Silencer
US5988089A · kind A · utility
Inventor
Key dates
| Filing date | Dec 14, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Dec 14, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2015/0091
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Two spaced halyard restraining devices that are fixed to spreaders attached to a sailboat's mast. The two spaced spreaders are horizontally disposed from and fixed to opposite sides of an interposed vertically disposed mast. The halyard restraining devices are identical and each is shaped like a U-shaped bracket having one leg fixed to a spreader while another outer leg is a longer leg with a rounded free end. Each restraining device has a legs joining bight portion with the opened side facing generally either towards the boat's bow or stern. The halyard or the like are pulled into engagement with the device's bight portion to restrain their movement towards the mast by placing them under increased tension. To accommodate two different common cross sectional types of spreaders, round or wing shaped, the outer opposite side bearing surfaces of the inner leg may be shaped differently to complement these two types of spreader's shapes thus allowing for their dual-use with two different shaped spreaders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.