US4903522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pop riveter tool
Assignee: Individual
•
Filing: 1989-01-11
•
Granted: 1990-02-27
•
Expires: 2009-01-11
Abstract
Abstract The present invention relates to a riveting station including a hand-held tool for installing break stem fasteners. The tool has a vacuum ejection system for removing broken-off stems. The ejection system comprises a bore in the tool communicating with a source of vacuum air and a control device for applying the vacuum for a set period of time. The tool in a preferred embodiment also includes a system for feeding air through the bore to promote self-cleaning of the tool and/or substantially prevent popping of the fastener when the fastener is incorrectly positioned.
Inventors
- 👤 Thomas Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:28
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/105; B21J15/02; B21J15/04; B21J15/043; B21J15/16; B21J15/22; B21J15/30; B21J15/32; B21J15/326; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/5373; Y10T29/53739; Y10T29/53743; Y10T29/53748; Y10T29/5377
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A riveting station which comprises: a hand-held tool for installing break stem fasteners; said tool having a housing and means for grasping the stem of the fastener; means for ejecting said stem after said fastener has been installed; said ejecting means including a bore in said housing and a source of vacuum air communicating with said bore to suck said stem out of said bore; and means for applying said vacuum air to said bore for a timed period comprising a vacuum transducer, valve means for providing air to said transducer for said timed period, and a timing device for supplying a timed flow of pilot air to said valve means.
Claim 2
Dependent Claim
111 words
A riveting station which comprises: a hand-held tool for installing break stem fasteners; said tool having a housing and means for grasping the stem of the fastener; means for ejecting said stem after said fastener has been installed; said ejecting means including a bore in said housing and a source of vacuum air communicating with said bore to suck said stem out of said bore; and means for applying said vacuum air to said bore for a timed period comprising a vacuum transducer, valve means for providing air to said transducer for said timed period, and a timing device for supplying a timed flow of pilot air to said valve means.
Claim 3
Dependent Claim
20 words
A riveting station according to claim 1 wherein said ejecting means further includes a container for collecting each broken stem.
Claim 4
Dependent Claim
28 words
A riveting station according to claim 1 wherein said timing device has means for adjusting the period of time said pilot air is supplied to said valve means.
Claim 5
Dependent Claim
118 words
A riveting station which comprises: a hand-held tool for installing break stem fasteners; said tool having a housing and means for grasping the stem of the fastener; means for ejecting said stem after said fastener has been installed; said ejecting means including a bore in said housing and a source of vacuum air communicating with said bore to suck said stem out of said bore; means for applying said vacuum air to said bore for a timed period; and means for delivering a flow of air to said bore prior to application of said vacuum air to substantially prevent a fastener from being popped when it is in an improper position and for promoting self-cleaning of said tool.
Claim 6
Dependent Claim
118 words
A riveting station which comprises: a hand-held tool for installing break stem fasteners; said tool having a housing and means for grasping the stem of the fastener; means for ejecting said stem after said fastener has been installed; said ejecting means including a bore in said housing and a source of vacuum air communicating with said bore to suck said stem out of said bore; means for applying said vacuum air to said bore for a timed period; and means for delivering a flow of air to said bore prior to application of said vacuum air to substantially prevent a fastener from being popped when it is in an improper position and for promoting self-cleaning of said tool.
Claim 7
Dependent Claim
30 words
A riveting station according to claim 4 wherein said vacuum air applying means comprises a vacuum transducer and valve means for providing air to said transducer for said timed period.
Claim 8
Dependent Claim
60 words
A riveting station according to claim 5 further comprising: a source of air; trigger means on said tool for initiating a flow of air from said source and for providing a return air flow; a directional control valve for operating a power booster for providing hydraulic fluid to said tool; and said control valve communicating with said return air flow.
Claim 9
Dependent Claim
48 words
A riveting station according to claim 6 further comprising: means for providing a first portion of said return air flow to a timing device; and means for providing a second portion of said return air flow to said directional control valve to initiate operation of said power booster.
Claim 10
Dependent Claim
56 words
A riveting station according to claim 4 further comprising: a fitting connected to said tool; said fitting having a first passageway communicating with said bore and said vacuum air source for delivering said vacuum air to said bore; and said air delivery means comprises a second passageway in said fitting communicating with said first fitting passageway.
Claim 11
Dependent Claim
24 words
A riveting station according to claim 8 further comprising: a control valve; and said second passageway communicating with exhaust air from said control valve.
Claim 12
Dependent Claim
23 words
A riveting station according to claim 4 wherein said delivering means comprises means for delivering exhaust air from said tool to said bore.
References Cited (Backward Citations)
US3367166A
Cited
US3451248A
Cited
US4062217A
Cited
US4281531A
Cited
US4275583A
Cited
US4515005A
Cited
US4454746A
Cited
US4598571A
Cited
US4648258A
Cited
US4704888A
Cited
US4770023A
Cited
US4754643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |