Black & Decker Manufacturing Co., Ltd. - Assigned Patents

Manufacturers Index - Black & Decker Manufacturing Co., Ltd.

Black & Decker Manufacturing Co., Ltd.
Towson, MD, U.S.A.
Company Website: http://www.blackanddecker.com/
Manufacturer Class: Wood Working Machinery

Patents

This page contains information on patents issued to this manufacturer.

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Patent Number	Date	Title	Name	City	Description
1,229,401	Jun. 12, 1917	Drill gearing	Alonzo Galloway Decker	Orangeville, MD	"The primary object of this invention is the provision in a portable drill of a variable speed disk drive between the power motor of the drill and the chuck spindle or such other member as drives the drill directly. Another object of the invention is to utilize an element of this disk drive as a fan for creating an air draft to cool the motor."
		Drill gearing	Samuel Duncan Black	Baltimore, MD
1,245,860	Nov. 06, 1917	Electrically-driven tool	Alonzo Galloway Decker	Baltimore, MD	This important patent marks the beginning of the modern era of the handheld electric drill: it is the first pistol-grip drill with a trigger switch. The primary innovation covered by the patent is to place an on-off trigger switch in the handle of the drill.
		Electrically-driven tool	Samuel Duncan Black	Baltimore, MD
D57,576	Apr. 26, 1921	Design for a portable electric tool	Alonzeo G. Decker	Towson, MD
		Design for a portable electric tool	Samuel Duncan Black	Towson, MD
D57,812	May. 10, 1921	Design for a housing for electric air compressors and motors	Alonzo G. Decker	Baltimore, MD
		Design for a housing for electric air compressors and motors	Samuel Duncan Black	Baltimore, MD
1,463,305	Jul. 31, 1923	Pumping apparatus	Alonzo Galloway Decker	Baltimore, MD	Of interest because it is an early patent to Mr. Black and Mr. Decker. The patent is assigned, by mesne assignments, to the Maryland Trust Co. It is likely that the original work was done for the first, Baltimore-based, incarnation of Black & Decker, which appears to have encountered financial difficulties and been reborn a couple of years later as a Towson-based business.
		Pumping apparatus	Samuel Duncan Black	Baltimore, MD
1,492,095	Apr. 29, 1924	Electrically-driven tool	Alonzo Galloway Decker	Baltimore, MD	An improvement to patent 1,245,860; the improvement is to the on-off switch to address a problem with unequal contact force in a pair of contacts.
		Electrically-driven tool	Samuel Duncan Black	Baltimore, MD
1,548,020	Aug. 04, 1925	Reversing means for electric tools	Alonzo Galloway Decker	Baltimore, MD
		Reversing means for electric tools	Samuel Duncan Black	Baltimore, MD
1,574,020	Feb. 23, 1926	Electric-cord protector	Alonzo Galloway Decker	Baltimore, MD	The invention is the molded-rubber strain relief for the electrical cord. Previous strain reliefs had been made either from coiled wire or a uniform-cross-section length of rubber hose. Messrs. Black and Decker had the idea of using a rubber strain relief similar to a length of rubber hose, but of decreasing cross-sectional thickness so as to distribute the bending forces over a length of the cord.
		Electric-cord protector	Samuel Duncan Black	Baltimore, MD
1,633,389	Jun. 21, 1927	Electric tool	Walter Stumpf	Baltimore, MD
1,647,396	Nov. 01, 1927	Rotary tool with key pocket	Alonzo Galloway Decker	Baltimore, MD
1,649,060	Nov. 15, 1927	Portable power-driven rotary tool with spindle latch and hand-operated chuck	Alonzo Galloway Decker	Baltimore County, MD
1,689,460	Oct. 30, 1928	Rivet spinning attachment	Walter Stumpf	Baltimore County, MD	Conversion Tool
1,699,870	Jan. 22, 1929	Portable tool	Alonzo Galloway Decker	Baltimore, MD	"The object of the present invention is to product a tool which can be used as a combined screw driver or socket wrench and drill." The innovation is a clutch that can be disabled when the tool is used as a drill.
		Portable tool	Samuel Duncan Black	Baltimore, MD
1,702,245	Feb. 19, 1929	Electrical connection for portable electric tools	Alonzo Galloway Decker	Baltimore, MD	Improved means of electrically connecting the cord to the drill. The improvements are to extend the service life of the cord, and ease replacement of the cord when necessary.
		Electrical connection for portable electric tools	Samuel Duncan Black	Baltimore, MD
1,752,422	Apr. 01, 1930	Portable electric tapper	Alonzo Galloway Decker	Baltimore County, MD
1,784,133	Dec. 09, 1930	Electric drive for grinder wheels	Alonzo G. Decker	Baltimore, MD	This patent is notable because the inventor is the co-founder of Black & Decker, which at the time of the patent was already quite successful. Decker was still with the company, so why did he assign an invention to someone else? A possible clue is in patent 1,911,857, where Marschke Mfg. Co. is identified as being from Towson, Maryland, which was (and is) the hometown of Black & Decker. Perhaps Marschke Mfg. was acquired by B&D.
2,038,422	Apr. 21, 1936	Bench drill stand	Alonzo G. Decker	Baltimore, MD	An example is seen labeled as a "Van Dorn No. 60 Bench Drill Stand". The same label gives "The Van Dorn Electric Tool Co. Towson, MD., U.S.A. Div. of Black & Decker Mfg. Co."
D104,623	May. 25, 1937	Design for a clamp handle	Alonzo G. Decker	Towson, MD	Term of patent 7 years.
2,155,082	Apr. 18, 1939	Portable electric tool and casing	Alonzo Galloway Decker	Towson, MD	This is the Black & Decker "Shorty" drill. The patent drawings suggest that it was inspired by a need in the aircraft industry to drill rivet holes in tight quarters.
2,225,091	Dec. 17, 1940	Portable power driven screw or bolt driving and nut running machine	Glenn C. Wilhide	Baltimore County, MD	This patent number was seen on a Black & Decker No. 8-CD Scrugun, along with patent number 1,574,020, which covers the cord strain relief.
D129,046	Aug. 19, 1941	Design for a portable power driven tool unit	Glenn C. Wilhide	Baltimore County, MD
D131,656	Mar. 17, 1942	Design for a portable power unit	Alonzo G. Decker	Baltimore County, MD
D131,657	Mar. 17, 1942	Design for a portable electric screw driver unit	Alonzo G. Decker	Baltimore County, MD
D131,658	Mar. 17, 1942	Design for a portable power driven screw driver unit	Alonzo G. Decker	Baltimore County, MD
D131,659	Mar. 17, 1942	Design for a portable power tool unit	Alonzo G. Decker	Baltimore County, MD
2,362,938	Nov. 14, 1944	Bearing support	Harold O. Short	Baltimore County, MD	This patent number was seen on a Black & Decker No. 655 3/4-inch mag drill.
2,394,348	Feb. 05, 1946	Electric screw driver and nut runner	Glenn C. Wilhide	Baltimore County, MD	Seen on a Black & Decker Scrugun.
2,477,915	Aug. 02, 1949	Illuminated eyeshield	Glenn C. Wilhide	Towson, MD
2,487,011	Nov. 01, 1949	Switch assembly for portable electric tools	Glenn C. Wilhide	Towson, MD
2,711,461	Jun. 21, 1955	Portable electric tool handle assemblies	Reynold Happe	Pittstown, NJ	This invention removes the need for screws to secure the switch in the handle of an electric drill, and was used on the Black & Decker Models U-1 and U-3 1/4-inch electric drills, as seen in a 1957 advertisement. Examples are labeled with the patent number. The assignee, sewing-machine maker Singer Mfg. Co., had a division, Diehl Mfg., that made electrical products as well as handheld power tools that were primarily sold under the Sears "Craftsman" brand. It seems most plausible that Singer/Diehl manufactured the switch itself which was then used by B&D.
D178,426	Jul. 31, 1956	Portable electric jig saw	Harry J. Foell Jr.	Towson, MD
		Portable electric jig saw	Robert H. Riley Jr.	Towson, MD
2,833,320	May. 06, 1958	Wide board saw apparatus	Richard C. Bennett	Laceyville, PA	This just might be the first vertical panel saw; such a machine became necessary once plywood and other sheet material became commonplace. (See, however, patent 2,347,359, which was intended for making panels out of hardwood strips but which contains the idea of a vertical panel saw.) Bennett's design was manufactured by the inventor's own company, then by DeWalt, which had just been purchased by Black & Decker. Before the sale to DeWalt, Bennett made some improvements to this invention; see patent 2,973,020.
2,874,985	Feb. 24, 1959	Drill chuck and spindle connection	Clifton J. March	Phoenix, MD	This patent number was seen on a Black & Decker No. 655 3/4-inch mag drill.
606,864	Oct. 18, 1960	Wide board saw apparatus	Richard C. Bennett	Laceyville, PA	See US patent 2,833,320.
2,973,020	Feb. 28, 1961	Apparatus for sawing wide boards	Richard C. Bennett	Laceyville, PA	Improvements to the inventor's patent 2,833,320.
623,872	Jul. 18, 1961	Apparatus for sawing wide boards	Richard C. Bennett	Laceyville, PA	See US patent 2,973,020.
D191,570	Oct. 10, 1961	Portable electric jig saw	Walter M. Downs	Towson, MD
D200,865	Apr. 13, 1965	Belt sander	Harper Landell	Whitemarsh, PA
3,192,814	Jul. 06, 1965	Work fence for radial arm saw machine	Christian B. Zimmerman	Lancaster, PA
3,192,816	Jul. 06, 1965	Traverse control means for power tool	Christian B. Zimmerman	Lancaster, PA
D201,755	Jul. 27, 1965	Portable power-operated sander	Marshall B. Johnson	Bel Air, MD
3,213,908	Oct. 26, 1965	Work hold-down for power-operated panel saw	Harold C. Cassey	Landisville, PA	Invention is a "resiliently-mounted work hold-down device which steadies the panel and prevents it from vibrating during the cutting operation."
		Work hold-down for power-operated panel saw	Ewald Schutz	Lancaster, PA
D205,080	Jun. 21, 1966	Belt sander	Marnie C. Averitt	Timonium, MD
3,540,499	Nov. 17, 1970	Radial arm saw construction	Francis J. Rosenthal Jr.	Fork, MD
		Radial arm saw construction	Martin I. Sheps	Baltimore, MD
3,565,135	Feb. 23, 1971	Miter adjustment for radial-arm saw	Francis J. Rosenthal Jr.	Fork, MD
		Miter adjustment for radial-arm saw	Leonard U. Alsruhe	Towson, MD
3,565,136	Feb. 23, 1971	Depth of cut adjustment construction for a radial-arm saw	Francis J. Rosenthal Jr.	Fork, MD
3,565,137	Feb. 23, 1971	Ball track carriage construction	Leonard U. Alsruhe	Towson, MD
3,586,076	Jun. 22, 1971	Rip lock for radial arm saw	Francis J. Rosenthal Jr.	Fork, MD
		Rip lock for radial arm saw	Leonard U. Alsruhe	Towson, MD
3,615,087	Oct. 26, 1971	Workbenches	Ronald Price Hickman	, England	This invention became the Black & Decker Workmate. About 50 million Workmates were sold during the term of the patent. Hickman sold the patent rights to Inventec International Ltd., which licensed it to Black & Decker. The patent was subject to considerable litigation; the inventor and has assignee had to be forced to participate in at least one of the earlier suits: Black & Decker filed suit against Hempe Manufacturing Co., and, after Inventec declined to participate, the United States Court of Appeals, Eight Circuit, ruled that the suit could not proceed without Inventec's participation, and Black & Decker convinced the court to name Inventec as an "involuntary plaintiff". Hempe's infringing product was the "Porta Bench" which the manufactured for Sears, Roebuck, and the court ruled against Hempe. Another lawsuit involving this patent was the 1978 Black & Decker v. Emerson Electric; Emerson Electric was manufacturing the "Porta Bench" portable workbench for Sears, Roebuck, and was promptly sued by B&D (Sears was also sued by B&D but due to an indemnification agreement, Emerson covered Sears' costs and was the lead defendant.) Emerson counter-sued to declare this patent and 4,076,229 invalid.
3,841,619	Oct. 15, 1974	Workbenches	Ronald Price Hickman	, England	Improvements to the original B&D Workmate patent, 3,615,087. See the earlier patent for more information on the inventor and on patent litigation.
4,076,229	Feb. 28, 1978	Workbenches	Ronald Price Hickman	, England	Improvements to the original B&D Workmate patent, 3,615,087. These two patents were both heavily litigated; see the earlier patent for more information on the inventor and the litigation. As a result of litigation, this patent was disclaimed after October 26, 1988.
4,276,799	Jul. 07, 1981	Power tool apparatus	Anthony A. Muehling	Detroit, MI	The innovation is a one-handed coarse and vernier blade-height adjustment combined with bevel adjustment.
5,927,357	Jul. 27, 1999	Portable wood planing machine	Louis M. Shadeck	Timonium, MD
		Portable wood planing machine	Barry D. Wixey	Finksburg, MD
		Portable wood planing machine	P. Brent Boyd	Stewartstown, PA
		Portable wood planing machine	Michael L. O'Banion	Westminster, MD
		Portable wood planing machine	Robert S. Gehret	Hampstead, MD
		Portable wood planing machine	Robert P. Welsh	Gettysburg, PA