US3591305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reamer with replaceable cutting blade
Assignee: Mapal Dr Kress SE and Co KG
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Filing: 1969-04-07
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Granted: 1971-07-06
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Expires: 1989-04-07
Abstract
Abstract The cutter head of a reamer has a groove shaped for receiving a cutting blade which partly separates an integral jaw portion from the remainder of the cutting head. A clamping screw permits the jaw portion to be tightened on the cutting blade whose mobility is increased by a slot in a plane intersecting the groove at an obtuse angle. Further slots may be provided for distributing the pressure of the jaw portion on the blade in a desired manner.
Inventors
- 👤 Johann Aichhorn
- 👤 Erich Rietzler
- 👤 Dieter Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:42
CPC Classifications
B; B23; B23D; B23D77/00; B23D77/02; B23D77/04; B23D77/048; B23D2277/00; B23D2277/20; B23D2277/201; B23D2277/46; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1928; Y10T407/193; Y10T407/1934; Y10T407/1938; Y10T407/194; Y10T407/28; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588; Y10T408/85892; Y10T408/94; Y10T408/95; Y10T408/953
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
161 words
In a reamer including a shank (20) having an axis of rotation, and a cutter head (1) on an axially terminal portion of said shank, said cutterhead being formed with an elongated groove (2) shaped for receiving a cutting blade (3), said groove defining a first plane extending in the direction of said axis and partly separating an integral jaw portion (4) from the remainder of said head, and clamping means (7) for pressing a face of said jaw portion against a cutting blade received in said groove, the improvement which comprises a slot (5) in said head defining a second plane offset from said first plane and extending in the direction of said axis, a portion of said slot directly communicating with said groove and further separating said jaw portion from said remainder of the head, the axially terminal portion of said slot remote from said shank being substantially closed by a bridge integrally connecting said jaw with said remainder.
Claim 2
Dependent Claim
161 words
In a reamer including a shank (20) having an axis of rotation, and a cutter head (1) on an axially terminal portion of said shank, said cutterhead being formed with an elongated groove (2) shaped for receiving a cutting blade (3), said groove defining a first plane extending in the direction of said axis and partly separating an integral jaw portion (4) from the remainder of said head, and clamping means (7) for pressing a face of said jaw portion against a cutting blade received in said groove, the improvement which comprises a slot (5) in said head defining a second plane offset from said first plane and extending in the direction of said axis, a portion of said slot directly communicating with said groove and further separating said jaw portion from said remainder of the head, the axially terminal portion of said slot remote from said shank being substantially closed by a bridge integrally connecting said jaw with said remainder.
Claim 3
Dependent Claim
37 words
In a reamer as set forth in claim 1, said slot extending in a direction away from said groove and having a bottom wall remote from said groove and intersecting said second plane in a concave arc.
Claim 4
Dependent Claim
21 words
In a reamer as set forth in claim 2, said first and second planes intersecting each other at an obtuse angle.
Claim 5
Dependent Claim
17 words
In a reamer as set forth in claim 3, said slot being much narrower than said groove.
Claim 6
Dependent Claim
18 words
In a reamer as set forth in claim 3, said slot being substantially closed in both axial directions.
Claim 7
Dependent Claim
57 words
In a reamer as set forth in claim 1, said head being formed with another slot (13) defining a third plane intersecting said second plane and extending in the direction of said axis, said other slot communicating with said first-mentioned slot within said cutter head and further separating said jaw portion from said remainder of the head.
Claim 8
Dependent Claim
69 words
In a reamer as set forth in claim 1, said jaw portion being formed with two additional slots extending in respective axially spaced planes transverse to said axis of rotation from an outer surface of said jaw portion to said groove and to said first-mentioned slot so as partly to separate a clamping tongue axially extending between said two additional slots from axially adjacent parts of said jaw portion.
Claim 9
Dependent Claim
31 words
In a reamer as set forth in claim 7, said additional slots having respective bottom walls remote from said outer surface and intersecting the respective axially spaced planes in concave arcs.
Claim 10
Dependent Claim
154 words
In a reamer as set forth in claim 1, said clamping means including a clamping screw connecting said jaw portion and said remainder and threadedly engaging one of said jaw portion and of said remainder, said clamping screw having an axis extending in a plane transverse to said axis of rotation, and defining a plane parallel to said axis of rotation; and adjusting screw means (8, 9) threadedly received in said head for threaded movement about an axis extending in a plane transverse to said axis of rotation and spaced from said clamping screw in the direction of said axis of rotation, the adjusting screw means extending into said groove for adjusting engagement with a blade received in said groove, the axis of said threaded movement defining a plane parallel to said axis of rotation and transverse to the plane parallel to said axis of rotation defined by the axis of said clamping screw.
Claim 11
Dependent Claim
45 words
In a reamer as set forth in claim 4, the depth of said slot away from said groove increasing from said axially terminal portion of said slot toward the axially central portion, said jaw portion and said remainder jointly constituting a unitary piece of metal.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |