Supply apparatus to provide electricity to motor-driven appliances, especially lawn edge trimmers, driven with electric motors

• US 4,392,661 A
• Filed: 09/19/1980
• Issued: 07/12/1983
• Est. Priority Date: 09/22/1979
• Status: Expired due to Term

• Current Assignee: Max Langenstein
• Original Assignee: Max Langenstein
• Inventors: Langenstein, Max
• Primary Examiner(s): Mitchell, David M.
• Assistant Examiner(s): Smith, Milton L.
• Application Number:
  US06/188,732
• Time in Patent Office: 1,026 Days
• Field of Search: 280/12 M, 280/12 L, 280/12 R, 280/18, 280/19, 280/12 S, 280/12 W, 429/100, 429/96, 429/97, 429/99, 429/98, 429/176, 429/163, 224/902, 307/150, 242/85.1, 191/12.2 R, 191/12.4, 339/103 B, 339/119 C, 294/137, 294/172
• US Class Current: 280/28.17
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10S 224/902 Battery carrier

Abstract

An electrical supply apparatus particularly for hand-tools, in the form of a housing having a handle at its upper end and a bottom constituting a skid, the housing having a vertical, longitudinal median plane along which the skid bottom is elongated. An electrical cable can be wound in a recess above this bottom and emerges from an opening below the center of gravity of the apparatus by being connected to the housing by a stress relief. The curvature of the skid is greater in the longitudinal direction than in its transverse direction.

Claims

1. An electrical supply apparatus for hand-tools or the like, comprising:

an upright housing having a downwardly convex bottom elongated in one direction to form a runner extending in said direction, said housing being formed with a handle at its upper end, said housing having an outwardly open annular recess above said runner, said bottom having a greater curvature in a vertical median plane in said direction than transversely to said plane, said housing being formed with an opening in said plane and in said recess at a level not substantially above the center of gravity of the apparatus;

a battery in said housing;

a cable running to said battery extending out of said housing through said opening for connecting the apparatus to a hand-tool or the like, said cable being adapted to be coiled in said recess; and

cable-tension relief means connecting said cable to said housing.

2. The electrical supply apparatus defined in claim 1 wherein said recess is defined between a pair of shoulders formed in said housing and vertically spaced apart thereon, said opening being provided adjacent the lower shoulder.

3. The electrical supply apparatus defined in claim 1 or claim 2 wherein said housing is formed by two identical congruent housing shells joined along said vertical median plane and each defining half of the housing.

4. The electrical supply apparatus defined in claim 3 wherein each of said shells is symmetrical about another vertical median plane perpendicular to the first mentioned plane, said shells being provided with mating tongue and groove formations enabling their interconnection.