Patent US3689951A successfully refreshed from Google Patents.
US3689951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener installation system
Assignee: Huck Manufacturing Co
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Filing: 1970-05-07
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Granted: 1972-09-12
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Expires: 1990-05-07
Abstract
Abstract In a two piece fastener of the type including a bolt and a nut adapted to be threaded onto the bolt and thereafter crimped to provide a desired preload a system for setting the fastener including tool means for torquing the nut onto the bolt with a preselected torque and thereafter crimping the nut to provide the desired preload and control means to sequentially control the tool.
Inventors
- 👤 George J Van Hecke
- 👤 Robert D Cassell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:57
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B23P19/06; B25; B25B; B25B21/00; B25B21/001; B25B23/00; B25B23/14; B25B23/145; B25B23/1456; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/53765
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
116 words
A system for applying a nut to a bolt, comprising: tool means for securing the nut to the bolt and comprising torque means for torquing the nut onto the bolt and crimp means for crimping the nut, and control means actuable for controlling actuation of said tool means for sequencing the operation of said torque means and said crimp means, said control means being actuable in response to actuation by an operator, said crimp means being operable by fluid pressure, said control means including pressure responsive means actuable in response to a preselected first magnitude of fluid pressure to maintain said crimp means actuated even though said control means is no longer actuated by the operator.
Claim 2
Independent Claim
116 words
A system for applying a nut to a bolt, comprising: tool means for securing the nut to the bolt and comprising torque means for torquing the nut onto the bolt and crimp means for crimping the nut, and control means actuable for controlling actuation of said tool means for sequencing the operation of said torque means and said crimp means, said control means being actuable in response to actuation by an operator, said crimp means being operable by fluid pressure, said control means including pressure responsive means actuable in response to a preselected first magnitude of fluid pressure to maintain said crimp means actuated even though said control means is no longer actuated by the operator.
Claim 3
Dependent Claim
50 words
The system of claim 1 with said pressure responsive means being actuable to a preselected second magnitude of fluid pressure to permit deactuation of said crimp means, said second magnitude of fluid pressure being selected as indicative of the pressure at which a completed crimp to the nut has occurred.
Claim 4
Dependent Claim
32 words
The system of claim 2 with said control means including timing means actuable in response to actuation of said torque means for deactuating said torque means after a preselected, predetermined time interval.
Claim 5
Dependent Claim
18 words
The system of claim 3 with said timing means actuating said crimp means after said preselected time interval.
Claim 6
Independent Claim
162 words
A system for applying a nut to a bolt, comprising: tool means for securing the nut to the bolt and comprising torque means for torquing the nut onto the bolt and crimp means for crimping the nut, and control means actuable for controlling actuation of said tool means for sequencing the operation of said torque means and said crimp means, including a source of hydraulic fluid pressure, with said torque means including a hydraulically actuated motor and with said crimp means including a hydraulically actuated piston supported in a chamber for reciprocation, said motor having a fluid inlet for receiving fluid under pressure from said source and having a fluid outlet through one side of said chamber for returning fluid to the source, said control means including conduit means for connecting the opposite side of said chamber to the fluid under pressure from the source during actuation of said fluid motor whereby reciprocation of said piston will be precluded during such actuation.
Claim 7
Independent Claim
162 words
A system for applying a nut to a bolt, comprising: tool means for securing the nut to the bolt and comprising torque means for torquing the nut onto the bolt and crimp means for crimping the nut, and control means actuable for controlling actuation of said tool means for sequencing the operation of said torque means and said crimp means, including a source of hydraulic fluid pressure, with said torque means including a hydraulically actuated motor and with said crimp means including a hydraulically actuated piston supported in a chamber for reciprocation, said motor having a fluid inlet for receiving fluid under pressure from said source and having a fluid outlet through one side of said chamber for returning fluid to the source, said control means including conduit means for connecting the opposite side of said chamber to the fluid under pressure from the source during actuation of said fluid motor whereby reciprocation of said piston will be precluded during such actuation.
Claim 8
Dependent Claim
107 words
The system of claim 4 including a source of hydraulic fluid pressure, with said torque means including a hydraulically actuated motor and with said crimp means including a hydraulically actuated piston supported on a chamber for reciprocation, said motor having a fluid inlet for receiving fluid under pressure from said source and having a fluid outlet through one side of said chamber for returning fluid to the source, said control means including conduit means for connecting the opposite side of said chamber to the fluid under pressure from the source during actuation of said fluid motor whereby reciprocation of said piston will be precluded during such actuation.
Claim 9
Dependent Claim
107 words
The system of claim 4 with said control means including an electrical trigger switch actuable by the operator to actuate said control means and deactuable to deactuate said control means, said timing means actuated in response to actuation of said trigger switch, said pressure responsive means including a pressure responsive switch including normally open contacts and normally closed contacts defining a series circuit in parallel with said trigger switch, said pressure responsive means closing said normally open contacts in response to attainment of said first magnitude of fluid pressure and said normally closed contacts being opened in response to attainment of said second magnitude of fluid pressure.
Claim 10
Dependent Claim
107 words
The system of claim 6 with said control means including an electrical trigger switch actuable by the operator to actuate said control means and deactuable to deactuate said control means, said timing means actuated in response to actuation of said trigger switch, said pressure responsive means including a pressure responsive switch including normally open contacts and normally closed contacts defining a series circuit in parallel with said trigger switch, said pressure responsive means closing said normally open contacts in response to attainment of said first magnitude of fluid pressure and said normally closed contacts being opened in response to attainment of said second magnitude of fluid pressure.
Claim 11
Dependent Claim
93 words
The system of claim 1 with said control means including an electrical trigger switch actuable by the operator to actuate said control means and deactuable to deactuate said control means, said pressure responsive means including a pressure responsive switch including switching means in parallel with said trigger switch, said switching means responsive to attainment of said first magnitude of fluid pressure to provide a closed parallel circuit across said trigger switch and to provide an open parallel circuit across said trigger switch in response to attainment of said second magnitude of fluid pressure.
Claim 12
Dependent Claim
53 words
The system of claim 9 with said control means actuating said torque means in response to actuation of said trigger switch, said control means including timing means actuable in response to actuation of said trigger switch to deactuate said torque means after a preselected, predetermined time interval and to actuate said crimp means.
Claim 13
Dependent Claim
19 words
The system of claim 1 including, means for actuating the torque means, and means for actuating the crimp means.
Claim 14
Dependent Claim
19 words
The system of claim 5 including, means for actuating the torque means, and means for actuating the crimp means.
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |