US4790470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener installation apparatus
Assignee: Avdel UK Ltd
•
Filing: 1987-04-07
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Granted: 1988-12-13
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Expires: 2007-04-07
Abstract
Abstract Fastener installation apparatus for operating cylically so as to instal successively a plurality of fasteners of the type in which a portion is broken off at installation (e.g. breakstem blind rivets) comprises a fastener installation head (11) and a pipe (31) for conveying the broken-off portions away from the head to a receptacle (15). Detection device (48) is mounted adjacent the pipe (31) to detect the presence of a broken-off fastener portion at a pre-determined position (58) there along near the receptacle (15). When a portion is thus sensed, an electrical signal is sent by the detection device (48), via a relay (51), to the installation control system (14a, 14b), so as to allow cyclical operation of the system to continue.
Inventors
- 👤 Michael Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/30; B21J15/32; B21J15/28; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53478; Y10T29/53487; Y10T29/53496; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/5373; Y10T29/53739; Y10T29/53743; Y10T29/53748; Y10T29/5377
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
Fastener installation apparatus for installing a fastener with a portion which is broken off at installation, which apparatus comprises: fastener installation means for installing a fastener and thereby producing a broken-off portion; conveying means for conveying the broken-off portion away from the installation means; and portion detection means operatively connected to the conveying means at a predetermined position therealong for detecting when the broken-off portion has reached said predetermined position on its journey along the conveying means.
Claim 2
Dependent Claim
77 words
Fastener installation apparatus for installing a fastener with a portion which is broken off at installation, which apparatus comprises: fastener installation means for installing a fastener and thereby producing a broken-off portion; conveying means for conveying the broken-off portion away from the installation means; and portion detection means operatively connected to the conveying means at a predetermined position therealong for detecting when the broken-off portion has reached said predetermined position on its journey along the conveying means.
Claim 3
Dependent Claim
30 words
Apparatus as claimed in claim 1, in which the aforesaid predetermined position is one at which the broken-off portion has completed or substantially completed its journey along the conveying means.
Claim 4
Dependent Claim
27 words
Apparatus as claimed in claim 2, including a receptacle into which the conveying means discharges the broken-off portion, and the aforesaid predetermined position is adjacent the receptacle.
Claim 5
Dependent Claim
16 words
Apparatus as claimed in claim 1, in which the conveying means comprises a pipe or hose.
Claim 6
Dependent Claim
23 words
Apparatus as claimed in claim 4, in which the aforesaid portion detection means comprises a proximity sensor positioned adjacent the pipe or hose.
Claim 7
Dependent Claim
70 words
Apparatus as claimed in claim 1, arranged to operate cyclically so as to install a plurality of fasteners successively, which apparatus includes control means responsive to the portion detection means and operative to allow the cyclical operation of the apparatus to continue to install a further fastener only upon the portion detection means detecting the presence at the aforesaid pre-determined position of the broken-off portion of the previously installed fastener.
References Cited (Backward Citations)
US3685716A
Cited
GB2130949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |