Trowel
US4926519A · kind A · utility
4Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1989 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Apr 10, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/463
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic trowel wherein strength is achieved through use of a blade with a smooth lower side and with handle-retaining members integral with an upper side. Strengthening ribs are disposed on the upper side of the blade. A ribbed handle includes end portions having broad flat areas for contacting the upper face of the blade. Openings in the end portions engage bosses defining the handle-retaining members. The bosses are upset to fasten the handle to the blade. Fastening may be supplemented by cementing or ultrasonic welding the abutting surfaces of the end portions and the blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.