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Incrementing Fluid Motor

IP.com Disclosure Number: IPCOM000095296D
Original Publication Date: 1965-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Jakubowski, M: AUTHOR

Abstract

The fluid motor obtains uniform increments of movement in response to signals of nonuniform duration. Such are realized by using a phasing plate in conjunction with an auxiliary control valve. Vane motor 1 has supply passage 2 and exhaust passage 3 each communicating with corresponding supply port 4 and exhaust port 5 in port plate 6. Ports 4 and 5 respectively communicate with supply duct 8 and exhaust duct 9 and are aligned with respective supply and exhaust ports 10 and 11 in cover plate 12. Port 10 is connected to the pressurized supply fluid and port 11 leads to a sump.

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Incrementing Fluid Motor

The fluid motor obtains uniform increments of movement in response to signals of nonuniform duration. Such are realized by using a phasing plate in conjunction with an auxiliary control valve.

Vane motor 1 has supply passage 2 and exhaust passage 3 each communicating with corresponding supply port 4 and exhaust port 5 in port plate 6. Ports 4 and 5 respectively communicate with supply duct 8 and exhaust duct 9 and are aligned with respective supply and exhaust ports 10 and 11 in cover plate 12. Port 10 is connected to the pressurized supply fluid and port 11 leads to a sump.

Phasing plate 13 is keyed to motor shaft 14 and has a plurality of slots 15. These are spaced to alternately close and open ports 10 and 11 simultaneously to respective passages 2 and 3 during rotation of shaft 15. Ducts 8 and 9 are controlled by valve 16. This is connected, in turn, to common actuator 17 such as an electromagnet. Supply duct 7 and port 10 can be commonly connected to the supply pressure.

In operation, a short pulse actuates electromagnet 17. Such opens passage 2 to supply pressure and opens passage 3 to exhaust causing shaft 14 to rotate. The pulse is allowed to terminate, closing valve 16. The slight displacement of shaft 14 moves plate 13 sufficiently to connect port 10 with passage 2 and port 11 with passage 3 through partially aligned slots 15. Motor 1 rotation continues independently until slots 15 move sufficiently out of alignment to cut off p...