US5322398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tools for machining bores
Assignee: Robert Bosch GmbH
•
Filing: 1990-12-22
•
Granted: 1994-06-21
•
Expires: 2010-12-22
Abstract
Abstract The tool for machining bore transitions includes a holder drivable rotatably through at least one rotation, and drivable in an advance stroke and in a return stroke; and a spring wire having at least two resilient arms with overlapping movable free end, the spring wire being bent into a hairpin shape so as to have a stem or bent end portion structured to be inserted and held in the holder and a cutting medium provided on the free ends of the resilient arms for machining the bore transitions. The holder can advantageously be provided with a slot for the stem, threaded bolts which engage between the resilient arms of the spring wire and a spring which spring-loads the side of the spring wire inserted in the slot.
Inventors
- 👤 Hermann Schmidt
- 👤 Dieter Aulich
- 👤 Peter Essig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:27
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/10; B23B51/101; B23B2260/00; B23B2260/036; Y; Y10; Y10S; Y10S408/00; Y10S408/714; Y10T; Y10T408/00; Y10T408/81; Y10T408/89; Y10T408/909
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
87 words
A tool for machining bore transitions, comprising a holding means drivable rotatably through at least one rotation and drivable in an advance stroke and in a return stroke; at least two resilient arms held in said holding means, each of said at least two resilient arms including a part of a stem clamped in said holding means and a free end remote from said part of said stem, said free end projecting from said holding means; and cutting means provided on said at least two resilient arms.
Claim 2
Dependent Claim
87 words
A tool for machining bore transitions, comprising a holding means drivable rotatably through at least one rotation and drivable in an advance stroke and in a return stroke; at least two resilient arms held in said holding means, each of said at least two resilient arms including a part of a stem clamped in said holding means and a free end remote from said part of said stem, said free end projecting from said holding means; and cutting means provided on said at least two resilient arms.
Claim 3
Dependent Claim
41 words
A tool as defined in claim 1, wherein two of said at least two resilient arms are held in said holding means and said two resilient arms held in said holding means are part of a spring wire including said stem.
Claim 4
Dependent Claim
42 words
A tool as defined in claim 1, wherein said at least two resilient arms are part of a spring wire, said spring wire is bent into a hairpin shape and forms a head portion comprising said free ends having said cutting means.
Claim 5
Dependent Claim
21 words
A tool as defined in claim 3, wherein said free ends of said spring wire have an approximately circular arc shape.
Claim 6
Dependent Claim
37 words
A tool as defined in claim 3, wherein said holding means comprises a holder provided with a slot for said spring wire and said stem of said spring wire is inserted in said slot of said holder.
Claim 7
Dependent Claim
32 words
A tool as defined in claim 5, wherein said holding means also includes two guide parts engaging between said resilient arms and guiding said stem of said spring wire in said holder.
Claim 8
Dependent Claim
35 words
A tool as defined in claim 1, wherein said cutting means comprises a cutting medium coating said at least two resilient arms and consisting of a plurality of diamond grains embedded in a carrier material.
Claim 9
Dependent Claim
102 words
A tool for machining bore transitions, comprising a holding means drivable rotatably through at least one rotation and drivable in an advance stroke and in a return stroke; a spring wire bent into a hairpin shape, said spring wire including a stem clamped in said holding means and two resilient arms, said resilient arms extending from said stem and having free ends, said free ends being remote from said stem and projecting from said holding means, said free ends of said spring wire overlapping and being movable relative to each other; and cutting means comprising a cutting medium coating said free ends.
Claim 10
Dependent Claim
102 words
A tool for machining bore transitions, comprising a holding means drivable rotatably through at least one rotation and drivable in an advance stroke and in a return stroke; a spring wire bent into a hairpin shape, said spring wire including a stem clamped in said holding means and two resilient arms, said resilient arms extending from said stem and having free ends, said free ends being remote from said stem and projecting from said holding means, said free ends of said spring wire overlapping and being movable relative to each other; and cutting means comprising a cutting medium coating said free ends.
Claim 11
Dependent Claim
149 words
A tool for machining bore transitions, comprising a holding means drivable rotatably through at least one rotation and drivable in an advance stroke and in a return stroke; a spring wire bent into a hairpin shape, said spring wire including a stem clamped in said holding means and two resilient arms, said resilient arms extending from said stem and having free ends remote from said stem, said free ends overlapping, being movable relative to each other and projecting out from said holding means; and cutting means provided on said at least two resilient arms, and wherein said holding means includes a holder provided with a slot for holding said stem of said spring wire, two guide parts engaging between said resilient arms and guiding said stem of said spring wire in said holder and a holding spring supported in said holder and spring-loading said stem of said spring wire.
Claim 12
Dependent Claim
149 words
A tool for machining bore transitions, comprising a holding means drivable rotatably through at least one rotation and drivable in an advance stroke and in a return stroke; a spring wire bent into a hairpin shape, said spring wire including a stem clamped in said holding means and two resilient arms, said resilient arms extending from said stem and having free ends remote from said stem, said free ends overlapping, being movable relative to each other and projecting out from said holding means; and cutting means provided on said at least two resilient arms, and wherein said holding means includes a holder provided with a slot for holding said stem of said spring wire, two guide parts engaging between said resilient arms and guiding said stem of said spring wire in said holder and a holding spring supported in said holder and spring-loading said stem of said spring wire.
Claim 13
Dependent Claim
14 words
A tool as defined in claim 9, wherein said guide parts comprise threaded bolts.
Claim 14
Dependent Claim
48 words
A tool as defined in claim 10, wherein each of said threaded bolts has an end projecting to said slot and a spring-loaded ball projecting from said end into said slot so that said spring wire can be inserted into said slot and engaged by said threaded bolts.
References Cited (Backward Citations)
US450323A
Cited
US2732612A
Cited
US1126961A
Cited
US1786520A
Cited
CH261657A
Cited
US3076254A
Cited
DE3333499A1
Cited
JPS60207703A
Cited
DE3517147A1
Cited
US5158405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-20 | 1997-12-20 | 1998-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-20 | 2001-12-20 | 2002-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-20 | 2005-12-20 | 2006-06-21 | $7700.00 | Window Closed / Lapsed |