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(12) Patent: | (11) CA 1171466 |
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(21) Application Number: | 1171466 |
(54) English Title: | AUTOMATIC STOP FOR RETRACTION IN AN EDM MACHINE |
(54) French Title: | BUTEE AUTOMATIQUE DE COURSE DE RETRAIT SUR MACHINE A USINER PAR ELECTROEROSION |
Status: | Term Expired - Post Grant |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | SWABEY OGILVY RENAULT |
(74) Associate agent: | |
(45) Issued: | 1984-07-24 |
(22) Filed Date: | 1981-11-04 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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ABSTRACT OF THE DISCLOSURE
The disclosure teaches an EDM machine hav-
ing a base supporting a workpiece, a ram reciprocable
on the base and a plurality of electrodes carried by
the ram to engage and drill the workpiece. In
accordance with the invention, a limit switch limits
the retraction movement of the ram in combination
with an actuator magnetically held on and movable
on the ram and an automatic stop device. The stop
device includes a member on the base in a position
to engage the actuator during the drilling movement
of the ram to adjust the position of the actuator
on the ram.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1171466 was not found.
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Description | Date |
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Inactive: IPC deactivated | 2011-07-26 |
Inactive: First IPC derived | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: Expired (old Act Patent) latest possible expiry date | 2001-11-04 |
Inactive: Expired (old Act Patent) latest possible expiry date | 2001-11-04 |
Inactive: Reversal of expired status | 2001-07-25 |
Grant by Issuance | 1984-07-24 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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UNITED TECHNOLOGIES CORPORATION |
Past Owners on Record |
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ROBERT L. KOSENSKI |