EP 4223374 A1 20230809 - PROTECTION DEVICE FOR USE IN CLIMBING
Title (en)
PROTECTION DEVICE FOR USE IN CLIMBING
Title (de)
SCHUTZVORRICHTUNG ZUM KLETTERN
Title (fr)
DISPOSITIF DE PROTECTION DESTINÉ À ÊTRE UTILISÉ DANS L'ESCALADE
Publication
Application
Priority
GB 202201549 A 20220207
Abstract (en)
A protection device for use in climbing of the type known as a "spring-loaded camming device" - abbreviated "SLCD" - is disclosed. The camming device comprises a a shaft (10) and a head (14) mounted on the shaft. The head includes a plurality of cam lobes (20) carried on at least one cam axle (16), each cam lobe being capable of rotation about a pivot axis centred on the cam axle, with an increasing lobe angle ω between a retracted position and an expanded position. Each cam lobe has a cam surface (30) that extends about the axis with a working range of contact angles ω<sub>min</sub> ≤ ω ≤ ω<sub>max</sub>. The cam surface (30) is at a radial distance r from the axis that continually increases with ω. In at least one of the cam lobes (20) the distance r of the cam surface from the axis is a modified logarithmic spiral that has a cam angle α that decreases with an increase in ω; The head also has biasing means that operate to bias the cam lobes towards the expanded position.
IPC 8 full level
A63B 29/02 (2006.01)
CPC (source: EP GB)
A63B 29/024 (2013.01 - EP GB)
Citation (applicant)
- EP 2853296 A1 20150401 - DMM INTERNAT LTD [GB]
- US 2005037023 A1 20050217 - FIELD JOHN E [US]
- US 7740223 B2 20100622 - FIELD JR JOHN E [US]
- US 7802770 B2 20100928 - FIELD JR JOHN E [US]
Citation (search report)
- [X] US 4645149 A 19870224 - LOWE GREG E [US]
- [X] GB 2158540 A 19851113 - EDELMANN & RIDDER GMBH & CO
- [X] US 2006231708 A1 20061019 - ROBERTSON BRYSON D R [CA], et al
- [X] WO 9710877 A1 19970327 - BANNER HUGH IRVING [GB]
- [X] US 5860629 A 19990119 - REED MAX W [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 23152531 A 20230119; GB 202201549 A 20220207