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 Title: |
US4164801:
Bear claw ice scraper
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Thomas, Robert R.; Hartford, KS
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| Assignee: |
Hopkins Manufacturing Corporation, Emporia, KS
other patents from HOPKINS MANUFACTURING CORPORATION (257085) (approx. 63)
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| Published / Filed: |
1979-08-21
/ 1977-11-02
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| Application Number: |
US1977000847742
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| IPC Code: |
Advanced:
A47L 13/08;
B60S 3/04;
Core:
A47L 13/02;
more...
IPC-7:
A47L 17/06;
B60S 1/04;
E01H 5/02;
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| ECLA Code: |
A47L13/08; B60S3/04D;
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| U.S. Class: |
Current:
015/236.02;
015/236.08;
030/172;
Original:
015/236.R;
030/172;
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| Field of Search: |
015/210.5,236 R,104 S,235.6
030/169,172,164.5,164.8
037/053
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| Priority Number: |
| 1977-11-02 |
US1977000847742 |
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| Abstract: |
An ice scraper comprising a one-piece body defining a handle section, a downwardly curved intermediate section, and a blade region comprising a plurality of downwardly curved, independently flexible, resilient scraping fingers. In use, the scraping fingers bow or flex when scraping force is applied to ice to be removed, induce the formation of fractures in the ice, and thereafter resiliently return to their unflexed position, imparting force to fractured ice tending to throw it away from the surface to be scraped.
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| Attorney, Agent or Firm: |
Kenway & Jenney ;
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| Primary / Asst. Examiners: |
Blum, Daniel;
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 4 claims |
I claim:
1. A hand-held scraper for removing ice from a smooth surface, said scraper comprising a one piece body defining;
- a handle section;
- an intermediate section extending from said handle section; and
- a blade region comprising a plurality of concave, resilient, independently flexible, scraping fingers, each extending from said intermediate section and terminating in a scraping edge,
- each said flexible scraping finger comprising
- flexible chisel means, terminating in a said scraping edge, and operable to engage an ice covered surface with an ice deflecting surface thereof being inclined at an obtuse angle in relation to a portion of said surface to be scraped,
- flexible curved beam means connected with said intermediate section, and
- concave joint means located spaced from said surface and interconnecting said flexible curved beam means and said chisel means, with said flexible chisel means being inclined in a forward facing, scraping direction,
- said joint means being operable to permit generally independent flexing of said flexible chisel means and said flexible, curved beam means on opposite ends of said joint means; and
- said flexible chisel means having an overall wedge shaped configuration inclined at an obtuse angle in relation to a portion of said surface to be scraped and having a median thickness less than the median thickness of said flexible, curved beam means;
- said scraping fingers being operable, when a user gripping the handle section applies forces generally longitudinally of an ice covered surface to be scraped,
- to independently flex so that said scraping, edges are operable to become independently wedged in ice to be scraped and ice fracturing energy is stored in said flexible, curved beam means,
- to exert force against the ice resulting from energy imparted to said handle by said user and said stored energy, said force being sufficient to cause fracturing of said ice, and
- to resiliently return to their original shape and therefore facilitate displacing of fractured ice away from the surface to be scraped; and
- at least some of said scraping fingers each having and end, merging with said intermediate section, and having a width, measured transversely of said direction of applied force and across said ice covered surface, which is less than the width of the scraping edge thereof, each such scraping finger being defined by
- lateral edges which converge longitudinally of said direction of applied force and away from the scraping edge thereof;
- said fingers alternating transversely of said blade region with groove means, with
- said blade region including a plurality of said groove means, and
- said plurality of said groove means being generally mutually converging in a direction extending generally longitudinally of said scraper and away from said scraping edge; and
- said scraping fingers including central stabilizing finger means located generally centrally of said blade region and operable to tend to stabilize said blade region in a generally uniform scraping position with said flexible scraping fingers being generally uniformly inclined relative to said surface to be scraped.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 21 U.S. patent(s) that reference this one
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