Dustpan having interlockable mating grooves and channels to facilitate stacking together at least two dustpans
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47L-013/52
A47L-013/10
출원번호
US-0136011
(2005-05-23)
등록번호
US-7509705
(2009-03-31)
발명자
/ 주소
Morad,Fred I.
Camp,William
출원인 / 주소
Worldwide Integrated Resources, Inc.
대리인 / 주소
Rozsa,Thomas I.
인용정보
피인용 횟수 :
4인용 특허 :
3
초록▼
An improved dustpan having interlockable mating grooves and channels to facilitate stacking together at least two dustpans. The unique feature of the present invention is to form at least one groove in the sidewall of a dustpan, which groove has an interior chamber and an exteriorly projecting bulge
An improved dustpan having interlockable mating grooves and channels to facilitate stacking together at least two dustpans. The unique feature of the present invention is to form at least one groove in the sidewall of a dustpan, which groove has an interior chamber and an exteriorly projecting bulge so that when slid together, the exterior bulge of the upper dustpan slides into the chamber of the groove of the lower dustpan so that they are locked together. In a preferred embodiment, the upper interior wall of the interior chamber and the upper portion of the bulge start at the same downward angle from front to back to facilitate locking two dustpans together.
대표청구항▼
What is claimed is: 1. A dustpan comprising: a. a body having a front, a lower surface having a front lip at its front, a first sidewall, a parallel oppositely disposed second sidewall, a back having a rear wall and an upper member; b. said lower surface having a first elongated channel extending f
What is claimed is: 1. A dustpan comprising: a. a body having a front, a lower surface having a front lip at its front, a first sidewall, a parallel oppositely disposed second sidewall, a back having a rear wall and an upper member; b. said lower surface having a first elongated channel extending from adjacent the front lip toward the rear wall, the first elongated channel extending for a given depth into the lower surface and extending for a given height below the lower surface, and a second elongated channel extending from adjacent the front lip toward the rear wall, the second elongated channel extending for a given depth into the lower surface and extending for a given height below the lower surface, the first and second elongated channels being spaced apart and parallel to each other; c. said first sidewall having a first elongated groove which extends from the front of the sidewall toward the rear wall, and having an upper wall which slants at a downward angle from front to back, the first elongated groove having an interior chamber having a given depth and a bulge which extends laterally and outwardly from the first sidewall by a given height, the vertical height of the interior chamber decreasing from a location adjacent the front to the rear of the interior chamber, the vertical height of the exterior bulge also decreases from the front to the rear by the same amount and extending at the same downward angle as the upper wall of the interior chamber; d. said second sidewall having a second elongated groove which extends from the front of the sidewall toward the rear wall and having an upper wall which slants at a downward angle from front to back, the second elongated groove having an interior chamber having a given depth and a bulge which extends laterally and outwardly from the second sidewall by a given height, the vertical height of the interior chamber decreasing from a location adjacent the front to the rear of the interior chamber, the vertical height of the exterior bulge also decreasing from the front to the rear by the same amount and slanting at the same downward angle as the upper wall of the interior chamber; and e. means for holding and carrying the dustpan; f. whereby, when two dustpans are slid together so that one is above the other, the first and second elongated channels of the upper dustpan interlock with the respectively aligned first and second channels of the lower dustpan by having the portion of the elongated channel below the lower surface of the upper dustpan interlocking with the portion of the elongated channel above the upper surface of the lower dustpan, and the first and second grooves of the upper dustpan interlock with the respectively aligned first and second grooves of the lower dustpan where the bulge of each elongated groove of the upper dustpan interlocks with the respective interior chamber of the elongated grooves of the lower dustpan. 2. A dustpan in accordance with claim 1, wherein the vertical height of the interior chamber of each groove at the location adjacent the front of the dustpan is approximately one and a half times the height at the location of the most interior portion of the chamber and the corresponding height of each exterior bulge at the location adjacent the front of the dustpan is approximately one and a half times the height at the inward most location of each respective bulge. 3. A dustpan in accordance with claim 1, wherein the width of each channel at the location adjacent the front of the dustpan is approximately twice the width of the channel at its inward most location. 4. A dustpan in accordance with claim 1, wherein the depth of each elongated channel decreases from the front of the channel toward the rearmost portion of each channel. 5. A dustpan in accordance with claim 1, wherein said means to hold and carry the dustpan further comprises a horizontal bar connected to a first and second transverse member at either end with the first and second transverse members respectively rotatably connected to the first and second sidewalls, a shaft connected to said transverse bar at one end with a gripping portion at the other end of the shaft. 6. A dustpan in accordance with claim 5, further comprising means to lock the transverse bar to the upper member. 7. A dustpan in accordance with claim 5, further comprising means to lock the transverse bar to the upper member. 8. A dustpan in accordance with claim 5, wherein the body of the dustpan is molded from a single piece of material selected from the group comprising plastic, rubber and polypropylene. 9. A dustpan in accordance with claim 1, wherein the body of the dustpan is molded from a single piece of material selected from the group comprising plastic, rubber and polypropylene. 10. A dustpan comprising: a. a body having a front, a lower surface, a first sidewall, a parallel oppositely disposed second sidewall, a back having a rear wall and an upper member; b. said lower surface having at least one elongated channel extending for a given depth into the lower surface and extending for a given height below the lower surface; c. at least one elongated groove formed into either the first sidewall or the second sidewall and extending from the front, the at least one elongated groove having an interior chamber having a given depth and an upper wall which extends at a downward angle from front to back, and a bulge which extends laterally and outwardly from the sidewall into which the groove is formed by a given height, the vertical height of the interior chamber decreasing from a location adjacent the front to the rear of the chamber, the vertical height of the bulge also decreasing from the front to the rear by the same amount with the upper portion extending at the same downward angle as the upper wall of the chamber; and d. means for holding and carrying the dustpan; e. whereby when two dustpans are slid together so that their respective at least one elongated channel and at least one elongated grooves are aligned, the portion of the elongated channel below the lower surface of the upper dustpan interlocks with the portion of the elongated channel above the upper surface of the lower dustpan and the bulge of the elongated groove of the upper dustpan interlocks with the interior chamber of the elongated groove of the lower dustpan. 11. A dustpan in accordance with claim 10, wherein the vertical height of the interior chamber of the at least one groove at the location adjacent the front of the dustpan is approximately one and a half times the height at the location of the most interior portion of the chamber and the corresponding height of the exterior bulge at the location adjacent the front of the dustpan is approximately one and a half times the height at the inward most location of the bulge. 12. A dustpan in accordance with claim 11, wherein the width of the at least one channel a the location adjacent the front of the dustpan is approximately twice the width of the channel at its inward most location. 13. A dustpan in accordance with claim 11, wherein the depth of each elongated channel decreases from the front of the channel toward the rearmost portion of each channel. 14. A dustpan in accordance with claim 11, wherein said means to hold and carry the dustpan further comprises a horizontal bar connected to a first and second transverse member at either end with the first and second transverse members respectively rotatably connected to the first and second sidewall, a shaft connected to said transverse bar at one end with a gripping portion at the other end of the shaft. 15. A dustpan comprising: a. a body having a front, a lower surface, a first sidewall, a parallel oppositely disposed second sidewall, a rear wall and an upper member; b. said lower surface having at least one elongated channel extending for a given depth into the lower surface and extending for a given height below the lower surface; c. at least one elongated groove formed into either the first sidewall or the second sidewall and extending from the front, the at least one elongated groove having an interior chamber having a given depth, and a bulge which extends laterally and outwardly from the sidewall into which the groove is formed by a given height; and d. means for holding and carrying the dustpan; e. whereby when two dustpans are slid together so that their respective at least one elongated channel and at least one elongated grooves are aligned, the portion of the elongated channel below the lower surface of the upper dustpan interlocks with the portion of the elongated channel above the upper surface of the lower dustpan and the bulge of the elongated groove of the upper dustpan interlocks with the interior chamber of the elongated groove of the lower dustpan. 16. A dustpan in accordance with claim 15, wherein said means to hold and carry the dustpan further comprises a horizontal bar connected to a first and second transverse member at either end with the first and second transverse members respectively rotatably connected to the first and second sidewall, a shaft connected to said transverse bar at one end with a gripping portion at the other end of the shaft. 17. A dustpan comprising: a. a body having a front, a lower surface, a first sidewall, a parallel oppositely disposed second sidewall, a back having a rear wall and an upper member; b. at least one elongated groove formed into either the first sidewall or the second sidewall and extending from the front, the at least one elongated groove having an interior chamber having a given depth and an upper wall which extends at a downward angle from front to back, and a bulge which extends laterally and outwardly from the sidewall into which the groove is formed by a given height, the vertical height of the interior chamber decreasing from a location adjacent the front to the rear of the chamber, the vertical height of the bulge also decreasing from the front to the rear by the same amount with the upper portion extending at the same downward angle as the upper wall of the chamber; and c. means for holding and carrying the dustpan; d. whereby when two dustpans are slid together so that their respective at least one elongated channel and at least one elongated grooves are aligned, the portion of the elongated channel below the lower surface of the upper dustpan interlocks with the portion of the elongated channel above the upper surface of the lower dustpan and the bulge of the elongated groove of the upper dustpan interlocks with the interior chamber of the elongated groove of the lower dustpan. 18. A dustpan in accordance with claim 17, wherein the vertical height of the interior chamber of the at least one groove at the location adjacent the front of the dustpan is approximately one and a half times the height at the location of the most interior portion of the chamber and the corresponding height of the exterior bulge at the location adjacent the front of the dustpan is approximately one and a half times the height at the inward most location of the bulge. 19. A configuration for interlocking two objects comprising: a. each object having a body of a dustpan, each body having a front and at least one sidewall; and b. for each body at least one elongated groove formed into the at least one sidewall and extending from the front, the at least one elongated groove having an interior chamber having a given depth with a bulge which extends laterally and outwardly from the sidewall into which the groove is formed by a given height; c. whereby when two dustpans are slid together so that their respective at least one elongated grooves are aligned, the bulge of the elongated groove of the upper dustpan interlocks with the interior chamber of the elongated groove of the lower dustpan, wherein for each dustpan the vertical height of the interior chamber of the at least one groove at the location adjacent the front of the dustpan is approximately one and one-half times the height at the location of the most interior portion of the chamber and the corresponding height of the exterior bulge at the location adjacent the front of the dustpan is approximately one and a half times the height at the inward most location of the bulge. 20. Two objects in accordance with claim 19, wherein for each dustpan the vertical height of the interior chamber decreases from a location adjacent the front to the rear of the chamber and the vertical height of the bulge also decreases from the front to the rear by the same amount. 21. Two objects in accordance with claim 19, further comprising for each dustpan means for holding and carrying the dustpan. 22. Two objects in accordance with claim 19, wherein for each dustpan the body and the at least one elongated groove are formed from a single piece of material selected from the group comprising plastic, rubber and polypropylene.
O\Neil Robert A. (Glen Ellyn IL) Clouser Leon (Lombard IL) Park Insoon (Chicago IL) Milas Victor (Hanover Park IL), Nestable paint roller tray with multiple features.
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