Adjustable control and lock means therefor, such as for use with an air-operated lubricator
US3955647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Sep 16, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/924
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An airline lubricator is disclosed with a tamper-proof, oil-metering adjuster provided for adjusting the quantity of oil delivered by the lubricator, and for preventing tampering or accidental readjustment. The tamper-proof construction for a selectively adjustable screw controller includes a lock therefor wherein an elongated, rotatable, screw controller is provided with a splined portion, and the stationary body is also splined for cooperation with an axially movable lock collar that normally engages both the splines on the controller and the splines on the body to prevent tampering or accidental readjustment, and with a removable knob-like adjuster provided to selectively move and disengage the lock collar and to then also effect selective screw adjustment of the controller. When the adjuster is removed, the device becomes substantially tamper proof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.