|Publication number||US2504152 A|
|Publication date||Apr 18, 1950|
|Filing date||Dec 14, 1945|
|Priority date||Dec 14, 1945|
|Publication number||US 2504152 A, US 2504152A, US-A-2504152, US2504152 A, US2504152A|
|Inventors||Molat Joseph H, Riker Robert T|
|Original Assignee||Molat Joseph H, Riker Robert T|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (45), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
April 18, 1950- R. T. RIKER 'E-TAL GRIPPER- Filed Dec. 14, 1945 INVENTORJ- /Poberz T Biker 0'' Joseph H Map/27 A TTOR/VEX Patented Apr. 18,1950 9 GRIPPER Robert T. Riker and Joseph H. Molat, New York, N. Y.
' Application December 14, 1945, Serial No. 635,130
3 Claims. (01. 294-20) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 O. G. 757) This invention relates in general to a device for moving fittings, and in particular to such a device for moving tubular fittings, such as elongated electric lamps, into and out of engagement with the supporting means therefor.
Fluorescent light fixtures and other fittings are often located in elevated positions or in other positions inaccessible to hand operation from the floor. In order to eliminate the necessity of stepladders, staging, or scafiolding it is often desirable to use an implement having a long handle for grasping and removing such fixtures. Fluorescent lamp fixtures, in particular, have a very limited space within which such an implement can be inserted.
An object of this invention is to provide a device of the type described that can be readily inserted into a fixture, such as a fluorescent lamp fixture, having a limited space between fitting and fixture.
Another object is to provide such a device having an improved mechanism for tightening the jaws thereof whereby said fittings can be firmly grasped.
Further objects and advantages of this invention, as well as its construction, arrangement and operation, will be apparent from the following description and claims in connection with the accompanying drawing, in which,
Fig. 1 is a side elevation view of the device of this invention, partially cut away, in order to show the novel working mechanism thereof,
Fig. 2 is an elevation view looking from the left side of Fig. 1, and
Fig. 3 is an elevation view showing the device in operation upon a fluorescent light tube.
The device of this invention, comprises an elongated handle H] of wood or other lightweight material, bored and threaded at one end, as at l2, and having mounted thereon a head or block It provided with a communicating channel 16. The head M can be so mounted on the handle as to allow rotation only, or can be merely placed thereon and held by the mechanism described below. A member 18 is disposed within the channel l6 and is provided with a threaded section 20 onto which the handle is screwed. Member I8 is axially slidable within the block [4 but is prevented from rotation therein by section 22 of square or other irregular shape in 00- operation with the lower portion of the channel It which is of corresponding irregular shape. The top part of channel P6 is enlarged so as to provide shoulders 24 upon which a washer 26 is seated. Disposed about member l8 and bearing on the washer 26 and upon another washer 28 is a spring 30. Washer 28, in turn, bears upon the lower portions of links 32 which are rotatably connected to the member as at 34. These links 32 are rotatably connected at their other ends I to a pair of spaced, resilient jaws 3B. These jaws 35 are further secured at the top of the block M by hinges 40. Links 32 form a toggle joint having the knee thereof at 34.
The jaws 36 are slightly elongated, as shown in Figures 2 and 3 and are shaped so as to accommodate a tubular fitting such as a fluorescent light'tube. Optionally, however, they can be shaped to accommodate other types of fittings. The jaws 36 are also provided internally with a flexible compressible material having a good gripping surface, such as soft rubber. Due to the spacing and shape of the jaws 36 they can be readily inserted into a fixture and around the fitting thereof, requiring very little clearance in excess of that required by the thickness of the jaws and internal padding.
In operation, the jaws 36 are opened by holding the block l4 and rotating the handle Ill so as to unscrew it from threaded portion 20 of the member l8. The spring 30 bearing upon washer 2'5 forces the head l4 downward relative to member I8 against the top of the handle 10 causing the jaws 36 to be spread apart due to the cooperation of the hinges 40 and the links 32. The jaws 36 are then placed about a fitting, such as fluorescent lamp tube 44 shown in Fig. 3, and the handle I0 is rotated in the opposite direction. This forces the head l4 upwards in relation to member l8 compressing spring 30 and causing links 32 to be drawn downwards, and in turn causing the jaws 36 to be drawn together.
In the changing of fluorescent lamp tubes if suflicient rotation of the tube cannot be effected by swinging the handle H] in order to unseat the tub from its socket, an auxiliary tube rotating device can be used. A device of this type is shown in my copending application, Serial No. 635,128, filed December 14, 1945, issued June 14, 1949 as Patent #2,4'72,858. Although applicant is aware of devices incorporating both clamping and r0- tating mechanism, these devices are often too bulky to operate in fixtures having limited space between fittings or between fittings and fixtures. The device of this invention in combination with an auxiliary tube twister is particularly useful in changing tubes in such fittings.
It is to be understood that various modifications and changes may be made in this invention without departing from the spirit and scope thereof as set forth in the appended claims.
The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
What is claimed is:
1. A gripper comprising a head having a channel therethrough, a pair of jaws hinged on said head, an element in said channel disposed for. sliding movement along the channel, means on said element engaging said head for restrainin said element against rotation in the bore, said element at one extremity extending. beyond said.
head and being screwed into a handle, a pair of links connecting the other end of the element with the jaws to form a toggle.j0int,, said head. being formed to provide a shoulder in thebore, a compression spring surrounding said element adjacent the toggle end and extending into the bore, said spring acting at one end against said shoulder and at the other end reacting against said element to urge the toggle end ofv the element away fromv said head and urge said handle into contact with said head, said handle upon rotation being effective to cause sliding of said element and actuation. of said toggle jointto open and close said jaws, said. handle at its area of contact with said head forming a stop to restrict movement of saidelement and closing of said jaws beyond a predetermined limit.
2. A gripper comprising a head, apairof jaws hinged on Said head, a pair of links connected to said jaws to form a toggle joint, an element con- '4 nected to the knee of the toggle joint and having a threaded portion extending slidably through said head, a handle mounted for screwing on said threaded portion and adapted to abut said head, and resilient means urging said handle into abutment with said head.
3. A gripper comprising a head, a pair of jaws hinged on said head, a pair of links connected to said jaws to form a toggle joint, an element connected to the knee of the toggle joint and having a threaded portion extending slidably through said head, a handle mounted for screwing on said threaded portion and adapted to abut" said head, and spring means urging said handle into abutment. with said head.
ROBERT T. RIKER. JOSEPH H. MOLAT.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 57.8.,39.4-. Dunn March 1897 1,187,316 Higby June,13, 1916 1,193,685v Harvey. Aug.v 8, 1916 1,704,491. Thompson Mar. 5,1929 1,853,598 Birkenmaier Apr. 12,1932 2,393,880 Beard Jan. 29-, 1946 FOREIGN PATENTS Number Country Date 234,804 Germany May 22, 1911
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US578394 *||Mar 9, 1896||Mar 9, 1897||Manipulating device for incandescent lamps|
|US1187316 *||Aug 19, 1915||Jun 13, 1916||Clifford Higby||Post-hole digger.|
|US1193685 *||Feb 15, 1915||Aug 8, 1916||Egbert t|
|US1704491 *||Aug 17, 1925||Mar 5, 1929||Joseph S Thompson||Tool for handling electric fuse tubes and the like|
|US1853598 *||May 12, 1928||Apr 12, 1932||Matthews W N Corp||Grapple|
|US2393880 *||Jul 27, 1944||Jan 29, 1946||Beard Charles L||Light tool|
|*||DE234804C||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4968078 *||May 24, 1989||Nov 6, 1990||Edwin Fitzwater||Adjustable compound-action clamp|
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|US8037591||Feb 2, 2009||Oct 18, 2011||Ethicon Endo-Surgery, Inc.||Surgical scissors|
|US8070759||May 30, 2008||Dec 6, 2011||Ethicon Endo-Surgery, Inc.||Surgical fastening device|
|US8075572||Apr 26, 2007||Dec 13, 2011||Ethicon Endo-Surgery, Inc.||Surgical suturing apparatus|
|US8100922||Apr 27, 2007||Jan 24, 2012||Ethicon Endo-Surgery, Inc.||Curved needle suturing tool|
|US8114072||May 30, 2008||Feb 14, 2012||Ethicon Endo-Surgery, Inc.||Electrical ablation device|
|US8114119 *||Sep 9, 2008||Feb 14, 2012||Ethicon Endo-Surgery, Inc.||Surgical grasping device|
|US8157834||Apr 17, 2012||Ethicon Endo-Surgery, Inc.||Rotational coupling device for surgical instrument with flexible actuators|
|US8172772||Dec 11, 2008||May 8, 2012||Ethicon Endo-Surgery, Inc.||Specimen retrieval device|
|US8211125||Aug 15, 2008||Jul 3, 2012||Ethicon Endo-Surgery, Inc.||Sterile appliance delivery device for endoscopic procedures|
|US8241204||Aug 29, 2008||Aug 14, 2012||Ethicon Endo-Surgery, Inc.||Articulating end cap|
|US8252057||Jan 30, 2009||Aug 28, 2012||Ethicon Endo-Surgery, Inc.||Surgical access device|
|US8262563||Jul 14, 2008||Sep 11, 2012||Ethicon Endo-Surgery, Inc.||Endoscopic translumenal articulatable steerable overtube|
|US8262655||Nov 21, 2007||Sep 11, 2012||Ethicon Endo-Surgery, Inc.||Bipolar forceps|
|US8262680||Mar 10, 2008||Sep 11, 2012||Ethicon Endo-Surgery, Inc.||Anastomotic device|
|US8317806||May 30, 2008||Nov 27, 2012||Ethicon Endo-Surgery, Inc.||Endoscopic suturing tension controlling and indication devices|
|US8337394||Oct 1, 2008||Dec 25, 2012||Ethicon Endo-Surgery, Inc.||Overtube with expandable tip|
|US8353487||Dec 17, 2009||Jan 15, 2013||Ethicon Endo-Surgery, Inc.||User interface support devices for endoscopic surgical instruments|
|US8361112||Jun 27, 2008||Jan 29, 2013||Ethicon Endo-Surgery, Inc.||Surgical suture arrangement|
|US8403926||Jun 5, 2008||Mar 26, 2013||Ethicon Endo-Surgery, Inc.||Manually articulating devices|
|US8409200||Sep 3, 2008||Apr 2, 2013||Ethicon Endo-Surgery, Inc.||Surgical grasping device|
|US8425505||Aug 25, 2011||Apr 23, 2013||Ethicon Endo-Surgery, Inc.||Electroporation ablation apparatus, system, and method|
|US8449538||Jan 27, 2010||May 28, 2013||Ethicon Endo-Surgery, Inc.||Electroporation ablation apparatus, system, and method|
|US8480657||Oct 31, 2007||Jul 9, 2013||Ethicon Endo-Surgery, Inc.||Detachable distal overtube section and methods for forming a sealable opening in the wall of an organ|
|US8480689||Sep 2, 2008||Jul 9, 2013||Ethicon Endo-Surgery, Inc.||Suturing device|
|US8496574||Dec 17, 2009||Jul 30, 2013||Ethicon Endo-Surgery, Inc.||Selectively positionable camera for surgical guide tube assembly|
|US8506564||Dec 18, 2009||Aug 13, 2013||Ethicon Endo-Surgery, Inc.||Surgical instrument comprising an electrode|
|US8529563||Aug 25, 2008||Sep 10, 2013||Ethicon Endo-Surgery, Inc.||Electrical ablation devices|
|US8568410||Apr 25, 2008||Oct 29, 2013||Ethicon Endo-Surgery, Inc.||Electrical ablation surgical instruments|
|US8579897||Nov 21, 2007||Nov 12, 2013||Ethicon Endo-Surgery, Inc.||Bipolar forceps|
|US8608652||Nov 5, 2009||Dec 17, 2013||Ethicon Endo-Surgery, Inc.||Vaginal entry surgical devices, kit, system, and method|
|US8652150||May 30, 2008||Feb 18, 2014||Ethicon Endo-Surgery, Inc.||Multifunction surgical device|
|US8679003||May 30, 2008||Mar 25, 2014||Ethicon Endo-Surgery, Inc.||Surgical device and endoscope including same|
|US8771260||May 30, 2008||Jul 8, 2014||Ethicon Endo-Surgery, Inc.||Actuating and articulating surgical device|
|US8828031||Jan 12, 2009||Sep 9, 2014||Ethicon Endo-Surgery, Inc.||Apparatus for forming an anastomosis|
|US8888792||Jul 14, 2008||Nov 18, 2014||Ethicon Endo-Surgery, Inc.||Tissue apposition clip application devices and methods|
|US8906035||Jun 4, 2008||Dec 9, 2014||Ethicon Endo-Surgery, Inc.||Endoscopic drop off bag|
|US8939897||Feb 4, 2011||Jan 27, 2015||Ethicon Endo-Surgery, Inc.||Methods for closing a gastrotomy|
|US8986199||Feb 17, 2012||Mar 24, 2015||Ethicon Endo-Surgery, Inc.||Apparatus and methods for cleaning the lens of an endoscope|
|US9005198||Jan 29, 2010||Apr 14, 2015||Ethicon Endo-Surgery, Inc.||Surgical instrument comprising an electrode|
|US9011431||Sep 4, 2012||Apr 21, 2015||Ethicon Endo-Surgery, Inc.||Electrical ablation devices|
|US9028483||Dec 18, 2009||May 12, 2015||Ethicon Endo-Surgery, Inc.||Surgical instrument comprising an electrode|
|US9049987||Mar 15, 2012||Jun 9, 2015||Ethicon Endo-Surgery, Inc.||Hand held surgical device for manipulating an internal magnet assembly within a patient|
|US9078662||Jul 3, 2012||Jul 14, 2015||Ethicon Endo-Surgery, Inc.||Endoscopic cap electrode and method for using the same|
|U.S. Classification||81/53.11, 294/115|