Window shade lock device
US4890354A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1988 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Sep 2, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The window shade lock device includes a handle having a round or elongated hand grip end and a slide connector extending forwardly thereof. The slide connector is pivotally secured, preferably off center, to the preferably generally rectangular body of a slide bearing four spaced, axled, rotatable wheels, two on each of two opposite sides thereof. The wheels are adapted to ride in parallel spaced channels in a window shade side frame. The wheels extend beyond the side margins of the slide body. The slide body extends out of the frame into connection with the connector front end outside the frame. The handle is pivotally movable up and down between a locked and unlocked position. When in the locked position the slide connector front end biases the slide, specifically the wheels thereof, tightly against the frame to hold the lock in position. In the unlocked position the slide connector front end biases and spaces the slide from the frame for free movement therein. Locking of the handle to the frame also locks a window shade secured at its lower end to the handle and/or slide by a shade connector in the form of a flexible or rigid strut or the like. The device is compact, simple and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.