Exposed shackle padlock
US3952559A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1974 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | May 10, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7763
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An exposed shackle padlock including a casing and a U-shaped shackle movable between an outer open position and an inner locked position. A fence plate is supported for rocking movement within the casing about a pivot lug between locking and unlocking relations with a notch in a shorter leg of the shackle. One or more peripherally gated rotatable tumbler wheel members adjacent a fence formation on the fence plate normally prevent its movement to the unlocking position and may form either a key operated locking mechanism or a dial operated combination locking mechanism. The tumbler members in the combination lock form are scrambled during opening movement of the shackle and the fence plate is displaceable relative to the pivot lug to permit return of the shackle to locked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.