11-18
Abstract
Abstract A chuck which includes a tool holding unit and a body having means whereby it can be driven by a driving element and can telescope realtive thereto and having means for transmitting drives to the tool holding unit, characterised in that : A. THE DRIVING ELEMENT IS A SHANK WHICH HAS A SLIDING KEY CONNECTION WITHIN THE BODY AND THAT THE SHANK TELESCOPES RELATIVE TO THE BODY UNDER THE ACTION OF BIASING MEANS HOUSED ENTIRELY WITHIN AN AXIAL BORE IN THE SHANK AND B. THE MEANS FOR TRANSMITTING DRIVES TO THE TOOL HOLDING UNIT INCLUDES A COMPOUND SLIDE UNIT COMPRISING A PLURALITY OF INTERFITTING ELEMENTS HAVING TONGUE AND GROOVE DRIVING CONNECTIONS AND ARRANGED IN SUCH A WAY AS TO PERMIT LIMITED RADIAL MOVEMENT OF THE TOOL HOLDING UNIT RELATIVE TO THE DRIVING SHANK IN A PAIR OF MUTUALLY TRANSVERSE DIRECTIONS.
Inventors
- 👤 D Eaves
- 👤 H Bergemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:14
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/08; B23B31/083; B23B31/086; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17017; Y10T408/00; Y10T408/94; Y10T408/95
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
A chuck comprising a tool holding unit, a body, a driving element comprising a shank telescopically mounted relative to said body, and having a sliding key connection between the body to drivingly connect the shank to said body and to permit relative axial sliding movement from an ''''at rest'''' position in each of two opposite axial directions, a resilient biassing means housed entirely within and axially located in the shank and operative between the body and the driving element to restrain said axial sliding movement of the body relative to the driving element in each of said directions, a means for transmitting drive from the body to the tool holding unit said means comprising a compound slide unit including a first element drivingly connected to the tool holding unit, a second element drivingly connected to the body and a third element intermediate the first and second said elements having tongue and groove connections to transmit drive, and arranged in such a way as to permit limited radial movement of the tool holding unit relative to the driving shank in a pair of mutually transverse directions.
Claim 2
Dependent Claim
185 words
A chuck comprising a tool holding unit, a body, a driving element comprising a shank telescopically mounted relative to said body, and having a sliding key connection between the body to drivingly connect the shank to said body and to permit relative axial sliding movement from an ''''at rest'''' position in each of two opposite axial directions, a resilient biassing means housed entirely within and axially located in the shank and operative between the body and the driving element to restrain said axial sliding movement of the body relative to the driving element in each of said directions, a means for transmitting drive from the body to the tool holding unit said means comprising a compound slide unit including a first element drivingly connected to the tool holding unit, a second element drivingly connected to the body and a third element intermediate the first and second said elements having tongue and groove connections to transmit drive, and arranged in such a way as to permit limited radial movement of the tool holding unit relative to the driving shank in a pair of mutually transverse directions.
Claim 3
Dependent Claim
20 words
A chuck according to claim 1 wherein the elements of the compound slide unit are housed entirely within the body.
Claim 4
Dependent Claim
44 words
A chuck according to claim 2 wheRein the third element receives a formation projecting axially from the second element in a recess therein, the projecting formation affording a seat for a spring loaded ball for locating the second element relative to the first element.
Claim 5
Dependent Claim
49 words
A chuck according to claim 3 wherein the third element has a pair of mutually orthogonal radial grooves formed therein, one groove receiving a tongue formation on the first element and the other groove constituting said recess and receiving a tongue constituting said projecting formation on the second element.
Claim 6
Dependent Claim
59 words
A chuck according to claim 1 wherein the biassing means is a compression spring carried by an axially extending spindle received within the axial bore of the shank, the spring being arranged to bear against abutments formed within the shank and the spring being under compression regardless of the direction of relative axial movement between the spindle and shank.
Claim 7
Dependent Claim
49 words
A chuck according to claim 3, in which the biasing means is a compression spring surrounding an axially extending spindle received in the bore of the shank and in which the spindle includes a portion received in a bore in the second element and secured to said second element.
Claim 8
Dependent Claim
40 words
A chuck according to claim 6 in which a blind bore is formed in the first element and receives a compression spring which provides the spring loading for the ball which locates the second element relative to the first element.
Claim 9
Dependent Claim
43 words
A chuck according to claim 1 wherein the tool holding unit receives an adaptor having means for transmitting drive to a tool held by the adaptor, the adaptor including means for limiting the torque transmitted between the tool holding unit and the tool.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |