US3787972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deburring tool
Assignee: NEUMD ARMATURENFAB APPARATEBAU
•
Filing: 1971-06-28
•
Granted: 1974-01-29
•
Expires: 1991-06-28
Abstract
Abstract The invention relates to a manual deburring tool having a handle, a scraper blade and a blade-holder attached to the handle, and having a longitudinal bore into which a circular shank of the blade is rotatably inserted. To enable the tool to be used for working on internal edges as well as external edges, the blade-holder has a transverse bore which intersects the longitudinal bore and into which the shank of the blade is alternatively rotatably insertable. A releasable locking device is provided in the region of the intersection of the bores for holding the blade in the selected bore. The releasable locking device is in the form of a spring biased sleeve which normally holds a spherical detent member in engagement with a peripheral groove on the blade shank whether the blade shank is inserted in the longitudinal bore or the transverse bore. The blade-holder is itself releasably located in an adjusted position in the handle.
Inventors
- 👤 A Carossino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/10; B23B51/101; Y; Y10; Y10T; Y10T29/00; Y10T29/47
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A deburring tool comprising in combination: a handle; a blade-holder having a longitudinal bore and a transverse bore intersecting the longitudinal bore; means attaching said bladeholder to said handle; a scraper blade comprising a circular shank selectively insertable in and rotatable in either of said longitudinal and transverse bores, a crank-like bent portion contiguous to said shank, a portion located eccentrically of the axis of said shank and a scraping edge facing towards the axis of said shank; and releasable locking means disposed in the region of said longitudinal and transverse bores for rotatably holding said blade shank in the selected bore.
Claim 2
Dependent Claim
102 words
A deburring tool comprising in combination: a handle; a blade-holder having a longitudinal bore and a transverse bore intersecting the longitudinal bore; means attaching said bladeholder to said handle; a scraper blade comprising a circular shank selectively insertable in and rotatable in either of said longitudinal and transverse bores, a crank-like bent portion contiguous to said shank, a portion located eccentrically of the axis of said shank and a scraping edge facing towards the axis of said shank; and releasable locking means disposed in the region of said longitudinal and transverse bores for rotatably holding said blade shank in the selected bore.
Claim 3
Dependent Claim
54 words
A tool according to claim 1, in which said handle has a longitudinal bore therein, and said blade-holder has a rod Thereon axially displaceably guided in said handle bore, and in which means are included for fixing said rod of said blade holder in a selected one of various positions in said handle bore.
Claim 4
Dependent Claim
101 words
A tool according to claim 2, in which said rod of said blade-holder has a plurality of notches arranged therealong, and in which said fixing means include a detent member located in said handle and selectively engageable in said notches, a locking member displaceable on said handle and having a locking surface thereon cooperable with said detent member and a spring acting on said locking member to bias said locking member into a position in which said locking surface retains said detent member in a locking position in which the detent member is engaged in a selected one of said notches.
Claim 5
Dependent Claim
60 words
A tool according to claim 3, in which said rod of said blade-holder has a longitudinal groove therein and said notches are disposed along said groove, and in which said detent member is engaged in said longitudinal groove to prevent rotation of said blade-holder in said handle, even when said locking member is displaced against the bias of said spring.
Claim 6
Dependent Claim
41 words
A tool according to claim 2, in which said rod of said blade-holder has a longitudinal bore therein, and said blade-holder includes a holder head fitted into said longitudinal bore, said longitudinal and transverse bores being disposed in said holder head.
Claim 7
Dependent Claim
103 words
A tool according to claim 1, in which said blade shank has a continuous peripheral recess therein, and in which said blade locking means comprise a recess in said blade-holder, said recess being open to said longitudinal and transverse bores, a spherical detent member in said recess, a blade locking member displaceable on said blade-holder and a spring biasing said blade locking member into a position in which the latter engages said spherical detent member and holds said spherical detent member in a position in which it protrudes into said longitudinal and transverse bores and into said peripheral recess of said blade shank.
Claim 8
Dependent Claim
25 words
A tool according to claim 1, in which said scraping edge is disposed at a transition between said bent portion and said eccentrically located portion.
Claim 9
Dependent Claim
37 words
A tool according to claim 1, in which said blade includes a second bent portion contiguous to said eccentrically disposed portion, and in which said scraping edge is disposed in the region of said second bent portion.
Claim 10
Dependent Claim
24 words
A tool according to claim 1, in which said scraping edge is set back relative to portions of said blade adjacent said scraping edge.
References Cited (Backward Citations)
US1365851A
Cited
US2461108A
Cited
US2598443A
Cited
US2759263A
Cited
US2893765A
Cited
US2865100A
Cited
US2963930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |