GB2328707A - A stop bolt or door stop arrangement - Google Patents

Abstract

A stop bolt or door stop arrangement wherein an axially movable bolt 5 is toggled between an engaged or extended first position, as shown, and a disengaged or retracted second position by means of axial displacement of the bolt in a housing 7 wherein the bolt has a lateral guide pin (9, Fig 3 not shown) engaging in a cam groove, Fig 4, in a bush B fixed in the housing and wherein the bolt is spring biassed towards the first position. The camming groove, Fig 4, is provided on the inner cylindrical surface of the bush B and is in a form, as shown which provides a bistable, extended or retracted condition for the bolt on successive depressions of the bolt in its housing. The bolt may be foot actuated and may incorporate a rubber cap 1 covering the bolt head.

Description

SECURITY DOOR DEVICE - THE STUMPERN lzSCRIP TIOW SOURCE OF IDEA Combination of: Neighbours' Break-in Complaints (Malaysia + N Ireland) Analysis of retractable object Discussions DEVELOPMENT Market Research: Collecting information Crime statistics Questionaire Discussion Group Design Schematic Drawings Internal Mechanics Other areas considered include: Mechanical Parts Design Technological + Financial Viability eg Manufacturing Costs + Material Selection Environmental + Social Policies eg Safety, Legislation + Standards SUCCESSES r Feasible Technically possible Cost effective CONCEPTUAL DESIGN DIAGRAMS KEY FOR "THE STUMPER" PAGE 1/2 FIG 1 - CROSS-SECTIONAL SIDE VIEW 1 - Rubber cap to protect door bashes 2 - Enclosure for final hold of other components 3 - Raw bolts for assembly of components of device 4 - Bushes A and B for ease of sliding, restriction of movement where necessary and reduction of friction - CONTROL MOVEMENT 5 - Main cyclinder where toepress similar to piston up and down movement 6 - Spring to pop up cylinder 7 - Casing for the whole device FIG 2 - PLAN 8 - Additional M12 raw plug bolts for installation onto floor PAGE 2/2 FIG 3 - SECTION WHERE MOVEMENT CONTROL IS 4 - Bush B with specially designed cam 9 - Pin guide to go on groove of cam FIG 4 - CAM THAT GUIDES AND CONTROL MOVEMENT 10 - ab - Downward movement with single toepress into the floor 11 - bc - Spring pushes cylinder up to remain in stationary position c 12 - cd - Upward movement with another single toepress helped by spring, to stationary position d. Cylinder is protruding out of the floor QUALITIES OF THE "STUMPERu l.Safer means 2 Stronger 3.Robust(can withstand bashes or forcing up to more than twice standard B53621:1980 thief resistance locks forces of 13500 N) 4. Impact resistant 5.Ease of use 6.Cheaper than most security devices with essential functions 7.Durable - fatigue resistant 8.Not visible to intruder 9.Not accessible for 'foreign' bodies 10.Does not damage door during use FEATURES OF THE uSTUMPER l.Spring-loaded - so that it can bounce up 2.Body-weight operated 3.Minimal friction material 4.Very rigid/no bending device S.Disappears into floor/invisible - do not get in the way of anything during use and safe 6. 'Bumper' - do not destroy door 7.Very easy to work - need no prior knowledge 8.Not accessible - out of sight of intruder.

(See following Schematic Diagrams of Conceptual Design) CONCEPTUAL DESIGN DIAGRAMS KEY FOR "THE STUMPER" PAGE 1/2 FIG 1 - CROSS-SECTIONAL SIDE VIEW 1 - Rubber cap to protect door bashes 2 - Enclosure for final hold of other components 3 - Raw bolts for assembly of components of device 4 - Bushes A and B for ease of sliding, restriction of movement where necessary and reduction of friction - CONTROL MOVEMENT 5 - Main cyclinder where toepress similar to piston up and down movement 6 - Spring to pop up cylinder 7 - Casing for the whole device FIG 2 - PLAN 8 - Additional M12 raw plug bolts for installation onto floor PAGE 2/2 FIG 3 - SECTION WHERE MOVEMENT CONTROL IS 4 - Bush B with specially designed cam 9 - Pin guide to go on groove of cam FIG 4 - CAM THAT GUIDES AND CONTROL MOVEMENT 10 - ab - Downward movement with single toepress into the floor 11 - bc - Spring pushes cylinder up to remain in stationary position c 12 - cd - Upward movement with another single toepress helped by spring, to stationary position d. Cylinder is protruding out of the floor

Claims (1)

1. CLAIX (S) (including Schema tic Diagrams description) THE PRODUCT - THE "STUMPERN AND ITS FUNCTION The product will be capable of preventing all side hinged door types from being forced open form the outside. The product will allow opening at a safe distance with the device in operation.

   However, it is stronger, more secure and inaccessible from outside than other similar door devices.

   The product will be bolted to the floor and will extend and retract with a single toes press. It will be simple to operate and will be suitable for use particularly by old and disabled people. When the product is retracted it will not be unobtrusive. The door will be able to open and close freely with the product retracted.

   The product will be suitable for retrofitting to premises with both suspended and solid floor types, but will be particularly suitable for fitting to new houses.

   Other uses include: For doors other than front door, as door stops to keep doors open completely ajar.

   Acts as a secondary lock at night when extended.

   A few over bigger premises entrances acts as multi-security device.