Hand lifting device and projection apparatus using the same

Patent metadata

Field	Value
Publication number	US-11565914-B2
Application number	US-201916708279-A
Country	US
Kind code	B2
Filing date	Dec 9, 2019
Priority date	Dec 14, 2018
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A hand lifting device and a projection apparatus are provided. The hand lifting device is adapted to carry an object, and includes a support pad and a carrying strap. The support pad has a first surface and a second surface opposite to each other, and has two first connecting portions. The carrying strap has two end portions, and the two end portions respectively have a second connecting portion. The carrying strap is configured to partially surround the object, such that the second connecting portions of the carrying strap are respectively detachably connected to the first connecting portions of the support pad. The projection apparatus comprises the above hand lifting device and a projector.

First claim

What is claimed is:

1. A hand lifting device, adapted to carry an object, the hand lifting device comprising:
a support pad, having a first surface and a second surface opposite to each other, and the support pad comprising two first connecting portions, wherein when the support pad is fixed to the object, the first surface of the support pad faces the object, and the first connecting portions are disposed on the second surface of the support pad; and
a carrying strap, having two end portions, wherein the two end portions respectively comprise a second connecting portion, and the carrying strap is configured to at least partially surround the object, such that the second connecting portions of the two end portions of the carrying strap are respectively detachably connected to the first connecting portions of the support pad,
wherein the object comprises a plurality of footstands, the support pad comprises a plurality of fixing holes, and the plurality of footstands penetrate through the fixing holes of the support pad and the plurality of footstands are detachably fixed to the object, such that the first surface of the support pad is between the object and the second surface of the support pad, and a space is formed between the first surface of the support pad and the object.

2. The hand lifting device of claim 1 , wherein the carrying strap comprises a carrying strap main body located between the two end portions, the carrying strap main body is configured to surround the object to fix the object, and when the second connecting portions are connected to the first connecting portions of the support pad, the carrying strap main body is configured to lift the object.

3. The hand lifting device of claim 1 , wherein the carrying strap comprises a carrying strap main body located between the two end portions and a carrying handle fixedly connected to the carrying strap main body, and a gap is formed between the carrying handle and the carrying strap main body.

4. The hand lifting device of claim 3 , wherein two ends of the carrying handle are sewed with the carrying strap main body, or the carrying handle and the carrying strap main body are formed integrally.

5. The hand lifting device of claim 1 , wherein the support pad comprises a first side edge, a second side edge and an opening between the first side edge and the second side edge, one of the first connecting portions is located on the second surface and between the first side edge and the opening, and the other one of the first connecting portions is located on the second surface and between the opening and the second side edge, and
wherein the two end portions of the carrying strap respectively from the first side edge and the second side edge of the support pad penetrate through the space between the support pad and the object, exit from the opening, and are respectively fixed to the first connecting portions of the support pad after being reversely folded.

6. The hand lifting device of claim 5 , wherein the support pad further comprises two recess portions located at a periphery of the opening, and
wherein the two end portions of the carrying strap respectively exit from the opening along the recess portions, such that at least a part of the carrying strap is located in the recess portions.

7. The hand lifting device of claim 1 , wherein the first connecting portions and the second connecting portions are Velcro tapes.

8. The hand lifting device of claim 1 , wherein the support pad further comprises a plurality of heat dissipating holes aligned with a cooling portion of the object.

9. A hand lifting device, adapted to carry an object, the hand lifting device comprising:
a support pad, having a first surface and a second surface opposite to each other, and the support pad comprising two first connecting portions, wherein when the support pad is fixed to the object, the first surface of the support pad faces the object, and the first connecting portions are disposed on the second surface of the support pad; and
a carrying strap, having two end portions, wherein the two end portions respectively comprise a second connecting portion, and the carrying strap is configured to at least partially surround the object, such that the second connecting portions of the two end portions of the carrying strap are respectively detachably connected to the first connecting portions of the support pad,
wherein the carrying strap further comprises a plurality of heat dissipating holes for cooling the object.

10. A projection apparatus, comprising:
a projector, having a bottom surface; and
a hand lifting device, configured to carry the projector, and the hand lifting device comprising:
a support pad, having a first surface and a second surface opposite to each other, and the support pad comprising two first connecting portions, wherein when the support pad is fixed to the projector, the first surface of the support pad faces the bottom surface of the projector, and the first connecting portions are disposed on the second surface of the support pad; and

a carrying strap, having two end portions, wherein the two end portions respectively comprise a second connecting portion, and the carrying strap is configured to at least partially surround the projector, such that the second connecting portions of the two end portions of the carrying strap are respectively detachably connected to the first connecting portions of the support pad,
wherein the projector comprises a plurality of footstands, the support pad comprises a plurality of fixing holes, and the plurality of footstands penetrate through the fixing holes of the support pad and the plurality of footstands are detachably fixed to the projector, such that the first surface of the support pad is between the bottom surface of the projector and the second surface of the support pad, and a space is formed between the first surface of the support pad and the bottom surface of the projector.

11. The projection apparatus of claim 10 , wherein the carrying strap comprises a carrying strap main body located between the two end portions, the carrying strap main body is configured to surround the projector to fix the projector, and when the second connecting portions are connected to the first connecting portions of the support pad, the carrying strap main body is configured to lift the projector.

12. The projection apparatus of claim 10 , wherein the carrying strap comprises a carrying strap main body located between the two end portions and a carrying handle fixedly connected to the carrying strap main body, and a gap is formed between the carrying handle and the carrying strap main body.

13. The projection apparatus of claim 12 , wherein two ends of the carrying handle are sewed with the carrying strap main body, or the carrying handle and the carrying strap main body are formed integrally.

14. The projection apparatus of claim 10 , wherein the support pad comprises a first side edge, a second side edge and an opening between the first side edge and the second side edge, one of the first connecting portions is located on the second surface and between the first side edge and the opening, and the other one of the first connecting portions is located on the second surface and between the opening and the second side edge, and
wherein the two end portions of the carrying strap respectively from the first side edge and the second side edge of the support pad penetrate through the space between the support pad and the projector, exit from the opening, and are respectively fixed to the first connecting portions of the support pad after being reversely folded.

Assignees

• Coretronic Corp

Inventors

• Li Chang-Ching
• Hsieh Ning

Classifications

• B66C1/18

  Band-type slings · CPC title

• H04N9/3144

  Cooling systems (cooling of liquid crystal cells in general G02F1/133382; cooling of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/16) · CPC title

• B66C1/16 Primary

  Slings with load-engaging platforms or frameworks · CPC title

• H04N9/3173 Primary

  wherein the projection device is specially adapted for enhanced portability · CPC title

• A45F2200/05

  Human Necessities · mapped topic