US4024778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable tool holder
Assignee: Individual
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Filing: 1975-10-06
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Granted: 1977-05-24
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Expires: 1995-10-06
Abstract
Abstract A holder for a retractable cutting tool holder and which includes a housing having a bore within which is provided the retractable tool holder with its operative end extending therebeyond, a piston member in the bore operatively engaged with the retractable holder, adjustable means for setting the stroke of the piston and thereby the cutting depth of the work tool, and air pressure passageways in communication with opposite sides of said piston for selectively advancing and providing support for the work tool and subsequently simultaneously removing said support and retracting said tool without leaving tool witness marks on a work piece.
Inventors
- 👤 James R. De Fauw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03432; B23B29/03446; B23Q; B23Q1/00; B23Q1/25; B23Q1/64; B23Q1/68; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T82/00; Y10T82/25; Y10T82/2585
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
324 words
A cutting tool holder for use with cutting tool machines having the work piece rotated relative to the working tool, and comprising; a housing suitable for being held and retained within a work tool chucking device and having a bore provided therewithin which is receptive of a retractable tool holder protruding through one end thereof and supported therewithin, a piston member received in said bore and having means of actuating engagement with said retractable tool holder and a piston rod extending through the opposite end of said bore, an end wall closure on said housing for closing said bore and having said piston rod extended therethrough, micrometer adjustment means provided on the end of said piston rod for relatively setting said piston member in said bore, air pressure passage means provided through the external wall of said housing and in communication with said bore for pressurized actuation of said piston to set said cutting tool and to selectively provide and remove tool support therefore, and means operative on the other side of said piston member for actuation thereof in the opposite direction immediately upon and simultaneous with the removal of tool support therefrom, said housing member having air pressure passage means in communication with said bore on the other side of said piston member and serving at least partially as said last mentioned operative means, said housing member having one end of said bore restricted to provide a shoulder stop flange and which is threaded for retaining engagement with said retractable tool holder, and said piston member having like means of shoulder stop and threaded engagement with said retractable tool holder for secure engagement thereto, and said micrometer adjustment means including a dial member in threaded engagement with said piston rod and having abutment engagement with said end closure wall in the setting of said piston member in said bore and the work cut of a cutting tool carried by said retractable tool holder.
Claim 2
Dependent Claim
324 words
A cutting tool holder for use with cutting tool machines having the work piece rotated relative to the working tool, and comprising; a housing suitable for being held and retained within a work tool chucking device and having a bore provided therewithin which is receptive of a retractable tool holder protruding through one end thereof and supported therewithin, a piston member received in said bore and having means of actuating engagement with said retractable tool holder and a piston rod extending through the opposite end of said bore, an end wall closure on said housing for closing said bore and having said piston rod extended therethrough, micrometer adjustment means provided on the end of said piston rod for relatively setting said piston member in said bore, air pressure passage means provided through the external wall of said housing and in communication with said bore for pressurized actuation of said piston to set said cutting tool and to selectively provide and remove tool support therefore, and means operative on the other side of said piston member for actuation thereof in the opposite direction immediately upon and simultaneous with the removal of tool support therefrom, said housing member having air pressure passage means in communication with said bore on the other side of said piston member and serving at least partially as said last mentioned operative means, said housing member having one end of said bore restricted to provide a shoulder stop flange and which is threaded for retaining engagement with said retractable tool holder, and said piston member having like means of shoulder stop and threaded engagement with said retractable tool holder for secure engagement thereto, and said micrometer adjustment means including a dial member in threaded engagement with said piston rod and having abutment engagement with said end closure wall in the setting of said piston member in said bore and the work cut of a cutting tool carried by said retractable tool holder.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |