Guide ring for a door knob assembly
US5411303A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | May 10, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/91
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a door knob assembly, a guide ring for a door fits within a rose member and provides a locator so the rose member is located exactly in the center of the round opening through the door, and provides additional strength to prevent movement of the door knob assembly in the door. The guide ring has guide tubes thereon that align with holes in the inside rose member. The guide tubes ensure that attachment screws to be threadably received in tapped holes in posts of the outside rose member are inserted axially parallel to both the axis of rotation of the door knob assembly and the posts. The guide ring ensures that the screws line up with tapped holes in posts of the outside rose member and do not float or drift out of such alignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.