Modular ramp system

• US 5,446,937 A
• Filed: 09/08/1992
• Issued: 09/05/1995
• Est. Priority Date: 09/08/1992
• Status: Expired due to Fees

• Current Assignee: Pemko Manufacturing Co.
• Original Assignee: Pemko Manufacturing Co.
• Inventors: Haskins, Craig A.
• Primary Examiner(s): Britts, Ramon S.
• Assistant Examiner(s): LISEHORA, JAMES
• Application Number:
  US07/941,743
• Time in Patent Office: 1,092 Days
• Field of Search: 14/69.5, 14/71.1, 254/88, 193/38, 193/41, 52/588, 52/630, 52/177, 52/581, 404/35, 404/41, 446/128, 446/444, 472/116, 472/117
• US Class Current: 14/69.5
• CPC Class Codes: B65G 69/287 Constructional features of deck or surround
• CPC Class Codes: B65G 69/30 Non-permanently installed loading ramps, e.g. transportable
• CPC Class Codes: E04F 11/002 Ramps
• CPC Class Codes: E04F 2011/005 collapsible, e.g. folding, telescopic

Abstract

A modular ramp system for use with a threshold which has an offset. The modular ramp system includes a number of elements which may be arranged in various combinations in order to conform to offsets of varying height.

Claims

1. A modular ramp kit having components capable of being assembled by mating first interengageable attachment members with complementarily shaped second interengageable attachment members, said components for use in conjunction with a threshold defining an offset, the kit comprising the combination of:

a top plate for covering a top portion of the threshold, said top plate including one of said first interengageable attachment members,

a first ramp, the first ramp defining an upper end having a height A and lower end having a lesser height B, the upper end of the first ramp including one of said second interengageable attachment members for attachment to the top plate, said lower end of said first ramp including one of said first interengageable attachment members,

a second ramp, the second ramp defining an upper end having said height B and a lower end having a lesser height C, the upper end of the second ramp including one of said second interengageable attachment members for attachment to the lower end of the first ramp, said lower end of the second ramp including one of said first interengageable attachment members,

a third ramp, the third ramp defining an upper end having said height C and a lower end, the upper end of the third ramp including one of said second interengageable attachment members for attachment to the lower end of the second ramp, and

two skirts each adapted to be placed adjacent a respective side of at least the third ramp, each skirt defining a surface extending downwardly from the third ramp to a ground surface upon which the modular ramp is placed, each skirt and one of the ramps having mutually engageable attachment surfaces for securing each skirt to the third ramp.

2. The modular ramp kit of claim 1, wherein each skirt includes a tab defining one of the attachment surfaces and adapted to be placed under the third ramp and position the skirt relative the to third ramp.

3. A modular ramp kit as defined in claim 1 wherein each of said interengageable attachment members comprises a hook having a substantially curved free end formed to permit said first and second interengageable attachment members to be readily disassembled from one another.

4. A modular ramp kit as defined in claim 3 wherein said curved free end of each of said first interengageable attachment members extends upwardly and said curved free end of each of said second interengageable attachment members extends downwardly.