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Publication numberUS942490 A
Publication typeGrant
Publication dateDec 7, 1909
Filing dateDec 4, 1908
Priority dateDec 4, 1908
Publication numberUS 942490 A, US 942490A, US-A-942490, US942490 A, US942490A
InventorsWilliam John Dunn
Original AssigneeWilliam John Dunn
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Telescopic article.
US 942490 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

W. J. DUNN.

TELESGOPIC ARTICLE.

APPLICATION FILED DEC. 4, 1908.

Patented Dec. 7, 1909.

Witnesses: 2

' f I WILLIAM JOHN DUN N, MONTREAL, QUEBEC, CANADA.

' 'TELESCOPIG Aivrrcme.

specification of Letters Patent.

s Application filed December 4, 1808. Serial No.'468,040.'

To all whom it may concern:

Be it known that, I, WILLIAM JOHN DUNN, a subject of the King of England, residing at the city of Montreal, in the Province of Quebec, Canada, have made a certain new and useful Improvement in Telescopic Articles, of which the following is a specification,

My invention relates to telescopic articles, such as tent poles, handles, rods, etc.

The object of my invention is to provide an article comprising a plurality of telescoping sections, with means for locking the.

sections against longitudinal movement; to

provide means for strengthening the arti-- cle at its joints, which strengthening means also serves to cover the locking means; and,

to provide means for preventing axial movement of the sections, at the same time permittin free longitudinal movement thereof when t e sections are unlocked.

A further object is to provide a slmple "means for closing the upper end of the uppermost section when the article is designed or use as a tent pole.- I

My invention consists of the construction, combination and arrangement of parts, as herein illustrated, described, and claimed.

In the accompanying drawin s, forming part of this application, I have i lustrated a form of embodiment of my invention in which drawings similar reference characters designate corresponding parts, and in which:

re. 1 is an elevation partlyfin section,

showing a section extended; and, Fig. 2

shows a section on line 2-2 of Fig. 1.

Referring to the drawin s, 1 designates a plurality of tapered, tubular telescopic sections, in the end of one of which is disposed a block 2 carrying a spur 3. The pin 4 is disposed through the block and spur and through the wall of the section 1 leaving a slight projecting end to serve as a stop for the ferrules hereafter described.

Disposed in the lower end of each of the sections 1 is a block 5 provided with a recess 6. The spring pressed plunger 7 is disosed in the recess and is arranged to work into an o ening 8 provided in each of the upper en s of the sections 1, so that when the sections T are e xtended the will, be

is a ferrule 9 provided with a lower splayed edge 10. When the sections 1 are extended and locked the ferrules 9 are forced intoposition where the form a strengthening-band for the joints ormed between the ends of the sections 1 and at the same time they cover the locking means and prevent the ingress of dirt etc. When the sections 1 are closed or telescoped into each other the projecting end of the pin 4,.prevents' the ferrule 9 from being displaced entirely from the article.

To prevent axial movement.of the sections 1 with relation to each other so that the plungers 7 always register with the openings 8, and to prevent 'bindin each of the sections 1 is provided with'a ongitudinal rib 11, the ribs in each succeeding section fitting closely into the rib of each preceding sectlon.

Patented Dec. 7-, i909.

a spring pressed plunger in each of said recesses arranged to work in openings provided in the ends of the sections and fer-rules disposed on the sections and provided with splayed ends arranged to work .over the plungers. v 2. A telescopic article comprising a plurality of longitudinally movable sectlons provided with recesses, a plunger adapted to work in each of said recesses, ferrules disposed on the sections and provided with splayed ends adapted to work over the plungers, and means for preventing axial movement of the sections.

3. A telescopic article comprising a plurality of movable sections rovided with longitudinal ribs, each of sai sections having a recess in one end thereof, a spring pressed plunger in each recess, and ferrules mounted on the sections and provided with splayed ends arranged to 'work over the 4. A telescopic article comprising a pluwith splayed ends to coverthe p1ungers,subrality of sections provided with ribs adapted stantialiy as described. 10 to prevent axial movement of the sections, Inwitness whereof I have hereunto set my each of said sections having a recess in one hand in the presence of two witnesses.

5 end thereof, asp ring pressed plunger in each WILLIAM JOHN DUNN. of said recesses arranged to work in openings 1 Witnesses:

provided in the ends of the sections, and fer- STUART R. W. ALLEN,

7 rules mounted on the sections and provided E. R. MCKENZIE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2641012 *Feb 12, 1948Jun 9, 1953Fred O StorrsTelescopic brush handle
US2722970 *Jan 2, 1952Nov 8, 1955William C UphoffExtension for a tubular chair leg
US2738815 *Jul 27, 1953Mar 20, 1956Hoeldtke Carl WAxe with extensible handle
US2819547 *Jan 18, 1954Jan 14, 1958Clements Jr Jacob DSubterranean telescoping signs
US2821834 *Oct 26, 1954Feb 4, 1958Walker Earle FCollapsible rake
US2937832 *Aug 22, 1958May 24, 1960Treiber Kenneth LCarrying device
US2980456 *Aug 14, 1959Apr 18, 1961Mcmullin Earl LTelescoping pole
US2993222 *Mar 17, 1959Jul 25, 1961Laymon Freel AFeather duster
US3103375 *Apr 7, 1961Sep 10, 1963Mcmullin Earl LTelescoping pole
US3468052 *Jan 3, 1967Sep 23, 1969Pflueger CorpButt extension for a fishing rod
US3706189 *Feb 4, 1972Dec 19, 1972Harry T RutherfordSafety mower and leaf harvester-mulcher
US3805385 *Oct 11, 1972Apr 23, 1974Sunbeam CorpHousing for a portable grass shear
US5446964 *Jul 22, 1993Sep 5, 1995Wci Outdoor Products, Inc.Apparatus and method for packaging and assembling a flexible line trimmer
US5593196 *Nov 29, 1994Jan 14, 1997Hastings Fiber Glass Products, Inc.Telescopic hot stick
US5594990 *Feb 21, 1995Jan 21, 1997Wci Outdoor Products, Inc.Lawn trimming and edging apparatus having motor housing rotatable on extendable handle
US5634322 *Jun 7, 1995Jun 3, 1997Wci Outdoor Products, Inc.Method for assembling and packaging a flexible line trimmer
US6595713 *Nov 9, 2000Jul 22, 2003Lendal Products LimitedLocking system
US7168128 *Oct 14, 2003Jan 30, 2007Dyson Technology LimitedWand assembly for a domestic appliance
US7350267 *Feb 27, 2002Apr 1, 2008Dyson Technology LimitedWand assembly for a domestic appliance
US7802340Mar 20, 2006Sep 28, 2010S.C. Johnson & Son, Inc.Extendable cleaning implement having two support heads
US7877837Aug 21, 2003Feb 1, 2011Dyson Technology LimitedCleaning appliance including a telescopic wand assembly retainer
US7886396Sep 30, 2005Feb 15, 2011S.C. Johnson & Son, Inc.Adjustable holder for cleaning implement having two support heads
US8123428 *Mar 19, 2009Feb 28, 2012CignysMethod and apparatus for locking telescoping members
US20040078925 *Feb 27, 2002Apr 29, 2004Evans Nicholas AlexanderWand assembly for a domestic appliance
US20040111828 *Oct 14, 2003Jun 17, 2004Dyson LimitedWand assembly for a domestic appliance
US20050198764 *Aug 21, 2003Sep 15, 2005Dyson Technology LimitedCleaning appliance
US20060085943 *Aug 21, 2003Apr 27, 2006Dyson Technology LimitedCleaning appliance including a tellscopic wand assembly retaining means
US20060191089 *Sep 30, 2005Aug 31, 2006S.C. Johnson & Son, Inc.Adjustable holder for cleaning implement having two support heads
US20060288508 *Mar 20, 2006Dec 28, 2006Knopow Jeremy FExtendable cleaning implement having two support heads
US20090191966 *Jan 28, 2008Jul 30, 2009William RossVideo Game Controller
US20100239362 *Mar 19, 2009Sep 23, 2010CignysMethod and apparatus for locking telescoping members
US20110101716 *Oct 30, 2009May 5, 2011Matthew NolteUtility pole with removable supporting push button
US20110114118 *Jan 25, 2011May 19, 2011Yan GracindoMethod of using an adjustable tool supporting a cleaning implement
EP1403008A2 *Sep 26, 2003Mar 31, 2004Techtronic Industries Co., Ltd.Coupling for split-boom power tool
EP1403008A3 *Sep 26, 2003Apr 7, 2004Techtronic Industries Co., Ltd.Coupling for split-boom power tool
Classifications
Cooperative ClassificationY10S56/18, A45B9/00