Patent US4652184A successfully refreshed from Google Patents.
US4652184A
Expired / Lapsed
US
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Fastening arrangement for fastening a drill bell
Assignee: FISCHER-WERKE ARTUR FISHER & Co KG D-7244 TUMLINGGEN/WALDACHTAL GERMANY GmbH
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Filing: 1985-12-09
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Granted: 1987-03-24
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Expires: 2005-12-09
Abstract
Abstract A fastening arrangement for a drill bell and/or suction bell provided on drills which have a stop rod mounted to the drill that it may be displaced or rigidly fixed, may be adapted to any drill equipped with the stop rod is suggested. The fastening arrangement comprises a U-shaped support which projects radially from the bell and opens towards the wall of the structure being drilled and in its base has an elongate hole. The bell may be fixed to the U-shaped support by means of a clamping member joined to the stop rod and to the U-shaped support, respectively.
Inventors
- 👤 Artur Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
B; B23; B23B; B23B49/00; B23B49/003; B23B49/006; B23Q; B23Q1/00; B23Q1/0063; B23Q11/00; B23Q11/0042; B23Q11/0046; B25; B25F; B25F5/00; B25F5/003; Y; Y10; Y10T; Y10T408/00; Y10T408/50; Y10T409/00; Y10T409/30; Y10T409/304088
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
A fastening arrangement for fastening bell surrounding a drill at a face of a structure being drilled, which drill is provided with a stop rod mounted to the drill so that it can be displaced axially thereof and rigidly connected thereto, the arrangement comprising a U-shaped support projecting outwardly radially from the bell and having a side opening towards the face of the structure being drilled and a base formed with an elongated hole; and a clamping member connected to the stop rod and also connected to said support, said clamping member including an outer part inserted into said support at said side and fixed in said support, and an inner part inserted into said support at said base and receiving an end of said stop rod to hold the latter and having a threaded portion screwed into said inner part, and a head abutting against said base which is clamped between said outer part and said head, whereby distances between the stop rod and an axis of the drill are adjustable by displacing the clamping member, connected to the stop rod, on said support.
Claim 2
Dependent Claim
185 words
A fastening arrangement for fastening bell surrounding a drill at a face of a structure being drilled, which drill is provided with a stop rod mounted to the drill so that it can be displaced axially thereof and rigidly connected thereto, the arrangement comprising a U-shaped support projecting outwardly radially from the bell and having a side opening towards the face of the structure being drilled and a base formed with an elongated hole; and a clamping member connected to the stop rod and also connected to said support, said clamping member including an outer part inserted into said support at said side and fixed in said support, and an inner part inserted into said support at said base and receiving an end of said stop rod to hold the latter and having a threaded portion screwed into said inner part, and a head abutting against said base which is clamped between said outer part and said head, whereby distances between the stop rod and an axis of the drill are adjustable by displacing the clamping member, connected to the stop rod, on said support.
Claim 3
Dependent Claim
43 words
The arrangement as defined in claim 1, wherein said outer part of said clamping member has an end face provided with locking edges, said base having an inner face alos provided with locking ridges engaged with the locking edges of said outer part.
Claim 4
Dependent Claim
28 words
The arrangement as defined in claim 1, wherein said inner part has a recess matching a cross-section of said stop rod to receive the end of the latter.
Claim 5
Dependent Claim
12 words
The arrangement as defined in claim 1, wherein said head is knurled.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |