Hatch-operating tool for pneumatic tank trailers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E05B-001/00
B25G-001/04
B66F-019/00
B66F-015/00
출원번호
US-0869157
(2015-09-29)
등록번호
US-9752348
(2017-09-05)
발명자
/ 주소
Leach, Gregory R.
Malle, Sr., Robert R.
출원인 / 주소
TERESA RUSTIN REED, INC.
대리인 / 주소
Gardner Groff Greenwald & Villanueva, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
10
초록▼
A tool for operating pivotal levers includes a lever member having an attachment and a handle. The attachment defines proximal-lower and distal-upper bearing surfaces for contacting the pivotal lever to transmit a pivotal opening force, and the proximal-upper and distal-lower bearing surfaces for co
A tool for operating pivotal levers includes a lever member having an attachment and a handle. The attachment defines proximal-lower and distal-upper bearing surfaces for contacting the pivotal lever to transmit a pivotal opening force, and the proximal-upper and distal-lower bearing surfaces for contacting the pivotal lever to transmit a pivotal closing force. Typically, the tool includes hook retainers extending from the lever member that define the lower bearing surfaces. Also, the lower bearing surfaces and the handle define a clearance angle to avoid interference with an opposite lever. Typically, the lever member includes an angle between its attachment section and its handle section to define the clearance angle. Methods of installation and use of such a tool are also disclosed.
대표청구항▼
1. A tool for operating a first pivotal lever of a hatch of a pneumatic tank trailer, the hatch having a second pivotal lever opposite and aligned with the first pivotal lever, the tool comprising: a lever member having a proximal handle section, a distal attachment section, and an intermediate exte
1. A tool for operating a first pivotal lever of a hatch of a pneumatic tank trailer, the hatch having a second pivotal lever opposite and aligned with the first pivotal lever, the tool comprising: a lever member having a proximal handle section, a distal attachment section, and an intermediate extension section therebetween, wherein the handle section is adapted for manual grasping, and wherein the extension section separates the handle and attachment sections to provide mechanical advantage; andan attachment on the attachment section of the lever member, wherein in a use position the attachment longitudinally aligns and overlaps with the pivotal lever, the attachment includes proximal-lower and distal-upper bearing surfaces that contact the pivotal lever to transmit a pivotal opening force in an upward angular opening direction, and the attachment includes proximal-upper and distal-lower bearing surfaces that contact the pivotal lever to transmit a pivotal closing force in a downward angular closing direction that is opposite to the opening direction, wherein the attachment includes a proximal retainer and a distal retainer, the proximal retainer extending from the lever member and defining the proximal-lower bearing surface, the distal retainer extending from the lever member and defining the distal-lower bearing surface, the proximal-lower bearing surface and the distal-upper bearing surface being spaced apart by a longitudinal spacing, the proximal-lower bearing surface positioned opposite the proximal-upper bearing surface and the distal-upper bearing surface positioned opposite the distal-lower bearing surface, wherein the proximal and distal retainers each form a respective receptacle and a respective side access opening, wherein each of the retainer receptacles receives the pivotal lever though the respective side access opening, the proximal and distal retainers are oppositely arranged with their respective side access openings on opposite sides of the lever member, and the proximal and distal retainers are longitudinally spaced to define a mounting opening between them, wherein, for mounting, the tool is positioned at an angle to the pivotal lever then lowered until the pivotal lever is received in the mounting opening between the proximal and distal retainers, then rotated until the pivotal lever is received through the oppositely arranged side access openings and positioned in the respective receptacles in the use, and wherein the extension section of the lever member extends proximally from a proximal end of the attachment section of the lever member, the lever member defines a clearance angle relative to the proximal-lower and distal-lower bearing surfaces, the clearance angle is formed in the lever member between and defining the attachment and extension sections the clearance angle is located adjacent and proximal the proximal end of the proximal retainer, and the clearance angle is about 5 degrees to about 20 degrees to provide clearance of and avoid interference between the tool and the opposite second pivotal lever when the tool is mounted onto the first pivotal lever for use while still providing leverage to the distal and proximal retainers by applying the pivotal opening and closing forces to the handle section. 2. The pneumatic tank trailer hatch tool of claim 1, wherein the clearance angle is formed between a centerline of the extension section of the lever member and a longitudinal line defined by the proximal-lower and distal-lower bearing surfaces. 3. The pneumatic tank trailer hatch tool of claim 1, wherein the longitudinal spacing is short enough that in the use position the proximal-lower and distal-upper bearing surfaces maintain bearing contact with the lever member but long enough to provide a mechanical advantage during use. 4. The pneumatic tank trailer hatch tool of claim 1, wherein the proximal retainer includes an extension arm that extends downward from the lever member and a holder arm that extends at an angle from the extension arm to define the proximal-lower bearing surface facing the lever member and at an offset spacing therefrom. 5. The pneumatic tank trailer hatch tool of claim 1, wherein the proximal-upper bearing surface, the distal-upper bearing surface, or both, is or are defined by the lever member. 6. The pneumatic tank trailer hatch tool of claim 4, wherein the proximal retainer extension and holder arms cooperate with the lever member to define the respective receptacle that receives the pivotal lever and the respective side access opening through which the pivotal lever is received into the receptacle. 7. The pneumatic tank trailer hatch tool of claim 1, wherein the distal retainer includes an extension arm that extends downward from the lever member and a holder arm that extends at an angle from the extension arm to define the distal-lower bearing surface facing the lever member and at an offset spacing therefrom. 8. The pneumatic tank trailer hatch tool of claim 7, wherein the distal retainer extension and holder arms cooperate with the lever member to define the respective receptacle that receives the pivotal lever and the respective side access opening through which the pivotal lever is received into the receptacle. 9. The pneumatic tank trailer hatch tool of claim 1, wherein the proximal and distal retainers are each in form of a respective hook. 10. A method of operating the first pivotal lever of the hatch of the pneumatic tank trailer using the pneumatic tank trailer hatch tool of claim 1, comprising: mounting the tool onto the pivotal lever;applying a pivotal force to the tool handle to transmit the pivotal force through the tool and to the pivotal lever, without interference with the opposite and aligned second pivotal lever, to pivot the first pivotal lever in the upward angular opening direction; andremoving the tool from the pivotal lever in an axial direction by automatic disengagement caused by the pivotal lever accelerating after a cam peak of the pivotal lever is passed.
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이 특허에 인용된 특허 (10)
Chong Ian M. ; Miller Randolph F. ; Johnson Jeffrey B., Apparatus for removal of vault lids and other heavy covers.
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