Compact hoist system

Patent metadata

Field	Value
Publication number	US-11111117-B2
Application number	US-201916253856-A
Country	US
Kind code	B2
Filing date	Jan 22, 2019
Priority date	Dec 21, 2012
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like in a performance environment. The hoist system may be adapted with safety mechanisms including an overload sensor and/or a slack line detector. The system may be provided in the form of a point hoist. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc. Additional features include various cable management systems and trim adjustment mechanisms for use with the hoist system.

First claim

What is claimed is:

1. A hoist system configured to be coupled to a support structure, the hoist system comprising:
a batten including a first end, a second end, and a length extending from the first end to the second end, the batten configured to move relative to the support structure between a raised position and a lowered position;
a motor;
a drum rotatable relative to the batten about a rotational axis by the motor, the rotational axis of the drum extending in a direction along the length of the batten; and
an elongate member wound about the drum, the elongate member configured to be coupled to the support structure,
wherein the batten moves relative to the support structure from the lowered position to the raised position in response to the elongate member winding about the drum, and
wherein both the motor and the drum are coupled to the batten and move from the lowered position to the raised position relative to the support structure along with the batten in response to the elongate member winding about the drum such that:
the motor and the drum are situated at the lowered position with the batten when the batten is in the lowered position, and
the motor and the drum are situated at the raised position with the batten when the batten is in the raised position.

2. The hoist system of claim 1 , wherein the drum moves along the rotational axis relative to the batten in response to rotation of the drum about the rotational axis.

3. The hoist system of claim 1 , wherein the batten includes a hollow member, and wherein the drum is within the hollow member.

4. The hoist system of claim 1 , wherein at least a portion of the motor is positioned outside of the batten.

5. The hoist system of claim 1 , further comprising a securing member configured to be coupled to the support structure, wherein the elongate member is coupled to the support structure via the securing member.

6. The hoist system of claim 5 , wherein the elongate member is a single elongate member coupled to the securing member and the drum.

7. The hoist system of claim 1 , wherein the motor includes a drive shaft coupled to the drum, wherein the drive shaft includes a drive shaft axis about which the drive shaft rotates, and wherein the drive shaft axis extends in the direction along the length of the batten.

8. The hoist system of claim 7 , wherein the drive shaft axis is coaxial with the rotational axis of the drum.

9. The hoist system of claim 1 , wherein the elongate member is one of a plurality of elongate members wound about the drum, and wherein the plurality of elongate members are configured to be coupled to the support structure.

10. The hoist system of claim 9 , further comprising a securing member configured to be coupled to the support structure, wherein an end of the one of the plurality of elongate members is fixed to the securing member, and wherein an end of the other one of the plurality of elongate members is fixed to the securing member.

11. The hoist system of claim 1 , wherein the motor is selectively removable from the batten.

12. The hoist system of claim 11 , wherein the motor is a first motor, and wherein a second motor different than the first motor is selectively coupled to the batten.

13. The hoist system of claim 12 , wherein a first drive shaft of the first motor is in line with the length of the batten while the first motor is coupled to the batten, and wherein a second drive shaft of the second motor is in line with the length of the batten while the second motor is coupled to the batten.

14. The hoist system of claim 1 , further comprising an adjustment mechanism including a bracket coupled to the batten, wherein the bracket supports a shaft in which the elongate member is wrapped around, and wherein rotational movement of the shaft relative to the bracket is configured to adjust a length of the elongate member between the batten and the support structure.

15. The hoist system of claim 14 , wherein the adjustment mechanism includes a cog coupled to the shaft for movement therewith and a latch coupled to the bracket, and wherein the latch engages the cog to inhibit movement of the shaft in a rotational direction.

16. The hoist system of claim 15 , wherein the latch is biased into engagement with the cog.

17. The hoist system of claim 1 , further comprising an adjustment mechanism including a bracket configured to be coupled to the support structure, wherein the bracket supports a shaft in which the elongate member is wrapped around, and wherein rotational movement of the shaft relative to the bracket is configured to adjust a length of the elongate member between the batten and the support structure.

18. The hoist system of claim 17 , wherein the adjustment mechanism includes a cog coupled to the shaft for movement therewith and a latch coupled to the bracket, and wherein the latch engages the cog to inhibit movement of the shaft in a rotational direction.

19. A hoist system configured to be coupled to a support structure, the hoist system comprising:
a mount configured to be selectively coupled to the support structure;
a motor;
a drum coupled to the mount, the drum rotatable relative to the mount about a rotational axis by the motor;
an elongate member wound about the drum, the elongate member configured to move an article from a lowered position to a raised position in response to the elongate member winding about the drum; and
an enclosure coupled to the mount, the enclosure at least partially enclosing the drum;
wherein a portion of the drum extends beyond the enclosure when the drum is in a first position relative to the enclosure, and wherein the drum axially moves relative to the enclosure while the drum moves from the first position to a second position.

20. The hoist system of claim 19 , wherein the motor moves with the drum while the drum moves from the first position to the second position.

Assignees

• Electronic Theatre Controls Inc

Inventors

• Hoffend Jr Donald Aloysius
• Hoffend Iii Donald Aloysius

Classifications

• B66D1/28 Primary

  Other constructional details · CPC title

• B66D1/54

  Safety gear · CPC title

• B66D1/26

  having several drums or barrels · CPC title

• F16G11/105

  Clamps holding in one direction only · CPC title

• F16G11/048

  by moving a surface into the cable · CPC title